Title: Apple QuickTime RTSP Response Header Content-Type Remote Stack Based Buffer Overflow Vulnerability
Severity: HIGH
Description:
Apple QuickTime is a media player for Mac OS X and Microsoft Windows.
The application is prone to a remote buffer-overflow vulnerability because it fails to properly bounds-check user-supplied input before copying it to an insufficiently sized stack-based memory buffer.
This issue occurs when handling specially crafted RTSP (Real Time Streaming Protocol) Response headers that have an excessively large 'Content-Type' value.
Attackers can leverage this issue to execute arbitrary machine code in the context of the user running the affected application. Successful exploits will compromise the application and possibly the underlying computer. Failed attacks will likely cause denial-of-service conditions.
QuickTime 7.3 is vulnerable to this issue; other versions may also be affected.
UPDATE (December 4, 2007): Attackers are exploiting this issue through the Second Life Viewer to steal Linden dollars from unsuspecting victims.
Affected Products:
- Apple QuickTime Player 7.3
- Gentoo Linux
- Gentoo media-libs/win32codecs 20071007-r2
- LINDEN RESEARCH, INC. Second Life Viewer
- LINDEN RESEARCH, INC. Second Life Viewer 1.18.5.3
References:
- Apple: About the security content of QuickTime 7.3.1
- Apple: Apple QuickTime Homepage
- Microsoft: Microsoft Knowledge Base Article 240797
- US-CERT: Vulnerability Note VU#659761 Apple QuickTime RTSP Content-Type header stack buff
- phoenixlinden: Second Life Viewer Susceptible to Quicktime Security Flaw
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