ZDI-11-199: Oracle Java Soundbank Decompression Remote Code Execution Vulnerability
June 14, 2011
-- CVE ID: CVE-2011-0802
-- CVSS: 7.5, (AV:N/AC:L/Au:N/C:P/I:P/A:P)
-- Affected Vendors: Oracle
-- Affected Products: Oracle Java Runtime
-- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability by Digital Vaccine protection filter ID 11344. For further product information on the TippingPoint IPS, visit:
-- 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 within the way Java parses soundbank files. When a soundbank file contains compressed data it is first decompressed and then Java will parse the decompressed data. Java will read the 'channels' and 'frames' properties from the decompressed data and uses those to calculate a buffer size to store data. An integer wrap can occur during this calculation resulting in the creation of a buffer that is too small to hold all the data. This can result in 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:
-- Disclosure Timeline: 2011-06-02 - Vulnerability reported to vendor 2011-06-14 - Coordinated public release of advisory
-- Credit: This vulnerability was discovered by: * Aniway.Anyway@gmail.com
-- 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:
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:
Follow the ZDI on Twitter: