Description
Cisco IP Phone 7940 with firmware P0S3-08-7-00 allows remote attackers to cause a denial of service ("486 Busy" responses or device reboot) via a sequence of SIP INVITE transactions in which the Request-URI lacks a user name, a different vulnerability than CVE-2007-4459.
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 Phone 7940 - Remote Denial of Service EDB-4692 · dos · Dec 5, 2007 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 26711 vdb-entry
- 20071208 Cisco Phone 7940 remote DOS mailing-list
- 20071205 Cisco Phone 7940 remote DOS mailing-list
- 4692 exploit
- 20071208 Re: Cisco Phone 7940 remote DOS mailing-list
- 1019059 vdb-entry
- cisco-ipphone-invite-dos(38853) vdb-entry