Scientific Linux Security Update : glibc on SL5.x,SL6.x i386/x86_64

Medium Nessus Plugin ID 61008

Synopsis

The remote Scientific Linux host is missing one or more security updates.

Description

The glibc packages contain the standard C libraries used by multiple programs on the system. These packages contain the standard C and the standard math libraries. Without these two libraries, a Linux system cannot function properly.

The fix for CVE-2010-3847 introduced a regression in the way the dynamic loader expanded the $ORIGIN dynamic string token specified in the RPATH and RUNPATH entries in the ELF library header. A local attacker could use this flaw to escalate their privileges via a setuid or setgid program using such a library. (CVE-2011-0536)

It was discovered that the glibc fnmatch() function did not properly restrict the use of alloca(). If the function was called on sufficiently large inputs, it could cause an application using fnmatch() to crash or, possibly, execute arbitrary code with the privileges of the application. (CVE-2011-1071)

It was discovered that the locale command did not produce properly escaped output as required by the POSIX specification. If an attacker were able to set the locale environment variables in the environment of a script that performed shell evaluation on the output of the locale command, and that script were run with different privileges than the attacker's, it could execute arbitrary code with the privileges of the script. (CVE-2011-1095)

All users should upgrade to these updated packages, which contain backported patches to correct these issues.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?500923b0

Plugin Details

Severity: Medium

ID: 61008

File Name: sl_20110404_glibc_on_SL5_x.nasl

Version: 1.4

Type: local

Agent: unix

Published: 2012/08/01

Updated: 2018/12/31

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 6.9

Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C

Vulnerability Information

CPE: x-cpe:/o:fermilab:scientific_linux

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2011/04/04

Exploitable With

CANVAS (CANVAS)

Core Impact

Metasploit (glibc "$ORIGIN" Expansion Privilege Escalation)

Reference Information

CVE: CVE-2010-3847, CVE-2011-0536, CVE-2011-1071, CVE-2011-1095