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

high Nessus Plugin ID 50309

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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: 1.17

Type: local

Agent: unix

Published: 10/24/2010

Updated: 1/4/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.9

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A: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: 10/22/2010

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