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The final version of the CSI 6.0 has been released. 
Find out why this is not just another Patch Management solution: http://secunia.com/blog/325/

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TITLE:
Xen netback Two Denial of Service Vulnerabilities

SECUNIA ADVISORY ID:
SA52056

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/52056/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=52056

RELEASE DATE:
2013-02-06

DISCUSS ADVISORY:
http://secunia.com/advisories/52056/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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http://secunia.com/advisories/52056/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=52056

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:
Two vulnerabilities have been reported in Xen, which can be exploited
by malicious, local users in a guest virtual machine to cause a DoS
(Denial of Service).

1) An input sanitization error within the netback implementation when
handling the ring producer/consumer pointers can be exploited to
trigger an infinite loop and render the system unusable.

2) A memory leak error within the netback implementation can be
exploited to render the system unusable.

The vulnerabilities are reported in versions 3.x including Linux
2.6.18.

SOLUTION:
Fixed in the Mercurial repository.

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://www.openwall.com/lists/oss-security/2013/02/05/8

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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private users keeping their systems up to date against the latest
vulnerabilities.

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