Title: RSA Security RSA Authentication Agent For Web Remote Heap Buffer Overflow Vulnerability
Severity: CRITICAL
Description:
RSA Security RSA Authentication Agent is a utility designed to secure network-based access to enterprise networks. The RSA Authentication Agent for Web is designed specifically to facilitate a universal interface for authentication to Web based applications. This agent is designed to operate under Microsoft's IIS Web server.
A remote heap-based buffer overflow vulnerability exists in RSA Authentication Agent for Web. This issue is due to a failure of the application to properly bounds check user-supplied input data prior to copying it into a fixed-sized heap buffer memory region.
This issue presents itself when attackers send an excessively large 'chunk' in an HTTP 'chunked-encoding' style connection to a vulnerable server. As the application attempts to process the malicious data, critical memory control structures are likely overwritten, allowing the attacker to control the normal flow of execution of the application.
This vulnerability allows remote attackers to execute arbitrary machine code in the context of the vulnerable server application. This reportedly occurs with 'LocalSystem' privileges, allowing the attacker to gain complete control of the targeted computer.
Versions 5.0, 5.2, and 5.3 of RSA Authentication Agent for Web are vulnerable to this issue.
Affected Products:
- RSA Security RSA Authentication Agent for Web 5.0.0
- RSA Security RSA Authentication Agent for Web 5.2.0
- RSA Security RSA Authentication Agent for Web 5.3.0
References:
- RSA Security: RSA Homepage
- RSA Security: SecurID Product Homepage
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