RHEL 6 : glibc (RHSA-2011:0413)

high Nessus Plugin ID 53292

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Synopsis

The remote Red Hat host is missing one or more security updates for glibc.

Description

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2011:0413 advisory.

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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

Solution

Update the RHEL glibc package based on the guidance in RHSA-2011:0413.

Plugin Details

Severity: High

ID: 53292

File Name: redhat-RHSA-2011-0413.nasl

Version: 1.23

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 4/5/2011

Updated: 4/14/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.4

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

CVSS Score Source: CVE-2011-0536

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2011-1659

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:glibc-headers, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:redhat:enterprise_linux:glibc-utils, p-cpe:/a:redhat:enterprise_linux:glibc-common, p-cpe:/a:redhat:enterprise_linux:glibc-devel, p-cpe:/a:redhat:enterprise_linux:glibc-static, p-cpe:/a:redhat:enterprise_linux:glibc, p-cpe:/a:redhat:enterprise_linux:nscd

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/4/2011

Vulnerability Publication Date: 1/7/2011

Reference Information

CVE: CVE-2011-0536, CVE-2011-1071, CVE-2011-1095, CVE-2011-1658, CVE-2011-1659

BID: 46563, 64465

CWE: 426

RHSA: 2011:0413

Detections

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