---------------------------------------------------------------------- Try a new way to discover vulnerabilities that ALREADY EXIST in your IT infrastructure. Join the FREE BETA test of the Network Software Inspector (NSI)! http://secunia.com/network_software_inspector/ The NSI enables you to INSPECT, DISCOVER, and DOCUMENT vulnerabilities in more than 4,000 different Windows applications. ---------------------------------------------------------------------- TITLE: PowerPoint Viewer OCX ActiveX Control Buffer Overflow SECUNIA ADVISORY ID: SA25092 VERIFY ADVISORY: http://secunia.com/advisories/25092/ CRITICAL: Highly critical IMPACT: System access WHERE: >From remote SOFTWARE: PowerPoint Viewer OCX 3.x http://secunia.com/product/14109/ DESCRIPTION: shinnai has discovered a vulnerability in PowerPoint Viewer OCX, which can be exploited by malicious people to compromise a user's system. The vulnerability is caused due to a boundary error within the PowerPoint Viewer ActiveX control (PowerPointViewer.ocx). This can be exploited to cause a stack-based buffer overflow via an overly long argument passed to certain methods (e.g. "HttpDownloadFile()" or "OpenWebFile()"). Successful exploitation may allow execution of arbitrary code when a user visits a malicious website. The vulnerability is confirmed in version 3.1.0.3. Other versions may also be affected. SOLUTION: Set the kill-bit for the affected ActiveX control. PROVIDED AND/OR DISCOVERED BY: shinnai ORIGINAL ADVISORY: http://moaxb.blogspot.com/2007/05/moaxb-01-powerpointviewerocx-31.html ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities. Subscribe: http://secunia.com/secunia_security_advisories/ Definitions: (Criticality, Where etc.) http://secunia.com/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 ----------------------------------------------------------------------