Description
Multiple SSH2 servers and clients do not properly handle large packets or large fields, which may allow remote attackers to cause a denial of service or possibly execute arbitrary code via buffer overflow attacks, as demonstrated by the SSHredder SSH protocol test suite.
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.
Metasploit 1 module
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PuTTY Buffer Overflow
exploit/windows/ssh/putty_msg_debug
Exploit-DB 2
- PuTTy.exe 0.53 - Remote Buffer Overflow (Metasploit) EDB-16463 · remote · Jun 15, 2010 · verified
- PuTTy.exe 0.53 - Validation Remote Buffer Overflow (Metasploit) EDB-1788 · remote · May 15, 2006 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 1005812 vdb-entry
- CA-2002-36 third-party-advisory
- ssh-transport-multiple-bo(10870) vdb-entry
- 20021216 R7-0009: Vulnerabilities in SSH2 Implementations from Multiple Vendors mailing-list
- 6407 vdb-entry
- oval:org.mitre.oval:def:5848 vdb-entry signature
- 1005813 vdb-entry