---------------------------------------------------------------------- We are millions! Join us to protect all Pc's Worldwide. Download the new Secunia PSI 3.0 available in 5 languages and share it with your friends: http://secunia.com/psi ---------------------------------------------------------------------- TITLE: Xen HVM Guest MMIO Emulation Denial of Service Vulnerability SECUNIA ADVISORY ID: SA49789 VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/49789/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=49789 RELEASE DATE: 2012-07-27 DISCUSS ADVISORY: http://secunia.com/advisories/49789/#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/49789/ 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=49789 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 certain data of MMIO operations not being handled properly after emulation cycles in HVM guests and can be exploited to crash subsequent emulations. Successful exploitation requires that the guests are not PV (para-virtualised). The vulnerability is reported in all supported versions. SOLUTION: Apply patch xsa10-4.x.patch. PROVIDED AND/OR DISCOVERED BY: Reported by the vendor. ORIGINAL ADVISORY: http://www.openwall.com/lists/oss-security/2012/07/26/4 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/ ---------------------------------------------------------------------- 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 ----------------------------------------------------------------------