CVE-2004-2652
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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 11.2%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 2.0
- 7.8 HIGHAV:N/AC:L/Au:N/C:N/I:N/A:C
- EPSS
- 11.19% probability · 96th percentile
- Public exploits
- 2 in Exploit-DB · verified · first 22 December 2004
- CISA KEV
- Not listed
- Affected
- sourcefire/snort
- Source
- cve@mitre.org
EPSS 11.2% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (2)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://secunia.com/advisories/13664Patch, Vendor Advisory
- http://securitytracker.com/id?1012656Exploit, Patch
- http://taosecurity.blogspot.com/2004/12/details-on-snort-dos-condition-you-may.htmlExploit, Vendor Advisory
- http://www.frsirt.com/exploits/20041222.angelDust.c.php
- http://www.osvdb.org/12578Exploit
- http://www.securiteam.com/exploits/6X00L20C0S.htmlExploit
- http://www.securityfocus.com/bid/12084Exploit
- http://www.snort.org/arc_news/
- https://exchange.xforce.ibmcloud.com/vulnerabilities/18689
- http://secunia.com/advisories/13664Patch, Vendor Advisory
- http://securitytracker.com/id?1012656Exploit, Patch
- http://taosecurity.blogspot.com/2004/12/details-on-snort-dos-condition-you-may.htmlExploit, Vendor Advisory
- http://www.frsirt.com/exploits/20041222.angelDust.c.php
- http://www.osvdb.org/12578Exploit
- http://www.securiteam.com/exploits/6X00L20C0S.htmlExploit
- http://www.securityfocus.com/bid/12084Exploit
- http://www.snort.org/arc_news/
- https://exchange.xforce.ibmcloud.com/vulnerabilities/18689
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.