Vulnerabilities > CVE-2015-8779 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
Stack-based buffer overflow in the catopen function in the GNU C Library (aka glibc or libc6) before 2.23 allows context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a long catalog name.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Buffer Overflow via Environment Variables This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
- Overflow Buffers Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
- Client-side Injection-induced Buffer Overflow This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
- Filter Failure through Buffer Overflow In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
- MIME Conversion An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
Nessus
NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2017-1916.NASL description An update for glibc is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. Security Fix(es) : * A stack overflow vulnerability was found in nan* functions that could cause applications, which process long strings with the nan function, to crash or, potentially, execute arbitrary code. (CVE-2014-9761) * It was found that out-of-range time values passed to the strftime() function could result in an out-of-bounds memory access. This could lead to application crash or, potentially, information disclosure. (CVE-2015-8776) * An integer overflow vulnerability was found in hcreate() and hcreate_r() functions which could result in an out-of-bounds memory access. This could lead to application crash or, potentially, arbitrary code execution. (CVE-2015-8778) * A stack based buffer overflow vulnerability was found in the catopen() function. An excessively long string passed to the function could cause it to crash or, potentially, execute arbitrary code. (CVE-2015-8779) * It was found that the dynamic loader did not sanitize the LD_POINTER_GUARD environment variable. An attacker could use this flaw to bypass the pointer guarding protection on set-user-ID or set-group-ID programs to execute arbitrary code with the permissions of the user running the application. (CVE-2015-8777) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.4 Release Notes linked from the References section. last seen 2020-06-01 modified 2020-06-02 plugin id 102149 published 2017-08-03 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102149 title RHEL 7 : glibc (RHSA-2017:1916) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Red Hat Security Advisory RHSA-2017:1916. The text # itself is copyright (C) Red Hat, Inc. # include("compat.inc"); if (description) { script_id(102149); script_version("3.11"); script_cvs_date("Date: 2019/10/24 15:35:43"); script_cve_id("CVE-2014-9761", "CVE-2015-8776", "CVE-2015-8777", "CVE-2015-8778", "CVE-2015-8779"); script_xref(name:"RHSA", value:"2017:1916"); script_name(english:"RHEL 7 : glibc (RHSA-2017:1916)"); script_summary(english:"Checks the rpm output for the updated packages"); script_set_attribute( attribute:"synopsis", value:"The remote Red Hat host is missing one or more security updates." ); script_set_attribute( attribute:"description", value: "An update for glibc is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. Security Fix(es) : * A stack overflow vulnerability was found in nan* functions that could cause applications, which process long strings with the nan function, to crash or, potentially, execute arbitrary code. (CVE-2014-9761) * It was found that out-of-range time values passed to the strftime() function could result in an out-of-bounds memory access. This could lead to application crash or, potentially, information disclosure. (CVE-2015-8776) * An integer overflow vulnerability was found in hcreate() and hcreate_r() functions which could result in an out-of-bounds memory access. This could lead to application crash or, potentially, arbitrary code execution. (CVE-2015-8778) * A stack based buffer overflow vulnerability was found in the catopen() function. An excessively long string passed to the function could cause it to crash or, potentially, execute arbitrary code. (CVE-2015-8779) * It was found that the dynamic loader did not sanitize the LD_POINTER_GUARD environment variable. An attacker could use this flaw to bypass the pointer guarding protection on set-user-ID or set-group-ID programs to execute arbitrary code with the permissions of the user running the application. (CVE-2015-8777) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.4 Release Notes linked from the References section." ); # https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/ script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?3395ff0b" ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2017:1916" ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2014-9761" ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2015-8776" ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2015-8777" ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2015-8778" ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2015-8779" ); script_set_attribute(attribute:"solution", value:"Update the affected packages."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc-common"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc-debuginfo-common"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc-devel"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc-headers"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc-static"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc-utils"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:nscd"); script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7"); script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.4"); script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.5"); script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.6"); script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.7"); script_set_attribute(attribute:"vuln_publication_date", value:"2016/01/20"); script_set_attribute(attribute:"patch_publication_date", value:"2017/08/01"); script_set_attribute(attribute:"plugin_publication_date", value:"2017/08/03"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Red Hat Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("misc_func.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/RedHat/release"); if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat"); os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat"); os_ver = os_ver[1]; if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 7.x", "Red Hat " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu); yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo"); if (!empty_or_null(yum_updateinfo)) { rhsa = "RHSA-2017:1916"; yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa); if (!empty_or_null(yum_report)) { security_report_v4( port : 0, severity : SECURITY_HOLE, extra : yum_report ); exit(0); } else { audit_message = "affected by Red Hat security advisory " + rhsa; audit(AUDIT_OS_NOT, audit_message); } } else { flag = 0; if (rpm_check(release:"RHEL7", reference:"glibc-2.17-196.el7")) flag++; if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"glibc-common-2.17-196.el7")) flag++; if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"glibc-common-2.17-196.el7")) flag++; if (rpm_check(release:"RHEL7", reference:"glibc-debuginfo-2.17-196.el7")) flag++; if (rpm_check(release:"RHEL7", reference:"glibc-debuginfo-common-2.17-196.el7")) flag++; if (rpm_check(release:"RHEL7", reference:"glibc-devel-2.17-196.el7")) flag++; if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"glibc-headers-2.17-196.el7")) flag++; if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"glibc-headers-2.17-196.el7")) flag++; if (rpm_check(release:"RHEL7", reference:"glibc-static-2.17-196.el7")) flag++; if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"glibc-utils-2.17-196.el7")) flag++; if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"glibc-utils-2.17-196.el7")) flag++; if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"nscd-2.17-196.el7")) flag++; if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"nscd-2.17-196.el7")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_HOLE, extra : rpm_report_get() + redhat_report_package_caveat() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "glibc / glibc-common / glibc-debuginfo / glibc-debuginfo-common / etc"); } }NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2017-0680.NASL description An update for glibc is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. Security Fix(es) : * A stack overflow vulnerability was found in nan* functions that could cause applications, which process long strings with the nan function, to crash or, potentially, execute arbitrary code. (CVE-2014-9761) * It was found that out-of-range time values passed to the strftime() function could result in an out-of-bounds memory access. This could lead to application crash or, potentially, information disclosure. (CVE-2015-8776) * An integer overflow vulnerability was found in hcreate() and hcreate_r() functions which could result in an out-of-bounds memory access. This could lead to application crash or, potentially, arbitrary code execution. (CVE-2015-8778) * A stack based buffer overflow vulnerability was found in the catopen() function. An excessively long string passed to the function could cause it to crash or, potentially, execute arbitrary code. (CVE-2015-8779) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.9 Release Notes and Red Hat Enterprise Linux 6.9 Technical Notes linked from the References section. last seen 2020-06-01 modified 2020-06-02 plugin id 97881 published 2017-03-22 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/97881 title RHEL 6 : glibc (RHSA-2017:0680) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Red Hat Security Advisory RHSA-2017:0680. The text # itself is copyright (C) Red Hat, Inc. # include("compat.inc"); if (description) { script_id(97881); script_version("3.9"); script_cvs_date("Date: 2019/10/24 15:35:42"); script_cve_id("CVE-2014-9761", "CVE-2015-8776", "CVE-2015-8778", "CVE-2015-8779"); script_xref(name:"RHSA", value:"2017:0680"); script_name(english:"RHEL 6 : glibc (RHSA-2017:0680)"); script_summary(english:"Checks the rpm output for the updated packages"); script_set_attribute( attribute:"synopsis", value:"The remote Red Hat host is missing one or more security updates." ); script_set_attribute( attribute:"description", value: "An update for glibc is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. Security Fix(es) : * A stack overflow vulnerability was found in nan* functions that could cause applications, which process long strings with the nan function, to crash or, potentially, execute arbitrary code. (CVE-2014-9761) * It was found that out-of-range time values passed to the strftime() function could result in an out-of-bounds memory access. This could lead to application crash or, potentially, information disclosure. (CVE-2015-8776) * An integer overflow vulnerability was found in hcreate() and hcreate_r() functions which could result in an out-of-bounds memory access. This could lead to application crash or, potentially, arbitrary code execution. (CVE-2015-8778) * A stack based buffer overflow vulnerability was found in the catopen() function. An excessively long string passed to the function could cause it to crash or, potentially, execute arbitrary code. (CVE-2015-8779) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.9 Release Notes and Red Hat Enterprise Linux 6.9 Technical Notes linked from the References section." ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2017:0680" ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2014-9761" ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2015-8776" ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2015-8778" ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2015-8779" ); script_set_attribute(attribute:"solution", value:"Update the affected packages."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc-common"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc-debuginfo-common"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc-devel"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc-headers"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc-static"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc-utils"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:nscd"); script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6"); script_set_attribute(attribute:"vuln_publication_date", value:"2016/04/19"); script_set_attribute(attribute:"patch_publication_date", value:"2017/03/21"); script_set_attribute(attribute:"plugin_publication_date", value:"2017/03/22"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Red Hat Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("misc_func.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/RedHat/release"); if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat"); os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat"); os_ver = os_ver[1]; if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 6.x", "Red Hat " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu); yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo"); if (!empty_or_null(yum_updateinfo)) { rhsa = "RHSA-2017:0680"; yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa); if (!empty_or_null(yum_report)) { security_report_v4( port : 0, severity : SECURITY_HOLE, extra : yum_report ); exit(0); } else { audit_message = "affected by Red Hat security advisory " + rhsa; audit(AUDIT_OS_NOT, audit_message); } } else { flag = 0; if (rpm_check(release:"RHEL6", reference:"glibc-2.12-1.209.el6")) flag++; if (rpm_check(release:"RHEL6", cpu:"i686", reference:"glibc-common-2.12-1.209.el6")) flag++; if (rpm_check(release:"RHEL6", cpu:"s390x", reference:"glibc-common-2.12-1.209.el6")) flag++; if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"glibc-common-2.12-1.209.el6")) flag++; if (rpm_check(release:"RHEL6", reference:"glibc-debuginfo-2.12-1.209.el6")) flag++; if (rpm_check(release:"RHEL6", reference:"glibc-debuginfo-common-2.12-1.209.el6")) flag++; if (rpm_check(release:"RHEL6", reference:"glibc-devel-2.12-1.209.el6")) flag++; if (rpm_check(release:"RHEL6", cpu:"i686", reference:"glibc-headers-2.12-1.209.el6")) flag++; if (rpm_check(release:"RHEL6", cpu:"s390x", reference:"glibc-headers-2.12-1.209.el6")) flag++; if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"glibc-headers-2.12-1.209.el6")) flag++; if (rpm_check(release:"RHEL6", reference:"glibc-static-2.12-1.209.el6")) flag++; if (rpm_check(release:"RHEL6", cpu:"i686", reference:"glibc-utils-2.12-1.209.el6")) flag++; if (rpm_check(release:"RHEL6", cpu:"s390x", reference:"glibc-utils-2.12-1.209.el6")) flag++; if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"glibc-utils-2.12-1.209.el6")) flag++; if (rpm_check(release:"RHEL6", cpu:"i686", reference:"nscd-2.12-1.209.el6")) flag++; if (rpm_check(release:"RHEL6", cpu:"s390x", reference:"nscd-2.12-1.209.el6")) flag++; if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"nscd-2.12-1.209.el6")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_HOLE, extra : rpm_report_get() + redhat_report_package_caveat() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "glibc / glibc-common / glibc-debuginfo / glibc-debuginfo-common / etc"); } }NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-2985-2.NASL description USN-2985-1 fixed vulnerabilities in the GNU C Library. The fix for CVE-2014-9761 introduced a regression which affected applications that use the libm library but were not fully restarted after the upgrade. This update removes the fix for CVE-2014-9761 and a future update will be provided to address this issue. We apologize for the inconvenience. Martin Carpenter discovered that pt_chown in the GNU C Library did not properly check permissions for tty files. A local attacker could use this to gain administrative privileges or expose sensitive information. (CVE-2013-2207, CVE-2016-2856) Robin Hack discovered that the Name Service Switch (NSS) implementation in the GNU C Library did not properly manage its file descriptors. An attacker could use this to cause a denial of service (infinite loop). (CVE-2014-8121) Joseph Myers discovered that the GNU C Library did not properly handle long arguments to functions returning a representation of Not a Number (NaN). An attacker could use this to cause a denial of service (stack exhaustion leading to an application crash) or possibly execute arbitrary code. (CVE-2014-9761) Arjun Shankar discovered that in certain situations the nss_dns code in the GNU C Library did not properly account buffer sizes when passed an unaligned buffer. An attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2015-1781) Sumit Bose and Lukas Slebodnik discovered that the Name Service Switch (NSS) implementation in the GNU C Library did not handle long lines in the files databases correctly. A local attacker could use this to cause a denial of service (application crash) or possibly execute arbitrary code. (CVE-2015-5277) Adam Nielsen discovered that the strftime function in the GNU C Library did not properly handle out-of-range argument data. An attacker could use this to cause a denial of service (application crash) or possibly expose sensitive information. (CVE-2015-8776) Hector Marco and Ismael Ripoll discovered that the GNU C Library allowed the pointer-guarding protection mechanism to be disabled by honoring the LD_POINTER_GUARD environment variable across privilege boundaries. A local attacker could use this to exploit an existing vulnerability more easily. (CVE-2015-8777) Szabolcs Nagy discovered that the hcreate functions in the GNU C Library did not properly check its size argument, leading to an integer overflow. An attacker could use to cause a denial of service (application crash) or possibly execute arbitrary code. (CVE-2015-8778) Maksymilian Arciemowicz discovered a stack-based buffer overflow in the catopen function in the GNU C Library when handling long catalog names. An attacker could use this to cause a denial of service (application crash) or possibly execute arbitrary code. (CVE-2015-8779) Florian Weimer discovered that the getnetbyname implementation in the GNU C Library did not properly handle long names passed as arguments. An attacker could use to cause a denial of service (stack exhaustion leading to an application crash). (CVE-2016-3075). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 91341 published 2016-05-27 reporter Ubuntu Security Notice (C) 2016-2019 Canonical, Inc. / NASL script (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/91341 title Ubuntu 12.04 LTS / 14.04 LTS / 15.10 : eglibc, glibc regression (USN-2985-2) NASL family Scientific Linux Local Security Checks NASL id SL_20170801_GLIBC_ON_SL7_X.NASL description Security Fix(es) : - A stack overflow vulnerability was found in nan* functions that could cause applications, which process long strings with the nan function, to crash or, potentially, execute arbitrary code. (CVE-2014-9761) - It was found that out-of-range time values passed to the strftime() function could result in an out-of-bounds memory access. This could lead to application crash or, potentially, information disclosure. (CVE-2015-8776) - An integer overflow vulnerability was found in hcreate() and hcreate_r() functions which could result in an out-of-bounds memory access. This could lead to application crash or, potentially, arbitrary code execution. (CVE-2015-8778) - A stack based buffer overflow vulnerability was found in the catopen() function. An excessively long string passed to the function could cause it to crash or, potentially, execute arbitrary code. (CVE-2015-8779) - It was found that the dynamic loader did not sanitize the LD_POINTER_GUARD environment variable. An attacker could use this flaw to bypass the pointer guarding protection on set-user-ID or set-group-ID programs to execute arbitrary code with the permissions of the user running the application. (CVE-2015-8777) last seen 2020-03-18 modified 2017-08-22 plugin id 102641 published 2017-08-22 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102641 title Scientific Linux Security Update : glibc on SL7.x x86_64 (20170801) NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2017-0051.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : - Update newmode size to fix a possible corruption - Fix AF_INET6 getaddrinfo with nscd (#1416496) - Update tests for struct sockaddr_storage changes (#1338673) - Use FL_CLOEXEC in internal calls to fopen (#1012343). - Fix CVE-2015-8779 glibc: Unbounded stack allocation in catopen function (#1358015). - Make padding in struct sockaddr_storage explicit (#1338673) - Fix detection of Intel FMA hardware (#1384281). - Add support for, ur_IN, and wal_ET locales (#1101858). - Change malloc/tst-malloc-thread-exit.c to use fewer threads and avoid timeout (#1318380). - df can fail on some systems (#1307029). - Log uname, cpuinfo, meminfo during build (#1307029). - Draw graphs for heap and stack only if MAXSIZE_HEAP and MAXSIZE_STACK are non-zero (#1331304). - Avoid unneeded calls to __check_pf in getadddrinfo (#1270950) - Fix CVE-2015-8778 glibc: Integer overflow in hcreate and hcreate_r (#1358013). - Fix CVE-2015-8776 glibc: Segmentation fault caused by passing out-of-range data to strftime (#1358011). - tzdata-update: Ignore umask setting (#1373646) - CVE-2014-9761: Fix unbounded stack allocation in nan* (#1358014) - Avoid using uninitialized data in getaddrinfo (#1223095) - Update fix for CVE-2015-7547 (#1296029). - Create helper threads with enough stack for POSIX AIO and timers (#1299319). - Fix CVE-2015-7547: getaddrinfo stack-based buffer overflow (#1296029). - Update malloc free_list cyclic fix (#1264189). - Update tzdata-update changes (#1200555). - Avoid redundant shift character in iconv output at block boundary (#1293914). - Clean up testsuite results when testing with newer kernels (#1293464). - Do not rewrite /etc/localtime if it is a symbolic link. (#1200555) - Support long lines in /etc/hosts (#1020263). - Avoid aliasing warning in tst-rec-dlopen (#1291444) - Don last seen 2020-06-01 modified 2020-06-02 plugin id 99078 published 2017-03-30 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/99078 title OracleVM 3.3 / 3.4 : glibc (OVMSA-2017-0051) NASL family SuSE Local Security Checks NASL id OPENSUSE-2016-233.NASL description This update for glibc fixes the following issues : - errorcheck-mutex-no-elision.patch: Don last seen 2020-06-05 modified 2016-02-19 plugin id 88855 published 2016-02-19 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/88855 title openSUSE Security Update : glibc (openSUSE-2016-233) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-2985-1.NASL description Martin Carpenter discovered that pt_chown in the GNU C Library did not properly check permissions for tty files. A local attacker could use this to gain administrative privileges or expose sensitive information. (CVE-2013-2207, CVE-2016-2856) Robin Hack discovered that the Name Service Switch (NSS) implementation in the GNU C Library did not properly manage its file descriptors. An attacker could use this to cause a denial of service (infinite loop). (CVE-2014-8121) Joseph Myers discovered that the GNU C Library did not properly handle long arguments to functions returning a representation of Not a Number (NaN). An attacker could use this to cause a denial of service (stack exhaustion leading to an application crash) or possibly execute arbitrary code. (CVE-2014-9761) Arjun Shankar discovered that in certain situations the nss_dns code in the GNU C Library did not properly account buffer sizes when passed an unaligned buffer. An attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2015-1781) Sumit Bose and Lukas Slebodnik discovered that the Name Service Switch (NSS) implementation in the GNU C Library did not handle long lines in the files databases correctly. A local attacker could use this to cause a denial of service (application crash) or possibly execute arbitrary code. (CVE-2015-5277) Adam Nielsen discovered that the strftime function in the GNU C Library did not properly handle out-of-range argument data. An attacker could use this to cause a denial of service (application crash) or possibly expose sensitive information. (CVE-2015-8776) Hector Marco and Ismael Ripoll discovered that the GNU C Library allowed the pointer-guarding protection mechanism to be disabled by honoring the LD_POINTER_GUARD environment variable across privilege boundaries. A local attacker could use this to exploit an existing vulnerability more easily. (CVE-2015-8777) Szabolcs Nagy discovered that the hcreate functions in the GNU C Library did not properly check its size argument, leading to an integer overflow. An attacker could use to cause a denial of service (application crash) or possibly execute arbitrary code. (CVE-2015-8778) Maksymilian Arciemowicz discovered a stack-based buffer overflow in the catopen function in the GNU C Library when handling long catalog names. An attacker could use this to cause a denial of service (application crash) or possibly execute arbitrary code. (CVE-2015-8779) Florian Weimer discovered that the getnetbyname implementation in the GNU C Library did not properly handle long names passed as arguments. An attacker could use to cause a denial of service (stack exhaustion leading to an application crash). (CVE-2016-3075). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 91334 published 2016-05-26 reporter Ubuntu Security Notice (C) 2016-2019 Canonical, Inc. / NASL script (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/91334 title Ubuntu 12.04 LTS / 14.04 LTS / 15.10 : eglibc, glibc vulnerabilities (USN-2985-1) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-3481.NASL description Several vulnerabilities have been fixed in the GNU C Library, glibc. The first vulnerability listed below is considered to have critical impact. - CVE-2015-7547 The Google Security Team and Red Hat discovered that the glibc host name resolver function, getaddrinfo, when processing AF_UNSPEC queries (for dual A/AAAA lookups), could mismanage its internal buffers, leading to a stack-based buffer overflow and arbitrary code execution. This vulnerability affects most applications which perform host name resolution using getaddrinfo, including system services. - CVE-2015-8776 Adam Nielsen discovered that if an invalid separated time value is passed to strftime, the strftime function could crash or leak information. Applications normally pass only valid time information to strftime; no affected applications are known. - CVE-2015-8778 Szabolcs Nagy reported that the rarely-used hcreate and hcreate_r functions did not check the size argument properly, leading to a crash (denial of service) for certain arguments. No impacted applications are known at this time. - CVE-2015-8779 The catopen function contains several unbound stack allocations (stack overflows), causing it the crash the process (denial of service). No applications where this issue has a security impact are currently known. While it is only necessary to ensure that all processes are not using the old glibc anymore, it is recommended to reboot the machines after applying the security upgrade. last seen 2020-06-01 modified 2020-06-02 plugin id 88768 published 2016-02-17 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/88768 title Debian DSA-3481-1 : glibc - security update NASL family Scientific Linux Local Security Checks NASL id SL_20170321_GLIBC_ON_SL6_X.NASL description Security Fix(es) : - A stack overflow vulnerability was found in nan* functions that could cause applications, which process long strings with the nan function, to crash or, potentially, execute arbitrary code. (CVE-2014-9761) - It was found that out-of-range time values passed to the strftime() function could result in an out-of-bounds memory access. This could lead to application crash or, potentially, information disclosure. (CVE-2015-8776) - An integer overflow vulnerability was found in hcreate() and hcreate_r() functions which could result in an out-of-bounds memory access. This could lead to application crash or, potentially, arbitrary code execution. (CVE-2015-8778) - A stack based buffer overflow vulnerability was found in the catopen() function. An excessively long string passed to the function could cause it to crash or, potentially, execute arbitrary code. (CVE-2015-8779) last seen 2020-03-18 modified 2017-04-06 plugin id 99216 published 2017-04-06 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/99216 title Scientific Linux Security Update : glibc on SL6.x i386/x86_64 (20170321) NASL family Fedora Local Security Checks NASL id FEDORA_2016-68ABC0BE35.NASL description This update contains minor security fixes (for CVE-2016-3075, CVE-2016-1234, CVE-2015-8778, CVE-2015-8776, CVE-2014-9761, CVE-2015-8779) and collects fixes for bugs encountered by Fedora users. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2016-05-12 plugin id 91063 published 2016-05-12 reporter This script is Copyright (C) 2016-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/91063 title Fedora 23 : glibc-2.22-15.fc23 (2016-68abc0be35) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-3480.NASL description Several vulnerabilities have been fixed in the GNU C Library, eglibc. The CVE-2015-7547 vulnerability listed below is considered to have critical impact. - CVE-2014-8121 Robin Hack discovered that the nss_files database did not correctly implement enumeration interleaved with name-based or ID-based lookups. This could cause the enumeration enter an endless loop, leading to a denial of service. - CVE-2015-1781 Arjun Shankar discovered that the _r variants of host name resolution functions (like gethostbyname_r), when performing DNS name resolution, suffered from a buffer overflow if a misaligned buffer was supplied by the applications, leading to a crash or, potentially, arbitrary code execution. Most applications are not affected by this vulnerability because they use aligned buffers. - CVE-2015-7547 The Google Security Team and Red Hat discovered that the eglibc host name resolver function, getaddrinfo, when processing AF_UNSPEC queries (for dual A/AAAA lookups), could mismanage its internal buffers, leading to a stack-based buffer overflow and arbitrary code execution. This vulnerability affects most applications which perform host name resolution using getaddrinfo, including system services. - CVE-2015-8776 Adam Nielsen discovered that if an invalid separated time value is passed to strftime, the strftime function could crash or leak information. Applications normally pass only valid time information to strftime; no affected applications are known. - CVE-2015-8777 Hector Marco-Gisbert reported that LD_POINTER_GUARD was not ignored for SUID programs, enabling an unintended bypass of a security feature. This update causes eglibc to always ignore the LD_POINTER_GUARD environment variable. - CVE-2015-8778 Szabolcs Nagy reported that the rarely-used hcreate and hcreate_r functions did not check the size argument properly, leading to a crash (denial of service) for certain arguments. No impacted applications are known at this time. - CVE-2015-8779 The catopen function contains several unbound stack allocations (stack overflows), causing it the crash the process (denial of service). No applications where this issue has a security impact are currently known. The following fixed vulnerabilities currently lack CVE assignment : - Joseph Myers reported that an integer overflow in the strxfrm can lead to heap-based buffer overflow, possibly allowing arbitrary code execution. In addition, a fallback path in strxfrm uses an unbounded stack allocation (stack overflow), leading to a crash or erroneous application behavior. - Kostya Serebryany reported that the fnmatch function could skip over the terminating NUL character of a malformed pattern, causing an application calling fnmatch to crash (denial of service). - Joseph Myers reported that the IO_wstr_overflow function, internally used by wide-oriented character streams, suffered from an integer overflow, leading to a heap-based buffer overflow. On GNU/Linux systems, wide-oriented character streams are rarely used, and no affected applications are known. - Andreas Schwab reported a memory leak (memory allocation without a matching deallocation) while processing certain DNS answers in getaddrinfo, related to the _nss_dns_gethostbyname4_r function. This vulnerability could lead to a denial of service. While it is only necessary to ensure that all processes are not using the old eglibc anymore, it is recommended to reboot the machines after applying the security upgrade. last seen 2020-06-01 modified 2020-06-02 plugin id 88767 published 2016-02-17 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/88767 title Debian DSA-3480-1 : eglibc - security update NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-0472-1.NASL description This update for glibc fixes the following issues : - CVE-2015-7547: A stack-based buffer overflow in getaddrinfo allowed remote attackers to cause a crash or execute arbitrary code via crafted and timed DNS responses (bsc#961721) - CVE-2015-8777: Insufficient checking of LD_POINTER_GUARD environment variable allowed local attackers to bypass the pointer guarding protection of the dynamic loader on set-user-ID and set-group-ID programs (bsc#950944) - CVE-2015-8776: Out-of-range time values passed to the strftime function may cause it to crash, leading to a denial of service, or potentially disclosure information (bsc#962736) - CVE-2015-8778: Integer overflow in hcreate and hcreate_r could have caused an out-of-bound memory access. leading to application crashes or, potentially, arbitrary code execution (bsc#962737) - CVE-2014-9761: A stack overflow (unbounded alloca) could have caused applications which process long strings with the nan function to crash or, potentially, execute arbitrary code. (bsc#962738) - CVE-2015-8779: A stack overflow (unbounded alloca) in the catopen function could have caused applications which pass long strings to the catopen function to crash or, potentially execute arbitrary code. (bsc#962739) The update package also includes non-security fixes. See advisory for details. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 88833 published 2016-02-18 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/88833 title SUSE SLED11 / SLES11 Security Update : glibc (SUSE-SU-2016:0472-1) NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201602-02.NASL description The remote host is affected by the vulnerability described in GLSA-201602-02 (GNU C Library: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in the GNU C Library: The Google Security Team and Red Hat discovered a stack-based buffer overflow in the send_dg() and send_vc() functions due to a buffer mismanagement when getaddrinfo() is called with AF_UNSPEC (CVE-2015-7547). The strftime() function access invalid memory when passed out-of-range data, resulting in a crash (CVE-2015-8776). An integer overflow was found in the __hcreate_r() function (CVE-2015-8778). Multiple unbounded stack allocations were found in the catopen() function (CVE-2015-8779). Please review the CVEs referenced below for additional vulnerabilities that had already been fixed in previous versions of sys-libs/glibc, for which we have not issued a GLSA before. Impact : A remote attacker could exploit any application which performs host name resolution using getaddrinfo() in order to execute arbitrary code or crash the application. The other vulnerabilities can possibly be exploited to cause a Denial of Service or leak information. Workaround : A number of mitigating factors for CVE-2015-7547 have been identified. Please review the upstream advisory and references below. last seen 2020-06-01 modified 2020-06-02 plugin id 88822 published 2016-02-18 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/88822 title GLSA-201602-02 : GNU C Library: Multiple vulnerabilities NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2017-1916.NASL description From Red Hat Security Advisory 2017:1916 : An update for glibc is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. Security Fix(es) : * A stack overflow vulnerability was found in nan* functions that could cause applications, which process long strings with the nan function, to crash or, potentially, execute arbitrary code. (CVE-2014-9761) * It was found that out-of-range time values passed to the strftime() function could result in an out-of-bounds memory access. This could lead to application crash or, potentially, information disclosure. (CVE-2015-8776) * An integer overflow vulnerability was found in hcreate() and hcreate_r() functions which could result in an out-of-bounds memory access. This could lead to application crash or, potentially, arbitrary code execution. (CVE-2015-8778) * A stack based buffer overflow vulnerability was found in the catopen() function. An excessively long string passed to the function could cause it to crash or, potentially, execute arbitrary code. (CVE-2015-8779) * It was found that the dynamic loader did not sanitize the LD_POINTER_GUARD environment variable. An attacker could use this flaw to bypass the pointer guarding protection on set-user-ID or set-group-ID programs to execute arbitrary code with the permissions of the user running the application. (CVE-2015-8777) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.4 Release Notes linked from the References section. last seen 2020-06-01 modified 2020-06-02 plugin id 102288 published 2017-08-09 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102288 title Oracle Linux 7 : glibc (ELSA-2017-1916) NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2017-0680.NASL description From Red Hat Security Advisory 2017:0680 : An update for glibc is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. Security Fix(es) : * A stack overflow vulnerability was found in nan* functions that could cause applications, which process long strings with the nan function, to crash or, potentially, execute arbitrary code. (CVE-2014-9761) * It was found that out-of-range time values passed to the strftime() function could result in an out-of-bounds memory access. This could lead to application crash or, potentially, information disclosure. (CVE-2015-8776) * An integer overflow vulnerability was found in hcreate() and hcreate_r() functions which could result in an out-of-bounds memory access. This could lead to application crash or, potentially, arbitrary code execution. (CVE-2015-8778) * A stack based buffer overflow vulnerability was found in the catopen() function. An excessively long string passed to the function could cause it to crash or, potentially, execute arbitrary code. (CVE-2015-8779) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.9 Release Notes and Red Hat Enterprise Linux 6.9 Technical Notes linked from the References section. last seen 2020-06-01 modified 2020-06-02 plugin id 99070 published 2017-03-30 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/99070 title Oracle Linux 6 : glibc (ELSA-2017-0680) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-0470-1.NASL description This update for glibc fixes the following issues : - CVE-2015-7547: A stack-based buffer overflow in getaddrinfo allowed remote attackers to cause a crash or execute arbitrary code via crafted and timed DNS responses (bsc#961721) - CVE-2015-8777: Insufficient checking of LD_POINTER_GUARD environment variable allowed local attackers to bypass the pointer guarding protection of the dynamic loader on set-user-ID and set-group-ID programs (bsc#950944) - CVE-2015-8776: Out-of-range time values passed to the strftime function may cause it to crash, leading to a denial of service, or potentially disclosure information (bsc#962736) - CVE-2015-8778: Integer overflow in hcreate and hcreate_r could have caused an out-of-bound memory access. leading to application crashes or, potentially, arbitrary code execution (bsc#962737) - CVE-2014-9761: A stack overflow (unbounded alloca) could have caused applications which process long strings with the nan function to crash or, potentially, execute arbitrary code. (bsc#962738) - CVE-2015-8779: A stack overflow (unbounded alloca) in the catopen function could have caused applications which pass long strings to the catopen function to crash or, potentially execute arbitrary code. (bsc#962739) - CVE-2013-2207: pt_chown tricked into granting access to another users pseudo-terminal (bsc#830257) - CVE-2013-4458: Stack (frame) overflow in getaddrinfo() when called with AF_INET6 (bsc#847227) - CVE-2014-8121: denial of service issue in the NSS backends (bsc#918187) - bsc#920338: Read past end of pattern in fnmatch - CVE-2015-1781: buffer overflow in nss_dns (bsc#927080) The update package also includes non-security fixes. See advisory for details. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 88831 published 2016-02-18 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/88831 title SUSE SLES11 Security Update : glibc (SUSE-SU-2016:0470-1) NASL family NewStart CGSL Local Security Checks NASL id NEWSTART_CGSL_NS-SA-2019-0099_GLIBC.NASL description The remote NewStart CGSL host, running version MAIN 4.05, has glibc packages installed that are affected by multiple vulnerabilities: - An integer overflow vulnerability was found in hcreate() and hcreate_r() functions which could result in an out- of-bounds memory access. This could lead to application crash or, potentially, arbitrary code execution. (CVE-2015-8778) - A stack based buffer overflow vulnerability was found in the catopen() function. An excessively long string passed to the function could cause it to crash or, potentially, execute arbitrary code. (CVE-2015-8779) - A flaw was found in the way memory was being allocated on the stack for user space binaries. If heap (or different memory region) and stack memory regions were adjacent to each other, an attacker could use this flaw to jump over the stack guard gap, cause controlled memory corruption on process stack or the adjacent memory region, and thus increase their privileges on the system. This is glibc-side mitigation which blocks processing of LD_LIBRARY_PATH for programs running in secure-execution mode and reduces the number of allocations performed by the processing of LD_AUDIT, LD_PRELOAD, and LD_HWCAP_MASK, making successful exploitation of this issue more difficult. (CVE-2017-1000366) - It was found that out-of-range time values passed to the strftime() function could result in an out-of-bounds memory access. This could lead to application crash or, potentially, information disclosure. (CVE-2015-8776) - A stack overflow vulnerability was found in nan* functions that could cause applications, which process long strings with the nan function, to crash or, potentially, execute arbitrary code. (CVE-2014-9761) Note that Nessus has not tested for this issue but has instead relied only on the application last seen 2020-06-01 modified 2020-06-02 plugin id 127324 published 2019-08-12 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/127324 title NewStart CGSL MAIN 4.05 : glibc Multiple Vulnerabilities (NS-SA-2019-0099) NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201702-11.NASL description The remote host is affected by the vulnerability described in GLSA-201702-11 (GNU C Library: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in the GNU C Library. Please review the CVE identifiers referenced below for details. Impact : A context-dependent attacker could possibly execute arbitrary code with the privileges of the process, disclose sensitive information, or cause a Denial of Service condition via multiple vectors. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 97254 published 2017-02-21 reporter This script is Copyright (C) 2017 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/97254 title GLSA-201702-11 : GNU C Library: Multiple vulnerabilities NASL family CentOS Local Security Checks NASL id CENTOS_RHSA-2017-1916.NASL description An update for glibc is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. Security Fix(es) : * A stack overflow vulnerability was found in nan* functions that could cause applications, which process long strings with the nan function, to crash or, potentially, execute arbitrary code. (CVE-2014-9761) * It was found that out-of-range time values passed to the strftime() function could result in an out-of-bounds memory access. This could lead to application crash or, potentially, information disclosure. (CVE-2015-8776) * An integer overflow vulnerability was found in hcreate() and hcreate_r() functions which could result in an out-of-bounds memory access. This could lead to application crash or, potentially, arbitrary code execution. (CVE-2015-8778) * A stack based buffer overflow vulnerability was found in the catopen() function. An excessively long string passed to the function could cause it to crash or, potentially, execute arbitrary code. (CVE-2015-8779) * It was found that the dynamic loader did not sanitize the LD_POINTER_GUARD environment variable. An attacker could use this flaw to bypass the pointer guarding protection on set-user-ID or set-group-ID programs to execute arbitrary code with the permissions of the user running the application. (CVE-2015-8777) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.4 Release Notes linked from the References section. last seen 2020-06-01 modified 2020-06-02 plugin id 102743 published 2017-08-25 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102743 title CentOS 7 : glibc (CESA-2017:1916) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-0471-1.NASL description This update for glibc fixes the following security issues : - CVE-2015-7547: A stack-based buffer overflow in getaddrinfo allowed remote attackers to cause a crash or execute arbitrary code via crafted and timed DNS responses (bsc#961721) - CVE-2015-8777: Insufficient checking of LD_POINTER_GUARD environment variable allowed local attackers to bypass the pointer guarding protection of the dynamic loader on set-user-ID and set-group-ID programs (bsc#950944) - CVE-2015-8776: Out-of-range time values passed to the strftime function may cause it to crash, leading to a denial of service, or potentially disclosure information (bsc#962736) - CVE-2015-8778: Integer overflow in hcreate and hcreate_r could have caused an out-of-bound memory access. leading to application crashes or, potentially, arbitrary code execution (bsc#962737) - CVE-2014-9761: A stack overflow (unbounded alloca) could have caused applications which process long strings with the nan function to crash or, potentially, execute arbitrary code. (bsc#962738) - CVE-2015-8779: A stack overflow (unbounded alloca) in the catopen function could have caused applications which pass long strings to the catopen function to crash or, potentially execute arbitrary code. (bsc#962739) The update package also includes non-security fixes. See advisory for details. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 88832 published 2016-02-18 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/88832 title SUSE SLED12 / SLES12 Security Update : glibc (SUSE-SU-2016:0471-1) NASL family Amazon Linux Local Security Checks NASL id ALA_ALAS-2017-877.NASL description Unbounded stack allocation in catopen function A stack based buffer overflow vulnerability was found in the catopen() function. An excessively long string passed to the function could cause it to crash or, potentially, execute arbitrary code.(CVE-2015-8779) Integer overflow in hcreate and hcreate_r An integer overflow vulnerability was found in hcreate() and hcreate_r() functions which could result in an out-of-bounds memory access. This could lead to application crash or, potentially, arbitrary code execution. (CVE-2015-8778) Unbounded stack allocation in nan* functions A stack overflow vulnerability was found in nan* functions that could cause applications, which process long strings with the nan function, to crash or, potentially, execute arbitrary code. (CVE-2014-9761) LD_POINTER_GUARD in the environment is not sanitized It was found that the dynamic loader did not sanitize the LD_POINTER_GUARD environment variable. An attacker could use this flaw to bypass the pointer guarding protection on set-user-ID or set-group-ID programs to execute arbitrary code with the permissions of the user running the application.(CVE-2015-8777) Segmentation fault caused by passing out-of-range data to strftime() It was found that out-of-range time values passed to the strftime() function could result in an out-of-bounds memory access. This could lead to application crash or, potentially, information disclosure. (CVE-2015-8776) last seen 2020-06-01 modified 2020-06-02 plugin id 102865 published 2017-09-01 reporter This script is Copyright (C) 2017-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/102865 title Amazon Linux AMI : glibc (ALAS-2017-877) NASL family SuSE Local Security Checks NASL id OPENSUSE-2016-224.NASL description This update for glibc fixes the following security issues : - CVE-2015-7547: A stack-based buffer overflow in getaddrinfo allowed remote attackers to cause a crash or execute arbitrary code via crafted and timed DNS responses (bsc#961721) - CVE-2015-8777: Insufficient checking of LD_POINTER_GUARD environment variable allowed local attackers to bypass the pointer guarding protection of the dynamic loader on set-user-ID and set-group-ID programs (bsc#950944) - CVE-2015-8776: Out-of-range time values passed to the strftime function may cause it to crash, leading to a denial of service, or potentially disclosure information (bsc#962736) - CVE-2015-8778: Integer overflow in hcreate and hcreate_r could have caused an out-of-bound memory access. leading to application crashes or, potentially, arbitrary code execution (bsc#962737) - CVE-2014-9761: A stack overflow (unbounded alloca) could have caused applications which process long strings with the nan function to crash or, potentially, execute arbitrary code. (bsc#962738) - CVE-2015-8779: A stack overflow (unbounded alloca) in the catopen function could have caused applications which pass long strings to the catopen function to crash or, potentially execute arbitrary code. (bsc#962739) The following non-security bugs were fixed : - bsc#955647: Resource leak in resolver - bsc#956716: Don last seen 2020-06-05 modified 2016-02-18 plugin id 88829 published 2016-02-18 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/88829 title openSUSE Security Update : glibc (openSUSE-2016-224) NASL family CentOS Local Security Checks NASL id CENTOS_RHSA-2017-0680.NASL description An update for glibc is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. Security Fix(es) : * A stack overflow vulnerability was found in nan* functions that could cause applications, which process long strings with the nan function, to crash or, potentially, execute arbitrary code. (CVE-2014-9761) * It was found that out-of-range time values passed to the strftime() function could result in an out-of-bounds memory access. This could lead to application crash or, potentially, information disclosure. (CVE-2015-8776) * An integer overflow vulnerability was found in hcreate() and hcreate_r() functions which could result in an out-of-bounds memory access. This could lead to application crash or, potentially, arbitrary code execution. (CVE-2015-8778) * A stack based buffer overflow vulnerability was found in the catopen() function. An excessively long string passed to the function could cause it to crash or, potentially, execute arbitrary code. (CVE-2015-8779) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.9 Release Notes and Red Hat Enterprise Linux 6.9 Technical Notes linked from the References section. last seen 2020-06-01 modified 2020-06-02 plugin id 97958 published 2017-03-27 reporter This script is Copyright (C) 2017 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/97958 title CentOS 6 : glibc (CESA-2017:0680) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2017-1199.NASL description According to the versions of the glibc packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A stack overflow vulnerability was found in nan* functions that could cause applications, which process long strings with the nan function, to crash or, potentially, execute arbitrary code. (CVE-2014-9761) - It was found that out-of-range time values passed to the strftime() function could result in an out-of-bounds memory access. This could lead to application crash or, potentially, information disclosure. (CVE-2015-8776) - An integer overflow vulnerability was found in hcreate() and hcreate_r() functions which could result in an out-of-bounds memory access. This could lead to application crash or, potentially, arbitrary code execution. (CVE-2015-8778) - A stack based buffer overflow vulnerability was found in the catopen() function. An excessively long string passed to the function could cause it to crash or, potentially, execute arbitrary code. (CVE-2015-8779) - It was found that the dynamic loader did not sanitize the LD_POINTER_GUARD environment variable. An attacker could use this flaw to bypass the pointer guarding protection on set-user-ID or set-group-ID programs to execute arbitrary code with the permissions of the user running the application. (CVE-2015-8777) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-05-06 modified 2017-09-11 plugin id 103057 published 2017-09-11 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103057 title EulerOS 2.0 SP1 : glibc (EulerOS-SA-2017-1199) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-1551.NASL description According to the versions of the glibc packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - stdlib/canonicalize.c in the GNU C Library (aka glibc or libc6) 2.27 and earlier, when processing very long pathname arguments to the realpath function, could encounter an integer overflow on 32-bit architectures, leading to a stack-based buffer overflow and, potentially, arbitrary code execution.(CVE-2018-11236) - An integer overflow vulnerability was found in hcreate() and hcreate_r() functions which could result in an out-of-bounds memory access. This could lead to application crash or, potentially, arbitrary code execution.(CVE-2015-8778) - A stack-based buffer overflow was found in the way the libresolv library performed dual A/AAAA DNS queries. A remote attacker could create a specially crafted DNS response which could cause libresolv to crash or, potentially, execute code with the permissions of the user running the library. Note: this issue is only exposed when libresolv is called from the nss_dns NSS service module.(CVE-2015-7547) - A flaw was found in the regular expression matching routines that process multibyte character input. If an application utilized the glibc regular expression matching mechanism, an attacker could provide specially-crafted input that, when processed, would cause the application to crash.(CVE-2013-0242) - A flaw was found in the way memory was being allocated on the stack for user space binaries. If heap (or different memory region) and stack memory regions were adjacent to each other, an attacker could use this flaw to jump over the stack guard gap, cause controlled memory corruption on process stack or the adjacent memory region, and thus increase their privileges on the system. This is glibc-side mitigation which blocks processing of LD_LIBRARY_PATH for programs running in secure-execution mode and reduces the number of allocations performed by the processing of LD_AUDIT, LD_PRELOAD, and LD_HWCAP_MASK, making successful exploitation of this issue more difficult.(CVE-2017-1000366) - The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2.26, when EDNS support is enabled, will solicit large UDP responses from name servers, potentially simplifying off-path DNS spoofing attacks due to IP fragmentation.(CVE-2017-12132) - It was found that the files back end of Name Service Switch (NSS) did not isolate iteration over an entire database from key-based look-up API calls. An application performing look-ups on a database while iterating over it could enter an infinite loop, leading to a denial of service.(CVE-2014-8121) - Stack-based buffer overflow in the getaddrinfo function in sysdeps/posix/getaddrinfo.c in the GNU C Library (aka glibc or libc6) allows remote attackers to cause a denial of service (crash) via vectors involving hostent conversion. NOTE: this vulnerability exists because of an incomplete fix for CVE-2013-4458.(CVE-2016-3706) - In glibc 2.26 and earlier there is confusion in the usage of getcwd() by realpath() which can be used to write before the destination buffer leading to a buffer underflow and potential code execution.(CVE-2018-1000001) - Stack-based buffer overflow in string/strcoll_l.c in the GNU C Library (aka glibc or libc6) 2.17 and earlier allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a long string that triggers a malloc failure and use of the alloca function.(CVE-2012-4424) - It was found that the dynamic loader did not sanitize the LD_POINTER_GUARD environment variable. An attacker could use this flaw to bypass the pointer guarding protection on set-user-ID or set-group-ID programs to execute arbitrary code with the permissions of the user running the application.(CVE-2015-8777) - The glob function in glob.c in the GNU C Library (aka glibc or libc6) before 2.27 contains a buffer overflow during unescaping of user names with the ~ operator.(CVE-2017-15804) - res_query in libresolv in glibc before 2.25 allows remote attackers to cause a denial of service (NULL pointer dereference and process crash).(CVE-2015-5180) - pt_chown in GNU C Library (aka glibc or libc6) before 2.18 does not properly check permissions for tty files, which allows local users to change the permission on the files and obtain access to arbitrary pseudo-terminals by leveraging a FUSE file system.(CVE-2013-2207) - A stack overflow flaw was found in glibc last seen 2020-03-17 modified 2019-05-14 plugin id 125004 published 2019-05-14 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/125004 title EulerOS Virtualization 3.0.1.0 : glibc (EulerOS-SA-2019-1551) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2017-1200.NASL description According to the versions of the glibc packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A stack overflow vulnerability was found in nan* functions that could cause applications, which process long strings with the nan function, to crash or, potentially, execute arbitrary code. (CVE-2014-9761) - It was found that out-of-range time values passed to the strftime() function could result in an out-of-bounds memory access. This could lead to application crash or, potentially, information disclosure. (CVE-2015-8776) - An integer overflow vulnerability was found in hcreate() and hcreate_r() functions which could result in an out-of-bounds memory access. This could lead to application crash or, potentially, arbitrary code execution. (CVE-2015-8778) - A stack based buffer overflow vulnerability was found in the catopen() function. An excessively long string passed to the function could cause it to crash or, potentially, execute arbitrary code. (CVE-2015-8779) - It was found that the dynamic loader did not sanitize the LD_POINTER_GUARD environment variable. An attacker could use this flaw to bypass the pointer guarding protection on set-user-ID or set-group-ID programs to execute arbitrary code with the permissions of the user running the application. (CVE-2015-8777) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-05-06 modified 2017-09-11 plugin id 103058 published 2017-09-11 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103058 title EulerOS 2.0 SP2 : glibc (EulerOS-SA-2017-1200)
Packetstorm
| data source | https://packetstormsecurity.com/files/download/154361/SA-20190904-0.txt |
| id | PACKETSTORM:154361 |
| last seen | 2019-09-05 |
| published | 2019-09-04 |
| reporter | T. Weber |
| source | https://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html |
| title | Cisco Device Hardcoded Credentials / GNU glibc / BusyBox |
Redhat
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References
- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184626.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184626.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00036.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00036.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00037.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00037.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00038.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00038.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00039.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00039.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00042.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00042.html
- http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html
- http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html
- http://rhn.redhat.com/errata/RHSA-2017-0680.html
- http://rhn.redhat.com/errata/RHSA-2017-0680.html
- http://seclists.org/fulldisclosure/2019/Sep/7
- http://seclists.org/fulldisclosure/2019/Sep/7
- http://www.debian.org/security/2016/dsa-3480
- http://www.debian.org/security/2016/dsa-3480
- http://www.debian.org/security/2016/dsa-3481
- http://www.debian.org/security/2016/dsa-3481
- http://www.openwall.com/lists/oss-security/2016/01/19/11
- http://www.openwall.com/lists/oss-security/2016/01/19/11
- http://www.openwall.com/lists/oss-security/2016/01/20/1
- http://www.openwall.com/lists/oss-security/2016/01/20/1
- http://www.securityfocus.com/bid/82244
- http://www.securityfocus.com/bid/82244
- http://www.ubuntu.com/usn/USN-2985-1
- http://www.ubuntu.com/usn/USN-2985-1
- http://www.ubuntu.com/usn/USN-2985-2
- http://www.ubuntu.com/usn/USN-2985-2
- https://access.redhat.com/errata/RHSA-2017:1916
- https://access.redhat.com/errata/RHSA-2017:1916
- https://seclists.org/bugtraq/2019/Sep/7
- https://seclists.org/bugtraq/2019/Sep/7
- https://security.gentoo.org/glsa/201602-02
- https://security.gentoo.org/glsa/201602-02
- https://security.gentoo.org/glsa/201702-11
- https://security.gentoo.org/glsa/201702-11
- https://sourceware.org/bugzilla/show_bug.cgi?id=17905
- https://sourceware.org/bugzilla/show_bug.cgi?id=17905
- https://www.sourceware.org/ml/libc-alpha/2016-02/msg00502.html
- https://www.sourceware.org/ml/libc-alpha/2016-02/msg00502.html