-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ZDI-12-189 : Oracle Java WebStart Changing System Properties Remote Code Execution Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-12-189 December 21, 2012 - -- CVE ID: CVE-2012-1721 - -- CVSS: 9, AV:N/AC:L/Au:N/C:P/I:P/A:C - -- Affected Vendors: Oracle - -- Affected Products: Oracle Java Runtime - -- Vulnerability Details: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Oracle Java. 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 because it is possible to change system properties through trusted JNLP files. If a JNLP file requests "" and only references signed, trusted JAR files, it can set all System properties. By referencing a trusted JNLP file from an untrusted one it is possible to change System Properties that can lead to remote code execution under the context of the current user. - -- Vendor Response: Oracle has issued an update to correct this vulnerability. More details can be found at: http://www.oracle.com/technetwork/topics/security/javacpujun2012-1515912.ht ml - -- Disclosure Timeline: 2012-03-14 - Vulnerability reported to vendor 2012-12-21 - Coordinated public release of advisory - -- Credit: This vulnerability was discovered by: * Chris Ries - -- 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/ Follow the ZDI on Twitter: http://twitter.com/thezdi -----BEGIN PGP SIGNATURE----- Version: PGP Desktop 10.2.0 (Build 1950) Charset: utf-8 wsBVAwUBUNRWf1VtgMGTo1scAQL17Af+PLKQVLcU5Y6zbxi8z9zDy8lZV/qhycKN nSRaC5SOh+aVBVN3hvRc8LkRpD1me4kWLk5uvfP4dV9yZToRCt1dZOvIFBgJOYdd ztiOTFgQCGapxv4bdvI9VRvx9bUzO8Rl2k3L32xV1gLpe9UKiQbJw5qC8SbhYqWY 8j4JA03/66hyTZqT+M6tWKtB80P2lCuYp4aoF6kcIn//5tyS4h0RgPWRTaxzmBcU p6V2m3rxDpaTyPRZxN7Q9c8JvN3ClWla1gcNdYAFsh7bnYgiOeI4cvk0vY6v312s +3gKQKsU2w+Its1gekAIEk11tlyR3SRtd/mFnk4fEzvlhkSjytAvgQ== =VL7/ -----END PGP SIGNATURE-----