[NEWS] RealPlayer Data Packet Stack Overflow
From: SecuriTeam (support_at_securiteam.com)
To: firstname.lastname@example.org Date: 14 Nov 2005 16:20:10 +0200
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RealPlayer Data Packet Stack Overflow
Lack of proper length validation in RealPlayer's data packet handling
allows attackers to cause the program to execute arbitrary code using a
* RealPlayer version 10.5 (22.214.171.1240-1235) for Windows
* RealPlayer version 10 for Windows
* RealOne Player v2 for Windows
* RealOne Player v1 for Windows
* RealPlayer version 8 for Windows
* RealPlayer Enterprise for Windows
* RealPlayer 10 for Mac
* RealPlayer 10 (10.0.0 - 5) for Linux
* Helix Player (10.0.0 - 5) for Linux
This specific flaw exists in the first data packet contained in a Real
Media file. By specially crafting a malformed .rm movie file, a direct
stack overwrite is triggered, and reliable code execution is then
The vulnerability is triggered by setting the application specific length
field of the [data packet + 1] to 0x80 - 0xFF this will cause a stack
overflow. The value is sign-extended and passed as the length to memcpy.
The vendor has issued a patch:
The information has been provided by <mailto:Advisories@eeye.com> Eeye.
The vendor advisory can be found at:
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