Description
The CHECK command in Cosign 2.0.1 and earlier allows remote attackers to bypass authentication requirements via CR (\r) sequences in the cosign cookie parameter.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Cosign 2.0.1/2.9.4a - CGI Check Cookie Command Remote Authentication Bypass EDB-29842 · webapps · Apr 11, 2007 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 20070411 Cosign SSO Authentication Bypass mailing-list
- 24845 third-party-advisory
- http://www.umich.edu/~umweb/software/cosign/cosign-vuln-2007-001.txt
- ADV-2007-1359 vdb-entry