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

High Nessus Plugin ID 60891


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


It was discovered that the glibc dynamic linker/loader did not handle the $ORIGIN dynamic string token set in the LD_AUDIT environment variable securely. A local attacker with write access to a file system containing setuid or setgid binaries could use this flaw to escalate their privileges. (CVE-2010-3847)

It was discovered that the glibc dynamic linker/loader did not perform sufficient safety checks when loading dynamic shared objects (DSOs) to provide callbacks for its auditing API during the execution of privileged programs. A local attacker could use this flaw to escalate their privileges via a carefully-chosen system DSO library containing unsafe constructors. (CVE-2010-3856)

This update also fixes the following bugs :

- Previously, the generic implementation of the strstr() and memmem() functions did not handle certain periodic patterns correctly and could find a false positive match. This error has been fixed, and both functions now work as expected. (BZ#643341)

- The 'TCB_ALIGNMENT' value has been increased to 32 bytes to prevent applications from crashing during symbol resolution on 64-bit systems with support for Intel AVX vector registers. (BZ#643343)


Update the affected packages.

See Also

Plugin Details

Severity: High

ID: 60891

File Name: sl_20101110_glibc_on_SL6_x.nasl

Version: $Revision: 1.3 $

Type: local

Agent: unix

Published: 2012/08/01

Modified: 2018/02/12

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/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: 2010/11/10

Exploitable With


Core Impact

Metasploit (glibc LD_AUDIT Arbitrary DSO Load Privilege Escalation)

Reference Information

CVE: CVE-2010-3847, CVE-2010-3856