Exploit the possiblities

Secunia Security Advisory 44502

Secunia Security Advisory 44502
Posted May 10, 2011
Authored by Secunia | Site secunia.com

Secunia Security Advisory - Some vulnerabilities have been reported in Xen, which can be exploited by malicious, local users to disclose potentially sensitive information, cause a DoS (Denial of Service), and gain escalated privileges.

tags | advisory, denial of service, local, vulnerability
MD5 | 306f32137b200ce1993559b9dc5734ff

Secunia Security Advisory 44502

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TITLE:
Xen PV Kernel Decompression Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA44502

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/44502/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=44502

RELEASE DATE:
2011-05-11

DISCUSS ADVISORY:
http://secunia.com/advisories/44502/#comments

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

http://secunia.com/advisories/44502/

ONLY AVAILABLE IN CUSTOMER AREA:
* Authentication Level
* Report Reliability
* Secunia PoC
* Secunia Analysis
* Systems Affected
* Approve Distribution
* Remediation Status
* Secunia CVSS Score
* CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=44502

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:
Some vulnerabilities have been reported in Xen, which can be
exploited by malicious, local users to disclose potentially sensitive
information, cause a DoS (Denial of Service), and gain escalated
privileges.

1) An integer overflow error within the decompression of
paravirtualised guests can be exploited to cause a buffer overflow
and potentially execute arbitrary code.

Note: This only affects management domains with 32bit userland.

2) Integer overflow errors within the decompression of
paravirtualised guests can be exploited to disclose potentially
sensitive information.

3) An error within the decompression of paravirtualised guests can be
exploited to cause an infinite loop.

SOLUTION:
Apply patches.

Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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

ORIGINAL ADVISORY:
http://lists.xensource.com/archives/html/xen-devel/2011-05/msg00483.html
http://lists.xensource.com/archives/html/xen-devel/2011-05/msg00491.html

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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