ZDI-09-077: Sun Java Web Start Arbitrary Command Execution Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-09-077 November 4, 2009 -- Affected Vendors: Sun Microsystems -- Affected Products: Sun Microsystems Java Runtime -- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability by Digital Vaccine protection filter ID 9241. For further product information on the TippingPoint IPS, visit: http://www.tippingpoint.com -- Vulnerability Details: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Sun Java WebStart. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists in the implementation of security model permissions during the removal of installer extensions. By modifying an existing installer extension JNLP file, a condition occurs that allows for code supplied by a different URL than the original installer extension URL to run as a secure applet. This condition can result in arbitrary command injection under the privileges of the currently logged in user. -- Vendor Response: Sun Microsystems has issued an update to correct this vulnerability. More details can be found at: http://sunsolve.sun.com/search/document.do?assetkey=1-66-269870-1 -- Disclosure Timeline: 2009-08-17 - Vulnerability reported to vendor 2009-11-04 - Coordinated public release of advisory -- Credit: This vulnerability was discovered by: * Peter Csepely -- About the Zero Day Initiative (ZDI): Established by TippingPoint, The Zero Day Initiative (ZDI) represents a best-of-breed model for rewarding security researchers for responsibly disclosing discovered vulnerabilities. Researchers interested in getting paid for their security research through the ZDI can find more information and sign-up at: http://www.zerodayinitiative.com The ZDI is unique in how the acquired vulnerability information is used. TippingPoint does not re-sell the vulnerability details or any exploit code. Instead, upon notifying the affected product vendor, TippingPoint provides its customers with zero day protection through its intrusion prevention technology. Explicit details regarding the specifics of the vulnerability are not exposed to any parties until an official vendor patch is publicly available. Furthermore, with the altruistic aim of helping to secure a broader user base, TippingPoint provides this vulnerability information confidentially to security vendors (including competitors) who have a vulnerability protection or mitigation product. Our vulnerability disclosure policy is available online at: http://www.zerodayinitiative.com/advisories/disclosure_policy/
