Vulnerabilities > CVE-2015-3238 - Information Exposure vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
LOW Integrity impact
NONE Availability impact
LOW Summary
The _unix_run_helper_binary function in the pam_unix module in Linux-PAM (aka pam) before 1.2.1, when unable to directly access passwords, allows local users to enumerate usernames or cause a denial of service (hang) via a large password.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Subverting Environment Variable Values The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
- Footprinting An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
- Exploiting Trust in Client (aka Make the Client Invisible) An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
- Browser Fingerprinting An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
- Session Credential Falsification through Prediction This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.
Nessus
NASL family SuSE Local Security Checks NASL id SUSE_SU-2017-1398-1.NASL description This update for pam fixes the following issues : - CVE-2015-3238: pam_unix in conjunction with SELinux allowed for DoS attacks (bsc#934920). - log a hint to syslog if /etc/nologin is present, but empty (bsc#1015565). - If /etc/nologin is present, but empty, log a hint to syslog. (bsc#1015565) - Added support for libowcrypt.so, if present, to configure support for BLOWFISH (bsc#1037824) 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 100408 published 2017-05-25 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/100408 title SUSE SLED12 / SLES12 Security Update : pam (SUSE-SU-2017:1398-1) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from SUSE update advisory SUSE-SU-2017:1398-1. # The text itself is copyright (C) SUSE. # include("compat.inc"); if (description) { script_id(100408); script_version("3.6"); script_cvs_date("Date: 2019/09/11 11:22:15"); script_cve_id("CVE-2015-3238"); script_bugtraq_id(75428); script_name(english:"SUSE SLED12 / SLES12 Security Update : pam (SUSE-SU-2017:1398-1)"); script_summary(english:"Checks rpm output for the updated packages."); script_set_attribute( attribute:"synopsis", value:"The remote SUSE host is missing one or more security updates." ); script_set_attribute( attribute:"description", value: "This update for pam fixes the following issues : - CVE-2015-3238: pam_unix in conjunction with SELinux allowed for DoS attacks (bsc#934920). - log a hint to syslog if /etc/nologin is present, but empty (bsc#1015565). - If /etc/nologin is present, but empty, log a hint to syslog. (bsc#1015565) - Added support for libowcrypt.so, if present, to configure support for BLOWFISH (bsc#1037824) 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." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1015565" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1037824" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=934920" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2015-3238/" ); # https://www.suse.com/support/update/announcement/2017/suse-su-20171398-1/ script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?69992de7" ); script_set_attribute( attribute:"solution", value: "To install this SUSE Security Update use YaST online_update. Alternatively you can run the command listed for your product : SUSE Linux Enterprise Software Development Kit 12-SP2:zypper in -t patch SUSE-SLE-SDK-12-SP2-2017-865=1 SUSE Linux Enterprise Software Development Kit 12-SP1:zypper in -t patch SUSE-SLE-SDK-12-SP1-2017-865=1 SUSE Linux Enterprise Server for Raspberry Pi 12-SP2:zypper in -t patch SUSE-SLE-RPI-12-SP2-2017-865=1 SUSE Linux Enterprise Server 12-SP2:zypper in -t patch SUSE-SLE-SERVER-12-SP2-2017-865=1 SUSE Linux Enterprise Server 12-SP1:zypper in -t patch SUSE-SLE-SERVER-12-SP1-2017-865=1 SUSE Linux Enterprise Desktop 12-SP2:zypper in -t patch SUSE-SLE-DESKTOP-12-SP2-2017-865=1 SUSE Linux Enterprise Desktop 12-SP1:zypper in -t patch SUSE-SLE-DESKTOP-12-SP1-2017-865=1 OpenStack Cloud Magnum Orchestration 7:zypper in -t patch SUSE-OpenStack-Cloud-Magnum-Orchestration-7-2017-865=1 To bring your system up-to-date, use 'zypper patch'." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/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:L/I:N/A:L"); 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:novell:suse_linux:pam"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:pam-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:pam-debugsource"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12"); script_set_attribute(attribute:"vuln_publication_date", value:"2015/08/24"); script_set_attribute(attribute:"patch_publication_date", value:"2017/05/24"); script_set_attribute(attribute:"plugin_publication_date", value:"2017/05/25"); 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:"SuSE Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/SuSE/release"); if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE"); os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE"); os_ver = os_ver[1]; if (! preg(pattern:"^(SLED12|SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED12 / SLES12", "SUSE " + os_ver); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu); sp = get_kb_item("Host/SuSE/patchlevel"); if (isnull(sp)) sp = "0"; if (os_ver == "SLES12" && (! preg(pattern:"^(1|2)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP1/2", os_ver + " SP" + sp); if (os_ver == "SLED12" && (! preg(pattern:"^(1|2)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP1/2", os_ver + " SP" + sp); flag = 0; if (rpm_check(release:"SLES12", sp:"1", reference:"pam-1.1.8-23.1")) flag++; if (rpm_check(release:"SLES12", sp:"1", reference:"pam-debuginfo-1.1.8-23.1")) flag++; if (rpm_check(release:"SLES12", sp:"1", reference:"pam-debugsource-1.1.8-23.1")) flag++; if (rpm_check(release:"SLES12", sp:"1", reference:"pam-32bit-1.1.8-23.1")) flag++; if (rpm_check(release:"SLES12", sp:"1", reference:"pam-debuginfo-32bit-1.1.8-23.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"pam-1.1.8-23.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"pam-debuginfo-1.1.8-23.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"pam-debugsource-1.1.8-23.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"pam-32bit-1.1.8-23.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"pam-debuginfo-32bit-1.1.8-23.1")) flag++; if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"pam-1.1.8-23.1")) flag++; if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"pam-32bit-1.1.8-23.1")) flag++; if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"pam-debuginfo-1.1.8-23.1")) flag++; if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"pam-debuginfo-32bit-1.1.8-23.1")) flag++; if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"pam-debugsource-1.1.8-23.1")) flag++; if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"pam-1.1.8-23.1")) flag++; if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"pam-32bit-1.1.8-23.1")) flag++; if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"pam-debuginfo-1.1.8-23.1")) flag++; if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"pam-debuginfo-32bit-1.1.8-23.1")) flag++; if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"pam-debugsource-1.1.8-23.1")) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get()); else security_warning(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "pam"); }NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-2935-3.NASL description USN-2935-1 fixed vulnerabilities in PAM. The updates contained a packaging change that prevented upgrades in certain multiarch environments. USN-2935-2 intended to fix the problem but was incomplete for Ubuntu 12.04 LTS. This update fixes the problem in Ubuntu 12.04 LTS. We apologize for the inconvenience. It was discovered that the PAM pam_userdb module incorrectly used a case-insensitive method when comparing hashed passwords. A local attacker could possibly use this issue to make brute-force attacks easier. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2013-7041) Sebastian Krahmer discovered that the PAM pam_timestamp module incorrectly performed filtering. A local attacker could use this issue to create arbitrary files, or possibly bypass authentication. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2014-2583) Sebastien Macke discovered that the PAM pam_unix module incorrectly handled large passwords. A local attacker could possibly use this issue in certain environments to enumerate usernames or cause a denial of service. (CVE-2015-3238). 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 90021 published 2016-03-18 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/90021 title Ubuntu 12.04 LTS : pam regression (USN-2935-3) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Ubuntu Security Notice USN-2935-3. The text # itself is copyright (C) Canonical, Inc. See # <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered # trademark of Canonical, Inc. # include("compat.inc"); if (description) { script_id(90021); script_version("2.9"); script_cvs_date("Date: 2019/09/18 12:31:45"); script_cve_id("CVE-2013-7041", "CVE-2014-2583", "CVE-2015-3238"); script_xref(name:"USN", value:"2935-3"); script_name(english:"Ubuntu 12.04 LTS : pam regression (USN-2935-3)"); script_summary(english:"Checks dpkg output for updated package."); script_set_attribute( attribute:"synopsis", value:"The remote Ubuntu host is missing a security-related patch." ); script_set_attribute( attribute:"description", value: "USN-2935-1 fixed vulnerabilities in PAM. The updates contained a packaging change that prevented upgrades in certain multiarch environments. USN-2935-2 intended to fix the problem but was incomplete for Ubuntu 12.04 LTS. This update fixes the problem in Ubuntu 12.04 LTS. We apologize for the inconvenience. It was discovered that the PAM pam_userdb module incorrectly used a case-insensitive method when comparing hashed passwords. A local attacker could possibly use this issue to make brute-force attacks easier. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2013-7041) Sebastian Krahmer discovered that the PAM pam_timestamp module incorrectly performed filtering. A local attacker could use this issue to create arbitrary files, or possibly bypass authentication. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2014-2583) Sebastien Macke discovered that the PAM pam_unix module incorrectly handled large passwords. A local attacker could possibly use this issue in certain environments to enumerate usernames or cause a denial of service. (CVE-2015-3238). 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." ); script_set_attribute( attribute:"see_also", value:"https://usn.ubuntu.com/2935-3/" ); script_set_attribute( attribute:"solution", value:"Update the affected libpam-modules package." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N"); 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:L/I:N/A:L"); 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:canonical:ubuntu_linux:libpam-modules"); script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:12.04:-:lts"); script_set_attribute(attribute:"vuln_publication_date", value:"2014/04/10"); script_set_attribute(attribute:"patch_publication_date", value:"2016/03/17"); script_set_attribute(attribute:"plugin_publication_date", value:"2016/03/18"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"Ubuntu Security Notice (C) 2016-2019 Canonical, Inc. / NASL script (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Ubuntu Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l"); exit(0); } include("audit.inc"); include("ubuntu.inc"); include("misc_func.inc"); if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/Ubuntu/release"); if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu"); release = chomp(release); if (! preg(pattern:"^(12\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 12.04", "Ubuntu " + release); if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu); flag = 0; if (ubuntu_check(osver:"12.04", pkgname:"libpam-modules", pkgver:"1.1.3-7ubuntu2.3")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_WARNING, extra : ubuntu_report_get() ); exit(0); } else { tested = ubuntu_pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libpam-modules"); }NASL family Amazon Linux Local Security Checks NASL id ALA_ALAS-2015-589.NASL description It was discovered that the _unix_run_helper_binary() function of PAM last seen 2020-06-01 modified 2020-06-02 plugin id 85747 published 2015-09-03 reporter This script is Copyright (C) 2015-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/85747 title Amazon Linux AMI : pam (ALAS-2015-589) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Amazon Linux AMI Security Advisory ALAS-2015-589. # include("compat.inc"); if (description) { script_id(85747); script_version("2.3"); script_cvs_date("Date: 2018/04/18 15:09:35"); script_cve_id("CVE-2015-3238"); script_xref(name:"ALAS", value:"2015-589"); script_xref(name:"RHSA", value:"2015:1640"); script_name(english:"Amazon Linux AMI : pam (ALAS-2015-589)"); script_summary(english:"Checks rpm output for the updated packages"); script_set_attribute( attribute:"synopsis", value:"The remote Amazon Linux AMI host is missing a security update." ); script_set_attribute( attribute:"description", value: "It was discovered that the _unix_run_helper_binary() function of PAM's unix_pam module could write to a blocking pipe, possibly causing the function to become unresponsive. An attacker able to supply large passwords to the unix_pam module could use this flaw to enumerate valid user accounts, or cause a denial of service on the system. (CVE-2015-3238)" ); script_set_attribute( attribute:"see_also", value:"https://alas.aws.amazon.com/ALAS-2015-589.html" ); script_set_attribute( attribute:"solution", value:"Run 'yum update pam' to update your system." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:P"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:pam"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:pam-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:pam-devel"); script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux"); script_set_attribute(attribute:"patch_publication_date", value:"2015/09/02"); script_set_attribute(attribute:"plugin_publication_date", value:"2015/09/03"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2015-2018 Tenable Network Security, Inc."); script_family(english:"Amazon Linux Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/AmazonLinux/release"); if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux"); os_ver = pregmatch(pattern: "^AL(A|\d)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux"); os_ver = os_ver[1]; if (os_ver != "A") { if (os_ver == 'A') os_ver = 'AMI'; audit(AUDIT_OS_NOT, "Amazon Linux AMI", "Amazon Linux " + os_ver); } if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (rpm_check(release:"ALA", reference:"pam-1.1.8-12.32.amzn1")) flag++; if (rpm_check(release:"ALA", reference:"pam-debuginfo-1.1.8-12.32.amzn1")) flag++; if (rpm_check(release:"ALA", reference:"pam-devel-1.1.8-12.32.amzn1")) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get()); else security_warning(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "pam / pam-debuginfo / pam-devel"); }NASL family F5 Networks Local Security Checks NASL id F5_BIGIP_SOL17494.NASL description The _unix_run_helper_binary function in the pam_unix module in Linux-PAM (aka pam) before 1.2.1, when unable to directly access passwords, allows local users to enumerate usernames or cause a denial of service (hang) via a large password. last seen 2020-06-01 modified 2020-06-02 plugin id 88438 published 2016-01-28 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/88438 title F5 Networks BIG-IP : PAM vulnerability (SOL17494) NASL family Scientific Linux Local Security Checks NASL id SL_20150818_PAM_ON_SL6_X.NASL description It was discovered that the _unix_run_helper_binary() function of PAM last seen 2020-03-18 modified 2015-08-20 plugin id 85564 published 2015-08-20 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/85564 title Scientific Linux Security Update : pam on SL6.x, SL7.x i386/x86_64 (20150818) NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2015-0117.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : - fix CVE-2015-3238 - DoS due to blocking pipe with very long password - make pam_pwhistory and pam_unix tolerant of opasswd file corruption - pam_userdb: allow any crypt hash algorithm to be used (#1119289) - pam_cracklib: improve documentation (#889233) - unbreak authentication if ld.so.preload is not empty - correct off by one error in account expiration calculation (#947011) - pam_console_apply: do not print error if console.perms.d is empty - properly handle all cases where crypt might return NULL (#1026203) - pam_limits: clarify documentation of maxsyslogins limit (#1028490) - pam_access: call DNS resolution only when necessary and cache results (#1029817) - pam_limits: nofile applies to file descriptors not files (#1040664) - pam_limits: check whether the utmp login entry is valid (#1054936) - correct URLs in spec file (#1071770) - pam_userdb: correct the example in man page (#1078779) - pam_selinux: canonicalize username for getseuser (#1083981) - pam_access: fix netgroup matching and @user@@netgroup parsing (#740233) - pam_tty_audit: allow for runtime backwards compatibility with old kernels - add option to pam_tty_audit to disable auditing of password input last seen 2020-06-01 modified 2020-06-02 plugin id 85529 published 2015-08-19 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/85529 title OracleVM 3.3 : pam (OVMSA-2015-0117) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2015-1640.NASL description An updated pam package that fixes one security issue is now available for Red Hat Enterprise Linux 6 and 7. Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. Pluggable Authentication Modules (PAM) provide a system whereby administrators can set up authentication policies without having to recompile programs to handle authentication. It was discovered that the _unix_run_helper_binary() function of PAM last seen 2020-06-01 modified 2020-06-02 plugin id 85530 published 2015-08-19 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/85530 title RHEL 6 / 7 : pam (RHSA-2015:1640) NASL family Fedora Local Security Checks NASL id FEDORA_2015-10848.NASL description Update fixing a minor security issue CVE-2015-3238. 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 2015-07-06 plugin id 84520 published 2015-07-06 reporter This script is Copyright (C) 2015-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/84520 title Fedora 21 : pam-1.1.8-19.fc21 (2015-10848) NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2015-1640.NASL description From Red Hat Security Advisory 2015:1640 : An updated pam package that fixes one security issue is now available for Red Hat Enterprise Linux 6 and 7. Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. Pluggable Authentication Modules (PAM) provide a system whereby administrators can set up authentication policies without having to recompile programs to handle authentication. It was discovered that the _unix_run_helper_binary() function of PAM last seen 2020-06-01 modified 2020-06-02 plugin id 85526 published 2015-08-19 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/85526 title Oracle Linux 6 / 7 : pam (ELSA-2015-1640) NASL family CentOS Local Security Checks NASL id CENTOS_RHSA-2015-1640.NASL description An updated pam package that fixes one security issue is now available for Red Hat Enterprise Linux 6 and 7. Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. Pluggable Authentication Modules (PAM) provide a system whereby administrators can set up authentication policies without having to recompile programs to handle authentication. It was discovered that the _unix_run_helper_binary() function of PAM last seen 2020-06-01 modified 2020-06-02 plugin id 85516 published 2015-08-19 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/85516 title CentOS 6 / 7 : pam (CESA-2015:1640) NASL family Fedora Local Security Checks NASL id FEDORA_2015-10830.NASL description Update fixing a minor security issue CVE-2015-3238. 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 2015-07-01 plugin id 84481 published 2015-07-01 reporter This script is Copyright (C) 2015-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/84481 title Fedora 22 : pam-1.1.8-19.fc22 (2015-10830) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-1645-1.NASL description This update for pam fixes two security issues. These security issues were fixed : - CVE-2015-3238: pam_unix in conjunction with SELinux allowed for DoS attacks (bsc#934920). - CVE-2013-7041: Compare password hashes case-sensitively (bsc#854480). 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 93163 published 2016-08-29 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/93163 title SUSE SLES11 Security Update : pam (SUSE-SU-2016:1645-1) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-2935-2.NASL description USN-2935-1 fixed vulnerabilities in PAM. The updates contained a packaging change that prevented upgrades in certain multiarch environments. This update fixes the problem. We apologize for the inconvenience. It was discovered that the PAM pam_userdb module incorrectly used a case-insensitive method when comparing hashed passwords. A local attacker could possibly use this issue to make brute-force attacks easier. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2013-7041) Sebastian Krahmer discovered that the PAM pam_timestamp module incorrectly performed filtering. A local attacker could use this issue to create arbitrary files, or possibly bypass authentication. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2014-2583) Sebastien Macke discovered that the PAM pam_unix module incorrectly handled large passwords. A local attacker could possibly use this issue in certain environments to enumerate usernames or cause a denial of service. (CVE-2015-3238). 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 89997 published 2016-03-17 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/89997 title Ubuntu 12.04 LTS / 14.04 LTS / 15.10 : pam regression (USN-2935-2) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2018-1375.NASL description According to the version of the pam package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerability : - It was discovered that the _unix_run_helper_binary() function of PAM last seen 2020-06-01 modified 2020-06-02 plugin id 119066 published 2018-11-21 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/119066 title EulerOS Virtualization 2.5.1 : pam (EulerOS-SA-2018-1375) NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201605-05.NASL description The remote host is affected by the vulnerability described in GLSA-201605-05 (Linux-PAM: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Linux-PAM. Please review the CVE identifiers referenced below for details. Impact : Remote attackers could cause Denial of Service, conduct brute-force attacks, and conduct username enumeration. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 91378 published 2016-05-31 reporter This script is Copyright (C) 2016 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/91378 title GLSA-201605-05 : Linux-PAM: Multiple vulnerabilities NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-2935-1.NASL description It was discovered that the PAM pam_userdb module incorrectly used a case-insensitive method when comparing hashed passwords. A local attacker could possibly use this issue to make brute-force attacks easier. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2013-7041) Sebastian Krahmer discovered that the PAM pam_timestamp module incorrectly performed filtering. A local attacker could use this issue to create arbitrary files, or possibly bypass authentication. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2014-2583) Sebastien Macke discovered that the PAM pam_unix module incorrectly handled large passwords. A local attacker could possibly use this issue in certain environments to enumerate usernames or cause a denial of service. (CVE-2015-3238). 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 89996 published 2016-03-17 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/89996 title Ubuntu 12.04 LTS / 14.04 LTS / 15.10 : pam vulnerabilities (USN-2935-1)
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References
- https://www.trustwave.com/Resources/Security-Advisories/Advisories/TWSL2015-011/?fid=6551
- http://rhn.redhat.com/errata/RHSA-2015-1640.html
- http://www.openwall.com/lists/oss-security/2015/06/25/13
- https://bugzilla.redhat.com/show_bug.cgi?id=1228571
- https://www.trustwave.com/Resources/SpiderLabs-Blog/Username-Enumeration-against-OpenSSH-SELinux-with-CVE-2015-3238/
- http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
- https://security.gentoo.org/glsa/201605-05
- http://www.securityfocus.com/bid/75428
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/161249.html
- http://www.ubuntu.com/usn/USN-2935-3
- http://www.ubuntu.com/usn/USN-2935-1
- http://www.ubuntu.com/usn/USN-2935-2
- http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161350.html