Title: Real Networks Helix Server DESCRIBE Request Remote Heap Overflow Vulnerability
Severity: CRITICAL
Description:
Real Networks Helix Server is a multiformat, cross-platform streaming server.
The application is prone to a heap-overflow vulnerability because it fails to perform sufficient boundary checks on user-supplied data before copying it to an insufficiently sized memory buffer.
Specifically, the vulnerability occurs when the application processes a 'DESCRIBE' request with an invalid 'LoadTestPassword' field. The 'RegisterPlayerOptions' function in the 'rtspprot.cpp' source file fails to properly set the buffer size when the function returning the size fails.
An attacker could leverage this issue to execute arbitrary code with superuser privileges. Successful exploits will result in a complete computer compromise. Failed exploit attempts will likely result in denial-of-service conditions.
This issue affects version 11.1.2.
Affected Products:
- Real Networks Helix Server 11.1.2
References:
- Real Networks: Real Networks Helix Server Homepage
- helixcommunity.org: [Server-cvs] protocol/rtsp rtspprot.cpp,1.80,1.81
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