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Debian Security Advisory 2543-1

Debian Security Advisory 2543-1
Posted Sep 10, 2012
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2543-1 - Multiple vulnerabilities have been discovered in xen-qemu-dm-4.0, the Xen Qemu Device Model virtual machine hardware emulator.

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2012-3515, CVE-2012-4411
SHA-256 | 6c76faea6ac6cbfa1c9eda1f30e879928782ec2b1071c8550ad28724c9bf136a

Debian Security Advisory 2543-1

Change Mirror Download
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- -------------------------------------------------------------------------
Debian Security Advisory DSA-2543-1 security@debian.org
http://www.debian.org/security/ Raphael Geissert
September 08, 2012 http://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : xen-qemu-dm-4.0
Vulnerability : multiple
Problem type : local
Debian-specific: no
CVE ID : CVE-2012-3515 CVE-2012-4411

Multiple vulnerabilities have been discovered in xen-qemu-dm-4.0, the Xen
Qemu Device Model virtual machine hardware emulator. The Common
Vulnerabilities and Exposures project identifies the following problems:

CVE-2012-3515:

The device model for HVM domains 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 the device
model and escalate privileges to that of the device model process.

CVE-2012-4411:

The qemu monitor was enabled by default, allowing administrators of
a guest to access resources of the host, possibly escalate privileges
or access resources belonging to another guest.

For the stable distribution (squeeze), these problems have been fixed in
version 4.0.1-2+squeeze2.

The testing distribution (wheezy), and the unstable distribution (sid),
no longer contain this package.

We recommend that you upgrade your xen-qemu-dm-4.0 packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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