Debian DSA-3348-1 : qemu - security update

medium Nessus Plugin ID 85754

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Synopsis

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

Description

Several vulnerabilities were discovered in qemu, a fast processor emulator.

- CVE-2015-3214 Matt Tait of Google's Project Zero security team discovered a flaw in the QEMU i8254 PIT emulation. A privileged guest user in a guest with QEMU PIT emulation enabled could potentially use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process.

- CVE-2015-5154 Kevin Wolf of Red Hat discovered a heap buffer overflow flaw in the IDE subsystem in QEMU while processing certain ATAPI commands. A privileged guest user in a guest with the CDROM drive enabled could potentially use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process.

- CVE-2015-5165 Donghai Zhu discovered that the QEMU model of the RTL8139 network card did not sufficiently validate inputs in the C+ mode offload emulation, allowing a malicious guest to read uninitialized memory from the QEMU process's heap.

- CVE-2015-5225 Mr Qinghao Tang from QIHU 360 Inc. and Mr Zuozhi from Alibaba Inc discovered a buffer overflow flaw in the VNC display driver leading to heap memory corruption. A privileged guest user could use this flaw to mount a denial of service (QEMU process crash), or potentially to execute arbitrary code on the host with the privileges of the hosting QEMU process.

- CVE-2015-5745 A buffer overflow vulnerability was discovered in the way QEMU handles the virtio-serial device. A malicious guest could use this flaw to mount a denial of service (QEMU process crash).

Solution

Upgrade the qemu packages.

For the oldstable distribution (wheezy), these problems have been fixed in version 1.1.2+dfsg-6+deb7u9. The oldstable distribution is only affected by CVE-2015-5165 and CVE-2015-5745.

For the stable distribution (jessie), these problems have been fixed in version 1:2.1+dfsg-12+deb8u2.

Plugin Details

Severity: Medium

ID: 85754

File Name: debian_DSA-3348.nasl

Version: 2.10

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 9/3/2015

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.8

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:qemu, cpe:/o:debian:debian_linux:7.0, cpe:/o:debian:debian_linux:8.0

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: 9/2/2015

Vulnerability Publication Date: 8/12/2015

Reference Information

CVE: CVE-2015-3214, CVE-2015-5154, CVE-2015-5165, CVE-2015-5225, CVE-2015-5745

DSA: 3348

Detections

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