---------------------------------------------------------------------- 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: Excel Viewer OCX ActiveX Control Buffer Overflow Vulnerabilities SECUNIA ADVISORY ID: SA25077 VERIFY ADVISORY: http://secunia.com/advisories/25077/ CRITICAL: Highly critical IMPACT: System access WHERE: >From remote SOFTWARE: Excel Viewer OCX 3.x http://secunia.com/product/14112/ DESCRIPTION: shinnai has discovered some vulnerabilities in Excel Viewer OCX, which can be exploited by malicious people to compromise a user's system. The vulnerabilities are caused due to boundary errors within the Excel Viewer ActiveX control (ExcelViewer.ocx). These can be exploited to cause stack-based buffer overflows via overly long arguments 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 vulnerabilities are confirmed in version 3.2.0.5. 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-02-excelviewerocx-v-31-multiple.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 ----------------------------------------------------------------------