Description
The DecodeTCPOptions function in decode.c in Snort before 2.3.0, when printing TCP/IP options using FAST output or verbose mode, allows remote attackers to cause a denial of service (crash) via packets with invalid TCP/IP options, which trigger a null dereference.
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 2
- Snort 2.1/2.2 - DecodeTCPOptions Remote Denial of Service (1) EDB-25046 · dos · Dec 22, 2004 · verified
- Snort 2.1/2.2 - DecodeTCPOptions Remote Denial of Service (2) EDB-25047 · dos · Dec 22, 2004 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 1012656 vdb-entry
- http://www.frsirt.com/exploits/20041222.angelDust.c.php
- snort-tcpip-printing-dos(18689) vdb-entry
- 12084 vdb-entry
- http://www.securiteam.com/exploits/6X00L20C0S.html
- 12578 vdb-entry
- http://www.snort.org/arc_news/
- 13664 third-party-advisory
- http://taosecurity.blogspot.com/2004/12/details-on-snort-dos-condition-you-may.html