Description
Heap-based buffer overflow in the TFTP server capability in Cisco IOS 11.1, 11.2, and 11.3 allows remote attackers to cause a denial of service (reset) or modify configuration via a long filename.
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
- Cisco IOS 11.x - TFTP Server Long File Name Buffer Overflow EDB-21655 · dos · Jul 26, 2002 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- cisco-tftp-filename-bo(9700) vdb-entry
- 20020822 Cisco IOS exploit PoC mailing-list
- 20020727 Phenoelit Advisory, 0815 ++ * - Cisco_tftp mailing-list
- 20020730 TFTP Long Filename Vulnerability vendor-advisory
- 5328 vdb-entry
- 854 vdb-entry