Operating System:

[Debian]

Published:

10 September 2012

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2012.0860
                           qemu security update
                             10 September 2012

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

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

Product:           qemu
Publisher:         Debian
Operating System:  Debian GNU/Linux 6
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-2012.0857
                   ESB-2012.0849
                   ESB-2012.0844
                   ESB-2012.0843
                   ESB-2012.0842

Original Bulletin: 
   http://www.debian.org/security/2012/dsa-2545

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Debian Security Advisory DSA-2545-1                   security@debian.org
http://www.debian.org/security/                          Raphael Geissert
September 08, 2012                     http://www.debian.org/security/faq
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Package        : qemu
Vulnerability  : multiple
Problem type   : local
Debian-specific: no
CVE ID         : CVE-2012-2652 CVE-2012-3515

Multiple vulnerabilities have been discovered in qemu, a fast processor
emulator. 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-3squeeze2.

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

We recommend that you upgrade your qemu 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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