Description
Buffer overflow in the Next Hop Resolution Protocol (NHRP) functionality in Cisco IOS 12.0 through 12.4 allows remote attackers to cause a denial of service (restart) and execute arbitrary code via a crafted NHRP packet.
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 Next Hop Resolution Protocol (NHRP) - Denial of Service EDB-4272 · dos · Aug 9, 2007 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 25238 vdb-entry
- 26360 third-party-advisory
- VU#201984 third-party-advisory
- cisco-ios-nexthop-bo(35889) vdb-entry
- oval:org.mitre.oval:def:5675 vdb-entry signature
- 20070809 Cisco NHRP denial of service (cisco-sa-20070808-nhrp) mailing-list
- ADV-2007-2818 vdb-entry
- 20070808 Cisco IOS Next Hop Resolution Protocol Vulnerability vendor-advisory
- 1018535 vdb-entry