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             AUSCERT External Security Bulletin Redistribution

                               ESB-2012.0857
                         qemu-kvm security update
                             10 September 2012

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           qemu-kvm
Publisher:         Debian
Operating System:  Debian GNU/Linux 6
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Increased Privileges      -- Existing Account
                   Access Privileged Data    -- Existing Account
                   Overwrite Arbitrary Files -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2012-3515 CVE-2012-2652 

Reference:         ESB-2012.0849
                   ESB-2012.0844
                   ESB-2012.0843
                   ESB-2012.0842

Original Bulletin: 
   http://www.debian.org/security/2012/dsa-2542

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Debian. It is recommended that administrators 
         running qemu-kvm check for an updated version of the software for 
         their operating system.

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Debian Security Advisory DSA-2542-1                   security@debian.org
http://www.debian.org/security/                          Raphael Geissert
September 08, 2012                     http://www.debian.org/security/faq
- - -------------------------------------------------------------------------

Package        : qemu-kvm
Vulnerability  : multiple
Problem type   : local
Debian-specific: no
CVE ID         : CVE-2012-2652 CVE-2012-3515

Multiple vulnerabilities have been discovered in qemu-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.

For the stable distribution (squeeze), these problems have been fixed in
version 0.12.5+dfsg-5+squeeze9.

For the testing distribution (wheezy), and the unstable distribution
(sid), these problems will been fixed soon.

We recommend that you upgrade your qemu-kvm 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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===========================================================================
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===========================================================================
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