Debian DSA-3285-1 : qemu-kvm - security update

high Nessus Plugin ID 84168
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Synopsis

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

Description

Several vulnerabilities were discovered in qemu-kvm, a full virtualization solution on x86 hardware.

- CVE-2015-3209 Matt Tait of Google's Project Zero security team discovered a flaw in the way QEMU's AMD PCnet Ethernet emulation handles multi-TMD packets with a length above 4096 bytes. A privileged guest user in a guest with an AMD PCNet ethernet card enabled can potentially use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process.

- CVE-2015-4037 Kurt Seifried of Red Hat Product Security discovered that QEMU's user mode networking stack uses predictable temporary file names when the -smb option is used. An unprivileged user can use this flaw to cause a denial of service.

Solution

Upgrade the qemu-kvm packages.

For the oldstable distribution (wheezy), these problems have been fixed in version 1.1.2+dfsg-6+deb7u8.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=788460

https://security-tracker.debian.org/tracker/CVE-2015-3209

https://security-tracker.debian.org/tracker/CVE-2015-4037

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

https://www.debian.org/security/2015/dsa-3285

Plugin Details

Severity: High

ID: 84168

File Name: debian_DSA-3285.nasl

Version: 2.10

Type: local

Agent: unix

Published: 6/15/2015

Updated: 1/11/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.8

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

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

Vulnerability Information

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/13/2015

Reference Information

CVE: CVE-2015-3209, CVE-2015-4037

BID: 74809, 75123

DSA: 3285