The Font Xtra.x32 module in Adobe Shockwave Player before 18.104.22.1680 allows attackers to execute arbitrary code or cause a denial of service (memory corruption) via a PFR1 chunk containing an invalid size value that leads to an unexpected sign extension and a buffer overflow, a different vulnerability than CVE-2011-0556.
CVSS Severity (version 2.0):
Impact Subscore: 10.0
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable; Victim must voluntarily interact with attack mechanism
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service
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20110209 TPTI-11-05: Adobe Shockwave PFR1 Font Chunk Parsing Remote Code Execution Vulnerability
Advisory; Patch Information