Vulnerabilities > CVE-2014-8121 - Code vulnerability in multiple products
Attack vector
UNKNOWN Attack complexity
UNKNOWN Privileges required
UNKNOWN Confidentiality impact
UNKNOWN Integrity impact
UNKNOWN Availability impact
UNKNOWN Summary
DB_LOOKUP in nss_files/files-XXX.c in the Name Service Switch (NSS) in GNU C Library (aka glibc or libc6) 2.21 and earlier does not properly check if a file is open, which allows remote attackers to cause a denial of service (infinite loop) by performing a look-up on a database while iterating over it, which triggers the file pointer to be reset.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Nessus
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 CentOS Local Security Checks NASL id CENTOS_RHSA-2015-0327.NASL description Updated glibc packages that fix two security issues and several bugs are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the Name Server Caching Daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. An out-of-bounds read flaw was found in the way glibc last seen 2020-06-01 modified 2020-06-02 plugin id 81889 published 2015-03-18 reporter This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/81889 title CentOS 7 : glibc (CESA-2015:0327) 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 Red Hat Local Security Checks NASL id REDHAT-RHSA-2015-0327.NASL description Updated glibc packages that fix two security issues and several bugs are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the Name Server Caching Daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. An out-of-bounds read flaw was found in the way glibc last seen 2020-06-01 modified 2020-06-02 plugin id 81630 published 2015-03-05 reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/81630 title RHEL 7 : glibc (RHSA-2015:0327) 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 OPENSUSE-2015-383.NASL description glibc was updated to fix security issues and bugs : - Separate internal state between getXXent and getXXbyYY NSS calls (CVE-2014-8121, bsc#918187, BZ #18007) - Fix read past end of pattern in fnmatch (bsc#920338, BZ #17062, BZ #18032, BZ #18036) - Fix buffer overflow in nss_dns (CVE-2015-1781, bsc#927080, BZ #18287) Also this bug got fixed : - Simplify handling of nameserver configuration in resolver (bsc#917539) last seen 2020-06-05 modified 2015-05-28 plugin id 83867 published 2015-05-28 reporter This script is Copyright (C) 2015-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/83867 title openSUSE Security Update : glibc / glibc-testsuite / glibc-utils / etc (openSUSE-2015-383) 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 Scientific Linux Local Security Checks NASL id SL_20150305_GLIBC_ON_SL7_X.NASL description An out-of-bounds read flaw was found in the way glibc last seen 2020-03-18 modified 2015-03-26 plugin id 82250 published 2015-03-26 reporter This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/82250 title Scientific Linux Security Update : glibc on SL7.x x86_64 (20150305) 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 Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2015-0327.NASL description From Red Hat Security Advisory 2015:0327 : Updated glibc packages that fix two security issues and several bugs are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the Name Server Caching Daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. An out-of-bounds read flaw was found in the way glibc last seen 2020-06-01 modified 2020-06-02 plugin id 81722 published 2015-03-10 reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/81722 title Oracle Linux 7 : glibc (ELSA-2015-0327) NASL family SuSE Local Security Checks NASL id SUSE_SU-2015-1844-1.NASL description glibc was updated to fix bugs and security issues. Security issues fixed : - A buffer overflow in nss_dns was fixed that could lead to crashes. (CVE-2015-1781, bsc#927080, BZ #18287) - A denial of service attack (out of memory) in the NSS files backend was fixed (CVE-2014-8121, bsc#918187, GLIBC BZ #18007) Non security bugs fixed : - Fix regression in threaded application malloc performance (bsc#915955, GLIBC#17195) - Fix read past end of pattern in fnmatch (bsc#920338, GLIBC#17062, GLIBC#18032, GLIBC#18036) - Record TTL also for DNS PTR queries (bsc#928723, GLIBC#18513) - Increase MINSIGSTKSZ and SIGSTKSZ for aarch64 (bsc#931480, GLIBC#16850) - Fix handling of IPv6 nameservers (bsc#939211, GLIBC#13028, GLIBC#17053) - Avoid use of asm/ptrace.h (bsc#934084) - Do not corrupt the top of a threaded heap if top chunk is MINSIZE (GLIBC#18502) - Terminate unwinding after makecontext_ret on s390 (bsc#940332. bsc#944494, GLIBC#18508) - Restore signal mask in set/swapcontext on s390 (bsc#940195, bsc#944494, GLIBC#18080) - fix dlopen in static binaries (bsc#937853, GLIBC#17250) - Properly reread entry after failure in nss_files getent function (bsc#945779, BZ #18991) Features added : - AVX512 support (fate#318844) - Add compatibility symlinks for LSB 3.0 (fate#318933) 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 86696 published 2015-11-02 reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/86696 title SUSE SLED12 / SLES12 Security Update : glibc (SUSE-SU-2015:1844-1) NASL family SuSE Local Security Checks NASL id SUSE_SU-2015-1424-1.NASL description This update for glibc provides fixes for security and non-security issues. These security issues have been fixed : - CVE-2015-1781: Buffer length after padding in resolv/nss_dns/dns-host.c. (bsc#927080) - CVE-2013-2207: pt_chown did not properly check permissions for tty files, which allowed local users to change the permission on the files and obtain access to arbitrary pseudo-terminals by leveraging a FUSE file system. (bsc#830257) - CVE-2014-8121: DB_LOOKUP in the Name Service Switch (NSS) did not properly check if a file is open, which allowed remote attackers to cause a denial of service (infinite loop) by performing a look-up while the database is iterated over the database, which triggers the file pointer to be reset. (bsc#918187) - Fix read past end of pattern in fnmatch. (bsc#920338) 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 85624 published 2015-08-25 reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/85624 title SUSE SLED11 / SLES11 Security Update : glibc (SUSE-SU-2015:1424-1) NASL family Amazon Linux Local Security Checks NASL id ALA_ALAS-2015-495.NASL description An out-of-bounds read flaw was found in the way glibc last seen 2020-06-01 modified 2020-06-02 plugin id 82044 published 2015-03-25 reporter This script is Copyright (C) 2015-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/82044 title Amazon Linux AMI : glibc (ALAS-2015-495) NASL family Debian Local Security Checks NASL id DEBIAN_DLA-316.NASL description Several vulnerabilities have been discovered in eglibc that may lead to a privilege escalation or denial of service. Glibc pointer guarding weakness A weakness in the dynamic loader prior has been found. The issue is that the LD_POINTER_GUARD in the environment is not sanitized allowing local attackers easily to bypass the pointer guarding protection on set-user-ID and set-group-ID programs. Potential application crash due to overread in fnmatch When processing certain malformed patterns, fnmatch can skip over the NUL byte terminating the pattern. This can potentially result in an application crash if fnmatch hits an unmapped page before encountering a NUL byte. _IO_wstr_overflow integer overflow A miscalculation in _IO_wstr_overflow could potentially be exploited to overflow a buffer. CVE-2014-8121 DB_LOOKUP in nss_files/files-XXX.c in the Name Service Switch (NSS) in GNU C Library (aka glibc or libc6) 2.21 and earlier does not properly check if a file is open, which allows remote attackers to cause a denial of service (infinite loop) by performing a look-up while the database is iterated over the database, which triggers the file pointer to be reset. For the oldoldstable distribution (squeeze), these problems have been fixed in version 2.11.3-4+deb6u7. We recommend that you update your packages. NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-03-17 modified 2015-09-28 plugin id 86155 published 2015-09-28 reporter This script is Copyright (C) 2015-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/86155 title Debian DLA-316-1 : eglibc security update 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)
Redhat
| advisories |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| rpms |
|
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1165192
- http://rhn.redhat.com/errata/RHSA-2015-0327.html
- https://sourceware.org/ml/libc-alpha/2015-02/msg00617.html
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00019.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00036.html
- http://www.ubuntu.com/usn/USN-2985-2
- http://www.ubuntu.com/usn/USN-2985-1
- https://security.gentoo.org/glsa/201602-02
- http://www.securityfocus.com/bid/73038
- http://www.debian.org/security/2016/dsa-3480