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TITLE:
Qemu VirtIO virtqueue Request Handling Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA45187

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/45187/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=45187

RELEASE DATE:
2011-07-06

DISCUSS ADVISORY:
http://secunia.com/advisories/45187/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/45187/

ONLY AVAILABLE IN CUSTOMER AREA:
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https://ca.secunia.com/?page=viewadvisory&vuln_id=45187

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A vulnerability has been reported in Qemu, which can be exploited by
malicious, local users in a guest virtual machine to cause a DoS
(Denial of Service) and potentially gain escalated privileges.

The vulnerability is caused due to a boundary error within the VirtIO
implementation when handling virtqueue requests, which can be
exploited to cause a buffer overflow by sending specially crafted
virtqueue requests.

SOLUTION:
Restrict access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Red Hat credits Nelson Elhage.

ORIGINAL ADVISORY:
RHSA-2011-0919:
https://rhn.redhat.com/errata/RHSA-2011-0919.html

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
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