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

high Nessus Plugin ID 62013

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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.

Plugin Details

Severity: High

ID: 62013

File Name: debian_DSA-2542.nasl

Version: 1.13

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 9/10/2012

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

Vulnerability Information

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

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

Detections

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