73738 : Xen Paravirtualised Guests Decompression Local Overflow
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Timeline

Disclosure Date
2011-05-09

Description

<em style='font-weight:bold;'>(Description Provided by <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=2011-1583" target="_blank">CVE</a>)</em> : Multiple integer overflows in tools/libxc/xc_dom_bzimageloader.c in Xen 3.2, 3.3, 4.0, and 4.1 allow local users to cause a denial of service and possibly execute arbitrary code via a crafted paravirtualised guest kernel image that triggers (1) a buffer overflow during a decompression loop or (2) an out-of-bounds read in the loader involving unspecified length fields.

Classification

Location: Local Access Required
Attack Type: Input Manipulation
Impact: Loss of Integrity
Solution: Patch / RCS
Exploit: Exploit Unknown
Disclosure: Vendor Verified

Solution

Currently, there are no known workarounds or upgrades to correct this issue. However, Xen has released a patch to address this vulnerability. Check the vendor solution in the references section.

Products

Unknown or Incomplete

References

CVE ID: 2011-1583 (see also: NVD)
Secunia Advisory ID: 44498 44502 44694 44778 45880 46759
Related OSVDB ID: 73739 73740
Vendor Specific News/Changelog Entry: http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060597.html
http://support.citrix.com/article/CTX130325
http://www.debian.org/security/2011/dsa-2337
Vendor Specific Advisory URL: http://lists.xensource.com/archives/html/xen-devel/2011-05/msg00483.html
https://hermes.opensuse.org/messages/8639800
Vendor Specific Solution URL: http://lists.xensource.com/archives/html/xen-devel/2011-05/msg00491.html

Tools & Filters

	54934

Credit

Not Available

CVSSv2 Score

CVSSv2 Base Score = 6.9
Source: nvd.nist.gov | Generated: 2011-08-15 | Disagree?

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