SB2011110307 - SUSE Linux update for pam

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Main Vulnerability Database SB2011110307

SB2011110307 - SUSE Linux update for pam

Published: November 3, 2011 Updated: May 9, 2023

Security Bulletin ID SB2011110307
Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 33% Low 67%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Input validation error (CVE-ID: CVE-2010-3316)

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

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.


2) Stack-based buffer overflow (CVE-ID: CVE-2011-3148)

The vulnerability allows a local user to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the _assemble_line() function in modules/pam_env/pam_env.c when processing a long string of white spaces at the beginning of the ~/.pam_environment file. A local user can trigger a stack-based buffer overflow and execute arbitrary code on the target system.


3) Buffer overflow (CVE-ID: CVE-2011-3149)

The vulnerability allows a local user to perform service disruption.

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).


Remediation

Install update from vendor's website.

References