---------------------------------------------------------------------- Secunia integrated with Microsoft WSUS http://secunia.com/blog/71/ ---------------------------------------------------------------------- TITLE: Opera TLS Session Renegotiation Plaintext Injection Vulnerability SECUNIA ADVISORY ID: SA38546 VERIFY ADVISORY: http://secunia.com/advisories/38546/ DESCRIPTION: Opera has acknowledged a vulnerability, which can be exploited by malicious people to manipulate certain data. The vulnerability is caused due to an error in the TLS protocol while handling session re-negotiations. This can be exploited to insert arbitrary plaintext before data sent by a legitimate client in an existing TLS session via Man-in-the-Middle (MitM) attacks. SOLUTION: An experimental client side fix is included in Opera 10.50 pre-alpha build 3206. PROVIDED AND/OR DISCOVERED BY: Independently discovered by Marsh Ray, PhoneFactor and Martin Rex. ORIGINAL ADVISORY: http://www.opera.com/docs/changelogs/windows/1050b1/ http://www.opera.com/support/kb/view/944/ http://my.opera.com/securitygroup/blog/2010/01/23/alpha-testing-tls-renego-fix ---------------------------------------------------------------------- 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 ----------------------------------------------------------------------