Bug 821676 (CVE-2012-2625) - CVE-2012-2625 xen: pv bootloader doesn't check the size of the bzip2 or lzma compressed kernel
Summary: CVE-2012-2625 xen: pv bootloader doesn't check the size of the bzip2 or lzma ...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2012-2625
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20120504,repor...
Depends On: 818412 821704 821705
Blocks: 821701
TreeView+ depends on / blocked
 
Reported: 2012-05-15 10:36 UTC by Petr Matousek
Modified: 2019-06-08 19:07 UTC (History)
8 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2013-08-24 13:45:45 UTC


Attachments (Terms of Use)


Links
System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2012:1130 normal SHIPPED_LIVE Moderate: xen security update 2012-07-31 22:44:37 UTC

Description Petr Matousek 2012-05-15 10:36:33 UTC
The pv bootloader doesn't check the size of a bzip2 or lzma compressed kernel image.  Denial of service can be caused by padding a large file at the end of the kernel image, which can be used by a malicious domU root to cause OOM conditions on the host.

Acknowledgements:

Red Hat would like to thank Xinli Niu for reporting this issue.

Comment 3 Eugene Teo (Security Response) 2012-05-16 01:43:16 UTC
http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1817#c4
This has been assigned CVE-2012-2625 by MITRE.

Comment 4 Eugene Teo (Security Response) 2012-05-16 01:44:32 UTC
This is public, http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1817.

Comment 5 Petr Matousek 2012-07-10 13:49:21 UTC
Upstream fix:

http://xenbits.xensource.com/hg/xen-unstable.hg/rev/60f09d1ab1fe

Comment 6 errata-xmlrpc 2012-07-31 18:45:50 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2012:1130 https://rhn.redhat.com/errata/RHSA-2012-1130.html


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