Debian DSA-3142-1 : eglibc - security update

high Nessus Plugin ID 81029
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Synopsis

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

Description

Several vulnerabilities have been fixed in eglibc, Debian's version of the GNU C library :

- CVE-2015-0235 Qualys discovered that the gethostbyname and gethostbyname2 functions were subject to a buffer overflow if provided with a crafted IP address argument.
This could be used by an attacker to execute arbitrary code in processes which called the affected functions.

The original glibc bug was reported by Peter Klotz.

- CVE-2014-7817 Tim Waugh of Red Hat discovered that the WRDE_NOCMD option of the wordexp function did not suppress command execution in all cases. This allows a context-dependent attacker to execute shell commands.

- CVE-2012-6656 CVE-2014-6040 The charset conversion code for certain IBM multi-byte code pages could perform an out-of-bounds array access, causing the process to crash. In some scenarios, this allows a remote attacker to cause a persistent denial of service.

Solution

Upgrade the eglibc packages.

For the stable distribution (wheezy), these problems have been fixed in version 2.13-38+deb7u7.

For the upcoming stable distribution (jessie) and the unstable distribution (sid), the CVE-2015-0235 issue has been fixed in version 2.18-1 of the glibc package.

See Also

https://security-tracker.debian.org/tracker/CVE-2015-0235

https://security-tracker.debian.org/tracker/CVE-2014-7817

https://security-tracker.debian.org/tracker/CVE-2012-6656

https://security-tracker.debian.org/tracker/CVE-2014-6040

https://security-tracker.debian.org/tracker/CVE-2015-0235

http://www.debian.org/security/2015/dsa-3142

Plugin Details

Severity: High

ID: 81029

File Name: debian_DSA-3142.nasl

Version: 1.19

Type: local

Agent: unix

Published: 1/28/2015

Updated: 1/11/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Critical

Score: 9.2

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 6.6

Vector: AV:N/AC:H/Au:N/C:C/I:C/A:C

Temporal Vector: E:H/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:eglibc, cpe:/o:debian:debian_linux:7.0

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: 1/27/2015

Exploitable With

Core Impact

Metasploit (Exim GHOST (glibc gethostbyname) Buffer Overflow)

Reference Information

CVE: CVE-2012-6656, CVE-2014-6040, CVE-2014-7817, CVE-2015-0235

BID: 69472, 71216, 72325

CERT: 967332

DSA: 3142