Vulnerabilities > CVE-2014-2583 - Path Traversal vulnerability in Linux-Pam 1.1.8

047910
CVSS 5.8 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
NONE
network
linux-pam
CWE-22
nessus
NVD
Published: 2014-04-10
Updated: 2019-01-03

Summary

Multiple directory traversal vulnerabilities in pam_timestamp.c in the pam_timestamp module for Linux-PAM (aka pam) 1.1.8 allow local users to create arbitrary files or possibly bypass authentication via a .. (dot dot) in the (1) PAM_RUSER value to the get_ruser function or (2) PAM_TTY value to the check_tty function, which is used by the format_timestamp_name function.

Vulnerable Configurations

Part Description Count
Application
Linux-Pam
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Relative Path Traversal
    An attacker exploits a weakness in input validation on the target by supplying a specially constructed path utilizing dot and slash characters for the purpose of obtaining access to arbitrary files or resources. An attacker modifies a known path on the target in order to reach material that is not available through intended channels. These attacks normally involve adding additional path separators (/ or \) and/or dots (.), or encodings thereof, in various combinations in order to reach parent directories or entirely separate trees of the target's directory structure.
  • Directory Traversal
    An attacker with access to file system resources, either directly or via application logic, will use various file path specification or navigation mechanisms such as ".." in path strings and absolute paths to extend their range of access to inappropriate areas of the file system. The attacker attempts to either explore the file system for recon purposes or access directories and files that are intended to be restricted from their access. Exploring the file system can be achieved through constructing paths presented to directory listing programs, such as "ls" and 'dir', or through specially crafted programs that attempt to explore the file system. The attacker engaging in this type of activity is searching for information that can be used later in a more exploitive attack. Access to restricted directories or files can be achieved through modification of path references utilized by system applications.
  • File System Function Injection, Content Based
    An attack of this type exploits the host's trust in executing remote content including binary files. The files are poisoned with a malicious payload (targeting the file systems accessible by the target software) by the attacker and may be passed through standard channels such as via email, and standard web content like PDF and multimedia files. The attacker exploits known vulnerabilities or handling routines in the target processes. Vulnerabilities of this type have been found in a wide variety of commercial applications from Microsoft Office to Adobe Acrobat and Apple Safari web browser. When the attacker knows the standard handling routines and can identify vulnerabilities and entry points they can be exploited by otherwise seemingly normal content. Once the attack is executed, the attackers' program can access relative directories such as C:\Program Files or other standard system directories to launch further attacks. In a worst case scenario, these programs are combined with other propagation logic and work as a virus.
  • Using Slashes and URL Encoding Combined to Bypass Validation Logic
    This attack targets the encoding of the URL combined with the encoding of the slash characters. An attacker can take advantage of the multiple way of encoding an URL and abuse the interpretation of the URL. An URL may contain special character that need special syntax handling in order to be interpreted. Special characters are represented using a percentage character followed by two digits representing the octet code of the original character (%HEX-CODE). For instance US-ASCII space character would be represented with %20. This is often referred as escaped ending or percent-encoding. Since the server decodes the URL from the requests, it may restrict the access to some URL paths by validating and filtering out the URL requests it received. An attacker will try to craft an URL with a sequence of special characters which once interpreted by the server will be equivalent to a forbidden URL. It can be difficult to protect against this attack since the URL can contain other format of encoding such as UTF-8 encoding, Unicode-encoding, etc.
  • Manipulating Input to File System Calls
    An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.

Nessus

  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-2935-3.NASL
    descriptionUSN-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 seen2020-06-01
    modified2020-06-02
    plugin id90021
    published2016-03-18
    reporterUbuntu Security Notice (C) 2016-2019 Canonical, Inc. / NASL script (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/90021
    titleUbuntu 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 familySuSE Local Security Checks
    NASL idSUSE_11_PAM-140410.NASL
    descriptionThis update changes the broken default behavior of pam_pwhistory to not enforce checks when the root user requests password changes. In order to enforce pwhistory checks on the root user, the
    last seen2020-06-05
    modified2014-05-13
    plugin id73979
    published2014-05-13
    reporterThis script is Copyright (C) 2014-2020 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/73979
    titleSuSE 11.3 Security Update : pam (SAT Patch Number 9119)
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from SuSE 11 update information. The text itself is
# copyright (C) Novell, Inc.
#

if (NASL_LEVEL < 3000) exit(0);

include("compat.inc");

if (description)
{
  script_id(73979);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2014-2583");

  script_name(english:"SuSE 11.3 Security Update : pam (SAT Patch Number 9119)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SuSE 11 host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update changes the broken default behavior of pam_pwhistory to
not enforce checks when the root user requests password changes. In
order to enforce pwhistory checks on the root user, the
'enforce_for_root' parameter needs to be set for the pam_pwhistory.so
module.

This pam update fixes the following security and non-security issues :

  - Fixed pam_timestamp path injection problem.
    (CVE-2014-2583). (bnc#870433)

  - Fixed pam_pwhistory root password enforcement when
    resetting non-root user's password. (bnc#848417)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=848417"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=870433"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2014-2583.html"
  );
  script_set_attribute(attribute:"solution", value:"Apply SAT patch number 9119.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:11:pam");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:11:pam-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:11:pam-doc");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:11");

  script_set_attribute(attribute:"patch_publication_date", value:"2014/04/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/05/13");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2020 Tenable Network Security, Inc.");
  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)11") audit(AUDIT_OS_NOT, "SuSE 11");
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 11", cpu);

pl = get_kb_item("Host/SuSE/patchlevel");
if (isnull(pl) || int(pl) != 3) audit(AUDIT_OS_NOT, "SuSE 11.3");


flag = 0;
if (rpm_check(release:"SLED11", sp:3, cpu:"i586", reference:"pam-1.1.5-0.12.1")) flag++;
if (rpm_check(release:"SLED11", sp:3, cpu:"i586", reference:"pam-doc-1.1.5-0.12.1")) flag++;
if (rpm_check(release:"SLED11", sp:3, cpu:"x86_64", reference:"pam-1.1.5-0.12.1")) flag++;
if (rpm_check(release:"SLED11", sp:3, cpu:"x86_64", reference:"pam-32bit-1.1.5-0.12.1")) flag++;
if (rpm_check(release:"SLED11", sp:3, cpu:"x86_64", reference:"pam-doc-1.1.5-0.12.1")) flag++;
if (rpm_check(release:"SLES11", sp:3, reference:"pam-1.1.5-0.12.1")) flag++;
if (rpm_check(release:"SLES11", sp:3, reference:"pam-doc-1.1.5-0.12.1")) flag++;
if (rpm_check(release:"SLES11", sp:3, cpu:"s390x", reference:"pam-32bit-1.1.5-0.12.1")) flag++;
if (rpm_check(release:"SLES11", sp:3, cpu:"x86_64", reference:"pam-32bit-1.1.5-0.12.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2014-16350.NASL
    descriptionUpdate fixing minor security issues and bugs. 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 seen2020-03-17
    modified2014-12-18
    plugin id80090
    published2014-12-18
    reporterThis script is Copyright (C) 2014-2020 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/80090
    titleFedora 20 : pam-1.1.8-2.fc20 (2014-16350)
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2014-16350.
#

include("compat.inc");

if (description)
{
  script_id(80090);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2013-7041", "CVE-2014-2583");
  script_xref(name:"FEDORA", value:"2014-16350");

  script_name(english:"Fedora 20 : pam-1.1.8-2.fc20 (2014-16350)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Update fixing minor security issues and bugs.

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."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1038555"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1080243"
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2014-December/146370.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?42543731"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected pam package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:pam");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:20");

  script_set_attribute(attribute:"patch_publication_date", value:"2014/12/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/12/18");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2020 Tenable Network Security, Inc.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/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/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^20([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 20.x", "Fedora " + 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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);

flag = 0;
if (rpm_check(release:"FC20", reference:"pam-1.1.8-2.fc20")) 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 familyNewStart CGSL Local Security Checks
    NASL idNEWSTART_CGSL_NS-SA-2019-0198_PAM.NASL
    descriptionThe remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has pam packages installed that are affected by multiple vulnerabilities: - pam_unix.so in Linux-PAM 0.99.7.0 allows context- dependent attackers to log into accounts whose password hash, as stored in /etc/passwd or /etc/shadow, has only two characters. (CVE-2007-0003) - Linux-PAM before 1.0.4 does not enforce the minimum password age (MINDAYS) as specified in /etc/shadow, which allows local users to bypass intended security policy and change their passwords sooner than specified. (CVE-2009-0579) - The run_coprocess function in pam_xauth.c in the pam_xauth module in Linux-PAM (aka pam) before 1.1.2 does not check the return values of the setuid, setgid, and setgroups system calls, which might allow local users to read arbitrary files by executing a program that relies on the pam_xauth PAM check. (CVE-2010-3316) - The (1) pam_env and (2) pam_mail modules in Linux-PAM (aka pam) before 1.1.2 use root privileges during read access to files and directories that belong to arbitrary user accounts, which might allow local users to obtain sensitive information by leveraging this filesystem activity, as demonstrated by a symlink attack on the .pam_environment file in a user
    last seen2020-06-01
    modified2020-06-02
    plugin id129937
    published2019-10-15
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/129937
    titleNewStart CGSL CORE 5.04 / MAIN 5.04 : pam Multiple Vulnerabilities (NS-SA-2019-0198)
    code
    #
# (C) Tenable Network Security, Inc.
#

# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2019-0198. The text
# itself is copyright (C) ZTE, Inc.

include("compat.inc");

if (description)
{
  script_id(129937);
  script_version("1.3");
  script_cvs_date("Date: 2019/10/17 14:31:05");

  script_cve_id(
    "CVE-2007-0003",
    "CVE-2009-0579",
    "CVE-2010-3316",
    "CVE-2010-3435",
    "CVE-2010-3853",
    "CVE-2013-7041",
    "CVE-2014-2583"
  );

  script_name(english:"NewStart CGSL CORE 5.04 / MAIN 5.04 : pam Multiple Vulnerabilities (NS-SA-2019-0198)");

  script_set_attribute(attribute:"synopsis", value:
"The remote machine is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has pam packages installed that are affected by
multiple vulnerabilities:

  - pam_unix.so in Linux-PAM 0.99.7.0 allows context-
    dependent attackers to log into accounts whose password
    hash, as stored in /etc/passwd or /etc/shadow, has only
    two characters. (CVE-2007-0003)

  - Linux-PAM before 1.0.4 does not enforce the minimum
    password age (MINDAYS) as specified in /etc/shadow,
    which allows local users to bypass intended security
    policy and change their passwords sooner than specified.
    (CVE-2009-0579)

  - The run_coprocess function in pam_xauth.c in the
    pam_xauth module in Linux-PAM (aka pam) before 1.1.2
    does not check the return values of the setuid, setgid,
    and setgroups system calls, which might allow local
    users to read arbitrary files by executing a program
    that relies on the pam_xauth PAM check. (CVE-2010-3316)

  - The (1) pam_env and (2) pam_mail modules in Linux-PAM
    (aka pam) before 1.1.2 use root privileges during read
    access to files and directories that belong to arbitrary
    user accounts, which might allow local users to obtain
    sensitive information by leveraging this filesystem
    activity, as demonstrated by a symlink attack on the
    .pam_environment file in a user's home directory.
    (CVE-2010-3435)

  - pam_namespace.c in the pam_namespace module in Linux-PAM
    (aka pam) before 1.1.3 uses the environment of the
    invoking application or service during execution of the
    namespace.init script, which might allow local users to
    gain privileges by running a setuid program that relies
    on the pam_namespace PAM check, as demonstrated by the
    sudo program. (CVE-2010-3853)

  - The pam_userdb module for Pam uses a case-insensitive
    method to compare hashed passwords, which makes it
    easier for attackers to guess the password via a brute
    force attack. (CVE-2013-7041)

  - Multiple directory traversal vulnerabilities in
    pam_timestamp.c in the pam_timestamp module for Linux-
    PAM (aka pam) 1.1.8 allow local users to create
    arbitrary files or possibly bypass authentication via a
    .. (dot dot) in the (1) PAM_RUSER value to the get_ruser
    function or (2) PAM_TTY value to the check_tty function,
    which is used by the format_timestamp_name function.
    (CVE-2014-2583)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"http://security.gd-linux.com/notice/NS-SA-2019-0198");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL pam packages. Note that updated packages may not be available yet. Please contact ZTE for
more information.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2007-0003");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_cwe_id(264);

  script_set_attribute(attribute:"vuln_publication_date", value:"2007/01/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/10/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/15");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"NewStart CGSL Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/ZTE-CGSL/release", "Host/ZTE-CGSL/rpm-list", "Host/cpu");

  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/ZTE-CGSL/release");
if (isnull(release) || release !~ "^CGSL (MAIN|CORE)") audit(AUDIT_OS_NOT, "NewStart Carrier Grade Server Linux");

if (release !~ "CGSL CORE 5.04" &&
    release !~ "CGSL MAIN 5.04")
  audit(AUDIT_OS_NOT, 'NewStart CGSL CORE 5.04 / NewStart CGSL MAIN 5.04');

if (!get_kb_item("Host/ZTE-CGSL/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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "NewStart Carrier Grade Server Linux", cpu);

flag = 0;

pkgs = {
  "CGSL CORE 5.04": [
    "pam-1.1.8-18.el7.cgslv5.0.3.g0dd876c.lite",
    "pam-debuginfo-1.1.8-18.el7.cgslv5.0.3.g0dd876c.lite",
    "pam-devel-1.1.8-18.el7.cgslv5.0.3.g0dd876c.lite",
    "pam-lang-1.1.8-18.el7.cgslv5.0.3.g0dd876c.lite"
  ],
  "CGSL MAIN 5.04": [
    "pam-1.1.8-18.el7.cgslv5.0.1.ga1d75e3",
    "pam-debuginfo-1.1.8-18.el7.cgslv5.0.1.ga1d75e3",
    "pam-devel-1.1.8-18.el7.cgslv5.0.1.ga1d75e3"
  ]
};
pkg_list = pkgs[release];

foreach (pkg in pkg_list)
  if (rpm_check(release:"ZTE " + release, reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "pam");
}
  • NASL familyAmazon Linux Local Security Checks
    NASL idALA_ALAS-2014-354.NASL
    descriptionMultiple directory traversal vulnerabilities in pam_timestamp.c in the pam_timestamp module for Linux-PAM (aka pam) 1.1.8 allow local users to create aribitrary files or possibly bypass authentication via a .. (dot dot) in the (1) PAM_RUSER value to the get_ruser function or (2) PAM_TTY value to the check_tty funtion, which is used by the format_timestamp_name function. The pam_userdb module for Pam uses a case-insensitive method to compare hashed passwords, which makes it easier for attackers to guess the password via a brute-force attack.
    last seen2020-06-01
    modified2020-06-02
    plugin id78297
    published2014-10-12
    reporterThis script is Copyright (C) 2014-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/78297
    titleAmazon Linux AMI : pam (ALAS-2014-354)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2014-354.
#

include("compat.inc");

if (description)
{
  script_id(78297);
  script_version("1.3");
  script_cvs_date("Date: 2018/04/18 15:09:35");

  script_cve_id("CVE-2013-7041", "CVE-2014-2583");
  script_xref(name:"ALAS", value:"2014-354");

  script_name(english:"Amazon Linux AMI : pam (ALAS-2014-354)");
  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:
"Multiple directory traversal vulnerabilities in pam_timestamp.c in the
pam_timestamp module for Linux-PAM (aka pam) 1.1.8 allow local users
to create aribitrary files or possibly bypass authentication via a ..
(dot dot) in the (1) PAM_RUSER value to the get_ruser function or (2)
PAM_TTY value to the check_tty funtion, which is used by the
format_timestamp_name function.

The pam_userdb module for Pam uses a case-insensitive method to
compare hashed passwords, which makes it easier for attackers to guess
the password via a brute-force attack."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://alas.aws.amazon.com/ALAS-2014-354.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:P/A:N");

  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:"2014/06/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/10/12");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2018 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-1.1.8-9.29.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"pam-debuginfo-1.1.8-9.29.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"pam-devel-1.1.8-9.29.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 familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-2935-2.NASL
    descriptionUSN-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 seen2020-06-01
    modified2020-06-02
    plugin id89997
    published2016-03-17
    reporterUbuntu Security Notice (C) 2016-2019 Canonical, Inc. / NASL script (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/89997
    titleUbuntu 12.04 LTS / 14.04 LTS / 15.10 : pam regression (USN-2935-2)
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201605-05.NASL
    descriptionThe 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 seen2020-06-01
    modified2020-06-02
    plugin id91378
    published2016-05-31
    reporterThis script is Copyright (C) 2016 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/91378
    titleGLSA-201605-05 : Linux-PAM: Multiple vulnerabilities
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-2935-1.NASL
    descriptionIt 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 seen2020-06-01
    modified2020-06-02
    plugin id89996
    published2016-03-17
    reporterUbuntu Security Notice (C) 2016-2019 Canonical, Inc. / NASL script (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/89996
    titleUbuntu 12.04 LTS / 14.04 LTS / 15.10 : pam vulnerabilities (USN-2935-1)

Seebug

bulletinFamilyexploit
descriptionCVE ID:CVE-2014-2583 Linux-PAM是一款基于Linux的插入式验证模块。 通过PAM_RUSER和PAM_TTY传递的输入在用于创建文件时缺少校验，允许攻击者利用漏洞通过特制的PAM_RUSER或PAM_TTY值来绕过验证或创建任意文件。 0 Linux-PAM 1.x 目前厂商已经发布了升级补丁以修复漏洞，请下载使用： https://git.fedorahosted.org/cgit/linux-pam.git/commit/?id=Linux-PAM-1_1_8-32-g9dcead8
idSSV:62120
last seen2017-11-19
modified2014-04-10
published2014-04-10
reporterRoot
titleLinux-PAM &quot;pam_timestamp&quot;模块目录遍历漏洞

References