Description
Cisco IOS 11.2.x and 12.0.x does not limit the size of its redirect table, which allows remote attackers to cause a denial of service (memory consumption) via spoofed ICMP redirect packets to the router.
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/12.0 - ICMP Redirect Denial of Service EDB-21465 · dos · May 21, 2002 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- cisco-ios-icmp-redirect-dos(9129) vdb-entry
- 20020521 Cisco IOS ICMP redirect DoS - Cisco's response mailing-list
- 4786 vdb-entry
- 20020521 Cisco IOS ICMP redirect DoS mailing-list