The remote MiracleLinux 4 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2013-122:01 advisory.

    PAM (Pluggable Authentication Modules) is a system security tool that allows system administrators to set     authentication policy without having to recompile programs that handle authentication.
    Security issues fixed with this release:
     CVE-2011-3148     Stack-based buffer overflow in the _assemble_line function in modules/pam_env/pam_env.c in Linux-PAM (aka     pam) before 1.1.5 allows local users to cause a denial of service (crash) and possibly execute arbitrary     code via a long string of white spaces at the beginning of the ~/.pam_environment file.
     CVE-2011-3149     The _expand_arg function in the pam_env module (modules/pam_env/pam_env.c) in Linux-PAM (aka pam) before     1.1.5 does not properly handle when environment variable expansion can overflow, which allows local users     to cause a denial of service (CPU consumption).

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The pam_env module is vulnerable to a stack overflow (CVE-2011-3148) and a DoS condition (CVE-2011-3149) when parsing users .pam_environment files. Additionally a missing return value check inside pam_xauth has been fixed. (CVE-2010-3316)

The pam_env module is vulnerable to a stack overflow (CVE-2011-3148) and a DoS condition (CVE-2011-3149) when parsing users .pam_environment files.

Kees Cook discovered that the PAM pam_env module incorrectly handled certain malformed environment files. A local attacker could use this flaw to cause a denial of service, or possibly gain privileges. The default compiler options for affected releases should reduce the vulnerability to a denial of service. (CVE-2011-3148)

Kees Cook discovered that the PAM pam_env module incorrectly handled variable expansion. A local attacker could use this flaw to cause a denial of service. (CVE-2011-3149)

Stephane Chazelas discovered that the PAM pam_motd module incorrectly cleaned the environment during execution of the motd scripts. In certain environments, a local attacker could use this to execute arbitrary code as root, and gain privileges.

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.

The remote host is affected by the vulnerability described in GLSA-201206-31 (Linux-PAM: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Linux-PAM. Please       review the CVE identifiers referenced below for details.
  Impact :

    A local attacker could use specially crafted files to cause a buffer       overflow, possibly resulting in privilege escalation or Denial of       Service. Furthermore, a local attacker could execute specially crafted       programs or symlink attacks, possibly resulting in data loss or       disclosure of sensitive information.
  Workaround :

    There is no known workaround at this time.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
290011	MiracleLinux 4 : pam-1.1.1-13.AXS4 (AXSA:2013-122:01)	Nessus	Miracle Linux Local Security Checks	2026/1/16	2026/1/16	medium
56701	SuSE 10 Security Update : pam (ZYPP Patch Number 7815)	Nessus	SuSE Local Security Checks	2011/11/3	2021/1/19	medium
57126	SuSE 11.1 Security Update : pam (SAT Patch Number 5342)	Nessus	SuSE Local Security Checks	2011/12/13	2021/1/19	medium
75991	openSUSE Security Update : pam (openSUSE-SU-2011:1204-1)	Nessus	SuSE Local Security Checks	2014/6/13	2021/1/19	medium
56629	Ubuntu 8.04 LTS / 10.04 LTS / 10.10 / 11.04 / 11.10 : pam vulnerabilities (USN-1237-1)	Nessus	Ubuntu Local Security Checks	2011/10/25	2019/9/19	medium
59704	GLSA-201206-31 : Linux-PAM: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	2012/6/26	2021/1/6	high

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