Debian DSA-2542-1 : qemu-kvm - multiple vulnerabilities

high Nessus Plugin ID 62013

Synopsis

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

Description

Multiple vulnerabilities have been discovered in KVM, a full virtualization solution on x86 hardware. The Common Vulnerabilities and Exposures project identifies the following problems :

- CVE-2012-2652 :
The snapshot mode of QEMU (-snapshot) incorrectly handles temporary files used to store the current state, making it vulnerable to symlink attacks (including arbitrary file overwriting and guest information disclosure) due to a race condition.

- CVE-2012-3515 :
QEMU does not properly handle VT100 escape sequences when emulating certain devices with a virtual console backend. An attacker within a guest with access to the vulnerable virtual console could overwrite memory of QEMU and escalate privileges to that of the qemu process.

Solution

Upgrade the qemu-kvm packages.

For the stable distribution (squeeze), these problems have been fixed in version 0.12.5+dfsg-5+squeeze9.

See Also

https://security-tracker.debian.org/tracker/CVE-2012-2652

https://security-tracker.debian.org/tracker/CVE-2012-3515

https://packages.debian.org/source/squeeze/qemu-kvm

https://www.debian.org/security/2012/dsa-2542

Plugin Details

Severity: High

ID: 62013

File Name: debian_DSA-2542.nasl

Version: 1.13

Type: local

Agent: unix

Published: 9/10/2012

Updated: 1/11/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information

VPR

Risk Factor: Medium

Score: 6

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:qemu-kvm, cpe:/o:debian:debian_linux:6.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/8/2012

Reference Information

CVE: CVE-2012-2652, CVE-2012-3515

BID: 53725, 55413

DSA: 2542