Title: Helix Player Encoded URI Processing Buffer Overflow Vulnerability
Severity: HIGH
Description:
Helix Player is a media player available for Linux, BSD, and Solaris.
The application is prone to a buffer-overflow vulnerability because it fails to perform adequate boundary checks on user-supplied input. Specifically, the application assumes that '%' characters in URIs are always followed by exactly two additional characters. When decoding URIs that contain a '%' within the last two characters of the string, the application will fail to detect the end of the string, resulting in a buffer overflow.
Successful exploits may allow remote attackers to execute arbitrary code in the context of the application. Failed exploit attempts will cause denial-of-service conditions.
Affected Products:
- Real Networks Helix Player for Linux 10.0.0
- Real Networks Helix Player for Linux 10.0.1
- Real Networks Helix Player for Linux 10.0.2
- Real Networks Helix Player for Linux 10.0.3
- Real Networks Helix Player for Linux 10.0.4
- Real Networks Helix Player for Linux 10.0.5
- Real Networks Helix Player for Linux 10.0.6
- Real Networks Helix Player for Linux 10.0.7
- Real Networks Helix Player for Linux 11.0.0
- Real Networks Helix Player for Linux 11.0.1
- Real Networks Helix Player for Linux 11.0.2
- RedHat Enterprise Linux AS 4
- RedHat Enterprise Linux Desktop version 4
- RedHat Enterprise Linux ES 4
- RedHat Enterprise Linux WS 4
References:
- CVE: CVE-2010-0416
- Real Networks: Helix Player Homepage
- Tomas Hoger: Bug 561856 – CVE-2010-0416 HelixPlayer / RealPlayer: URL unescape buffer overflo
- gwright: [Common-cvs] util hxurl.cpp,1.24.4.1,1.24.4.1.4.1
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