Debian DSA-2632-1 : linux-2.6 - privilege escalation/denial of service

Medium Nessus Plugin ID 64881

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VPR Score: 7.4

Synopsis

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

Description

Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or privilege escalation. The Common Vulnerabilities and Exposures project identifies the following problems :

- CVE-2013-0231 Jan Beulich provided a fix for an issue in the Xen PCI backend drivers. Users of guests on a system using passed-through PCI devices can create a denial of service of the host system due to the use of non-ratelimited kernel log messages.

- CVE-2013-0871 Suleiman Souhlal and Salman Qazi of Google, with help from Aaron Durbin and Michael Davidson of Google, discovered an issue in the ptrace subsystem. Due to a race condition with PTRACE_SETREGS, local users can cause kernel stack corruption and execution of arbitrary code.

Solution

Upgrade the linux-2.6 and user-mode-linux packages.

For the stable distribution (squeeze), this problem has been fixed in version 2.6.32-48squeeze1.

The following matrix lists additional source packages that were rebuilt for compatibility with or to take advantage of this update :

Debian 6.0 (squeeze) user-mode-linux 2.6.32-1um-4+48squeeze1

See Also

https://security-tracker.debian.org/tracker/CVE-2013-0231

https://security-tracker.debian.org/tracker/CVE-2013-0871

https://packages.debian.org/source/squeeze/linux-2.6

https://www.debian.org/security/2013/dsa-2632

Plugin Details

Severity: Medium

ID: 64881

File Name: debian_DSA-2632.nasl

Version: 1.11

Type: local

Agent: unix

Published: 2013/02/26

Updated: 2020/03/12

Dependencies: 12634

Risk Information

Risk Factor: Medium

VPR Score: 7.4

CVSS v2.0

Base Score: 6.9

Temporal Score: 5.7

Vector: CVSS2#AV:L/AC:M/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:linux-2.6, cpe:/o:debian:debian_linux:6.0

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: 2013/02/25

Exploitable With

CANVAS (CANVAS)

Reference Information

CVE: CVE-2013-0231, CVE-2013-0871

BID: 57740, 57986

DSA: 2632