---------------------------------------------------------------------- "From 2007 to 2009 vulnerabilities in a typical end-user PC almost doubled from about 220 to 420." Non-Microsoft software to blame for increase in vulnerabilities affecting typical Windows end-users, read more: http://secunia.com/gfx/pdf/Secunia_Half_Year_Report_2010.pdf ---------------------------------------------------------------------- TITLE: Linux Kernel CIFS DNS Lookup Keyring Cache Poisoning Vulnerability SECUNIA ADVISORY ID: SA40691 VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/40691/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=40691 RELEASE DATE: 2010-07-24 DISCUSS ADVISORY: http://secunia.com/advisories/40691/#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/40691/ 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=40691 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 the Linux Kernel, which can be exploited by malicious, local users to conduct DNS cache poisoning attacks. The vulnerability is caused due to the CIFS DNS resolver mechanism not properly restricting access to the keyring storing lookup results, which can be exploited to e.g. trick the system into mounting from a malicious server by inserting spoofed lookup results. SOLUTION: Fixed in version 2.6.35-rc6. PROVIDED AND/OR DISCOVERED BY: Disclosed in a GIT commit. ORIGINAL ADVISORY: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=4c0c03ca54f72fdd5912516ad0a23ec5cf01bda7 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 ----------------------------------------------------------------------