Description
Multiple TCP implementations with Protection Against Wrapped Sequence Numbers (PAWS) with the timestamps option enabled allow remote attackers to cause a denial of service (connection loss) via a spoofed packet with a large timer value, which causes the host to discard later packets because they appear to be too old.
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
- TCP TIMESTAMPS - Denial of Service EDB-1008 · dos · May 21, 2005 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- tcp-ip-timestamp-dos(20635) vdb-entry
- 15393 third-party-advisory
- VU#637934 third-party-advisory
- 15417 third-party-advisory
- 18662 third-party-advisory
- 13676 vdb-entry
- 20050518 Vulnerability in a Variant of the TCP Timestamps Option vendor-advisory
- 18222 third-party-advisory
- http://support.avaya.com/elmodocs2/security/ASA-2006-032.htm