The Mandriva Security Team published a new security update for Mandriva Linux. Here the announcement:

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Mandriva Linux Security Advisory MDKSA-2007:203
http://www.mandriva.com/security/
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Package : xen
Date : November 1, 2007
Affected: 2007.0, 2007.1, Corporate 4.0
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Problem Description:

Tavis Ormandy discovered a heap overflow flaw during video-to-video
copy operations in the Cirrus VGA extension code that is used in Xen.
A malicious local administrator of a guest domain could potentially
trigger this flaw and execute arbitrary code outside of the domain
(CVE-2007-1320).

Tavis Ormandy also discovered insufficient input validation leading to
a heap overflow in the NE2000 network driver in Xen. If the driver
is in use, a malicious local administrator of a guest domain could
potentially trigger this flaw and execute arbitrary code outside of
the domain (CVE-2007-1321, CVE-2007-5729, CVE-2007-5730).

Steve Kemp found that xen-utils used insecure temporary files within
the xenmon tool that could allow local users to truncate arbitrary
files (CVE-2007-3919).

Joris van Rantwijk discovered a flaw in Pygrub, which is used as a
boot loader for guest domains. A malicious local administrator of
a guest domain could create a carefully-crafted grub.conf file which
could trigger the execution of arbitrary code outside of that domain
(CVE-2007-4993).

Updated packages have been patched to prevent these issues.
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References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1320
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1321
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3919
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4993
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5729
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5730
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Updated Packages:

Mandriva Linux 2007.0:
70b7495f9eb6597b8dcff92a6a698a28 2007.0/i586/xen-3.0.3-0.20060703.3.1mdv2007.0.i586.rpm
c939b93cb67251235a9c8f2824609702 2007.0/SRPMS/xen-3.0.3-0.20060703.3.1mdv2007.0.src.rpm

Mandriva Linux 2007.0/X86_64:
f35d3563e67a0a887c439657b2e29afb 2007.0/x86_64/xen-3.0.3-0.20060703.3.1mdv2007.0.x86_64.rpm
c939b93cb67251235a9c8f2824609702 2007.0/SRPMS/xen-3.0.3-0.20060703.3.1mdv2007.0.src.rpm

Mandriva Linux 2007.1:
183ef09d8ed8171adc894cbb606f922f 2007.1/i586/xen-3.0.3-0.20060703.5.1mdv2007.1.i586.rpm
f4a0bfc9c6d5ae01664c8a906580b873 2007.1/SRPMS/xen-3.0.3-0.20060703.5.1mdv2007.1.src.rpm

Mandriva Linux 2007.1/X86_64:
c05336d0eef357b2b2c191286c4d679e 2007.1/x86_64/xen-3.0.3-0.20060703.5.1mdv2007.1.x86_64.rpm
f4a0bfc9c6d5ae01664c8a906580b873 2007.1/SRPMS/xen-3.0.3-0.20060703.5.1mdv2007.1.src.rpm

Corporate 4.0:
ec6876abb87e57d61257f3b3c6659c22 corporate/4.0/i586/xen-3.0.1-3.1.20060mlcs4.i586.rpm
72a302b77a88766cc43276e431dabf79 corporate/4.0/SRPMS/xen-3.0.1-3.1.20060mlcs4.src.rpm

Corporate 4.0/X86_64:
894c37bcf10d4ec8973ed11a5613aeb5 corporate/4.0/x86_64/xen-3.0.1-3.1.20060mlcs4.x86_64.rpm
72a302b77a88766cc43276e431dabf79 corporate/4.0/SRPMS/xen-3.0.1-3.1.20060mlcs4.src.rpm
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To upgrade automatically use MandrivaUpdate or urpmi. The verification
of md5 checksums and GPG signatures is performed automatically for you.

All packages are signed by Mandriva for security. You can obtain the
GPG public key of the Mandriva Security Team by executing:

gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98

You can view other update advisories for Mandriva Linux at:

http://www.mandriva.com/security/advisories

If you want to report vulnerabilities, please contact

security_(at)_mandriva.com
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Type Bits/KeyID Date User ID
pub 1024D/22458A98 2000-07-10 Mandriva Security Team
<security*mandriva.com>
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