Home / vulnerabilities Secunia Security Advisory 43802
Posted on 18 March 2011
Source : packetstormsecurity.org Link
----------------------------------------------------------------------
Meet Secunia @ Microsoft Management Summit (MMS) in Las Vegas, USA (21-25 March).
http://secunia.com/company/events/mms_2011/
----------------------------------------------------------------------
TITLE:
Xen "arch_set_info_guest()" Denial of Service Vulnerability
SECUNIA ADVISORY ID:
SA43802
VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/43802/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=43802
RELEASE DATE:
2011-03-18
DISCUSS ADVISORY:
http://secunia.com/advisories/43802/#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/43802/
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=43802
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 Xen, which can be exploited by
malicious, local users in a guest virtual machine to cause a DoS
(Denial of Service).
The vulnerability is caused due to the "arch_set_info_guest()"
function in xen/arch/x86/domain.c not properly verifying that a valid
usermode pagetable has been provided, which can be exploited to e.g.
cause a lockup of the host system.
Successful exploitation requires a x86_64 system.
SOLUTION:
Fixed in the Mercurial repository.
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
PROVIDED AND/OR DISCOVERED BY:
Reported in a SUSE bug by Jan Beulich.
ORIGINAL ADVISORY:
SUSE Bug #679344:
https://bugzilla.novell.com/show_bug.cgi?id=679344
Xen commit:
http://xenbits.xen.org/hg/staging/xen-4.0-testing.hg/rev/ee088a0b5cb8
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/
----------------------------------------------------------------------
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.
----------------------------------------------------------------------
Unsubscribe: Secunia Security Advisories
http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org
----------------------------------------------------------------------
