---------------------------------------------------------------------- Secunia integrated with Microsoft WSUS http://secunia.com/blog/71/ ---------------------------------------------------------------------- TITLE: Samba Symlink Handling Directory Traversal Vulnerability SECUNIA ADVISORY ID: SA38454 VERIFY ADVISORY: http://secunia.com/advisories/38454/ DESCRIPTION: Kingcope has discovered a vulnerability in Samba, which can be exploited by malicious people to bypass certain security restrictions and disclose sensitive information. The vulnerability is caused due to Samba allowing the creation of symlinks to directories placed outside a writable share. This can be exploited to gain read and write access to restricted directories with the privileges of the e.g. guest account user, via directory traversal attacks. Successful exploitation without authentication requires that a public writable share is exported. The vulnerability is confirmed in version 3.4.5. Other versions may also be affected. SOLUTION: Do not export writable shares to untrusted users. PROVIDED AND/OR DISCOVERED BY: Kingcope ORIGINAL ADVISORY: http://archives.neohapsis.com/archives/fulldisclosure/2010-02/0083.html ---------------------------------------------------------------------- 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 ----------------------------------------------------------------------