Description
Buffer overflow in the Nortel UNIStim IP Softphone 2050 allows remote attackers to cause a denial of service (application abort) and possibly execute arbitrary code via a flood of invalid characters to the RTCP port (5678/udp) that triggers a Windows error message, aka "extraneous messaging."
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
- Nortel Networks UNIStim IP SoftPhone 2050 - RTCP Port Buffer Overflow EDB-30678 · remote · Oct 18, 2007 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 20071018 Nortel UNIStim IP Softphone Buffer-Overflow mailing-list
- 27252 third-party-advisory
- 3271 third-party-advisory
- http://www.csnc.ch/static/advisory/csnc/nortel_UNIStim_IP_softphone_buffer-overflow_v1.0.txt
- http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=655203
- ADV-2007-3540 vdb-entry
- 38521 vdb-entry
- nortel-ipsoftphone-rtcp-bo(37256) vdb-entry
- 26118 vdb-entry