Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2012.0858
xen-qemu-dm-4.0 security update
10 September 2012
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AusCERT Security Bulletin Summary
---------------------------------
Product: xen-qemu-dm-4.0
Publisher: Debian
Operating System: Debian GNU/Linux 6
Impact/Access: Increased Privileges -- Existing Account
Access Privileged Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2012-4411 CVE-2012-3515
Reference: ESB-2012.0849
ESB-2012.0844
ESB-2012.0843
ESB-2012.0842
Original Bulletin:
http://www.debian.org/security/2012/dsa-2543
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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
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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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