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zdiSebastian Apelt (www.siberas.de)ZDI-11-217
HistoryJun 14, 2011 - 12:00 a.m.

Adobe Shockwave Font Structure Parsing Remote Code Execution Vulnerability

2011-06-1400:00:00
Sebastian Apelt (www.siberas.de)
www.zerodayinitiative.com
11

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.027 Low

EPSS

Percentile

90.3%

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 Font Asset.x32 module responsible for parsing font-related structures within Director movies (.dir). The code within this module extracts and copies strings without any bounds checking. Several calls to strcpy can be abused to overwrite stack buffers and subsequently execute remote code under the context of the user running the browser.

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.027 Low

EPSS

Percentile

90.3%