Debian DSA-2122-1 : glibc - missing input sanitization

High Nessus Plugin ID 50309

Synopsis

The remote Debian host is missing a security-related update.

Description

Ben Hawkes and Tavis Ormandy discovered that the dynamic loader in GNU libc allows local users to gain root privileges using a crafted LD_AUDIT environment variable.

Solution

Upgrade the glibc packages.

For the stable distribution (lenny), this problem has been fixed in version 2.7-18lenny6.

For the upcoming stable distribution (squeeze), this problem has been fixed in version 2.11.2-6+squeeze1 of the eglibc package.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=600667

https://www.debian.org/security/2010/dsa-2122

Plugin Details

Severity: High

ID: 50309

File Name: debian_DSA-2122.nasl

Version: 1.16

Type: local

Agent: unix

Published: 2010/10/24

Updated: 2019/08/02

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.2

Temporal Score: 6

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

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:glibc, cpe:/o:debian:debian_linux:5.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2010/10/22

Exploitable With

CANVAS (CANVAS)

Core Impact

Metasploit (glibc LD_AUDIT Arbitrary DSO Load Privilege Escalation)

Reference Information

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

BID: 44154

DSA: 2122