Bug 870412 (CVE-2012-4544) - CVE-2012-4544 xen: Xen domain builder Out-of-memory due to malicious kernel/ramdisk
Summary: CVE-2012-4544 xen: Xen domain builder Out-of-memory due to malicious kernel/r...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2012-4544
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:
Depends On: 870413 870414 876997
Blocks: 870415 903143
TreeView+ depends on / blocked
 
Reported: 2012-10-26 12:25 UTC by Petr Matousek
Modified: 2023-05-11 20:30 UTC (History)
14 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2013-08-24 13:56:45 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2013:0241 0 normal SHIPPED_LIVE Moderate: xen security update 2013-02-07 23:53:04 UTC

Description Petr Matousek 2012-10-26 12:25:42 UTC 
The Xen PV domain builder contained no validation of the size of the supplied kernel or ramdisk either before or after decompression. This could cause the toolstack to consume all available RAM in the domain running the domain builder.

A malicious guest administrator who can supply a kernel or ramdisk can exhaust memory in domain 0 leading to a denial of service attack.

HVM guests are not affected by this vulnerability.

Reference:
http://lists.xen.org/archives/html/xen-devel/2012-10/msg02015.html
http://www.openwall.com/lists/oss-security/2012/10/26/3

Acknowledgements:

Red Hat would like to thank the Xen project for reporting this issue.
Comment 2 Petr Matousek 2012-10-26 12:28:55 UTC 
Created xen tracking bugs for this issue

Affects: fedora-all [bug 870414]
Comment 6 errata-xmlrpc 2013-02-07 18:54:25 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2013:0241 https://rhn.redhat.com/errata/RHSA-2013-0241.html
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