Adobe Shockwave Player Director Remote Code Execution Vulnerability

2010.08.30
Credit: ZDI
Risk: High
Local: No
Remote: Yes
CWE: CWE-20


CVSS Base Score: 9.3/10
Impact Subscore: 10/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: Complete
Integrity impact: Complete
Availability impact: Complete

ZDI-10-164: Adobe Shockwave Player Director File FFFFFF88 Record Processing Remote Code Execution Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-10-164 August 24, 2010 -- CVE ID: CVE-2010-2876 -- CVSS: 9, (AV:N/AC:L/Au:N/C:P/I:P/A:C) -- Affected Vendors: Adobe -- Affected Products: Adobe Shockwave Player -- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability by Digital Vaccine protection filter ID 10285. 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 the Adobe Shockwave Player. 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 code responsible for parsing .dir and .dcr files. The director file format is RIFF based. While parsing an undocumented record of type 0xFFFFFFF8 the process trusts two user supplied word values when performing arithmetic to calculate a heap buffer size. By specifying large enough values an integer wrap can occur. The allocated heap buffer can later be overflowed with user supplied data. This can be leveraged by attackers to execute remote code under the context of the user running the browser. -- Vendor Response: Adobe has issued an update to correct this vulnerability. More details can be found at: http://www.adobe.com/support/security/bulletins/apsb10-20.html -- Disclosure Timeline: 2010-07-20 - Vulnerability reported to vendor 2010-08-24 - Coordinated public release of advisory -- Credit: This vulnerability was discovered by: * Anonymous -- 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

References:

http://www.adobe.com/support/security/bulletins/apsb10-20.html
http://www.zerodayinitiative.com/advisories/ZDI-10-164
http://www.securityfocus.com/archive/1/archive/1/513312/100/0/threaded


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