CVE-2004-2652
CVE-2004-2652 is a high-severity vulnerability in Sourcefire Snort with a CVSS 2.0 base score of 7.8. Its EPSS exploit-prediction score of 11% places it in the 95th percentile, indicating an elevated likelihood of exploitation.
Key facts
- Severity: High (CVSS 2.0 base score 7.8)
- EPSS exploit prediction: 11% (95th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Sourcefire Snort
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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 dereference.
- How severe is CVE-2004-2652?
- CVE-2004-2652 has a CVSS 2.0 base score of 7.8, rated high severity.
- Is CVE-2004-2652 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2004-2652?
- CVE-2004-2652 primarily affects Sourcefire Snort. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2004-2652?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2004-2652 published?
- CVE-2004-2652 was published on 2004-12-31 and last updated on 2026-06-16.
References
- http://secunia.com/advisories/13664
- http://securitytracker.com/id?1012656
- http://taosecurity.blogspot.com/2004/12/details-on-snort-dos-condition-you-may.html
- http://www.frsirt.com/exploits/20041222.angelDust.c.php
- http://www.osvdb.org/12578
- http://www.securiteam.com/exploits/6X00L20C0S.html
- http://www.securityfocus.com/bid/12084
- http://www.snort.org/arc_news/
- https://exchange.xforce.ibmcloud.com/vulnerabilities/18689
Affected products (4)
- cpe:2.3:a:sourcefire:snort:2.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:sourcefire:snort:2.1.1_rc1:*:*:*:*:*:*:*
- cpe:2.3:a:sourcefire:snort:2.1.3:*:*:*:*:*:*:*
- cpe:2.3:a:sourcefire:snort:2.2:*:*:*:*:*:*:*
More vulnerabilities in Sourcefire Snort
- CVE-2003-0209 — Critical (CVSS 10.0): Integer overflow in the TCP stream reassembly module (stream4) for Snort 2.0 and earlier allows remote attackers to…
- CVE-2005-3252 — High (CVSS 7.5): Stack-based buffer overflow in the Back Orifice (BO) preprocessor for Snort before 2.4.3 allows remote attackers to…
- CVE-2006-2769 — Medium (CVSS 5.0): The HTTP Inspect preprocessor (http_inspect) in Snort 2.4.0 through 2.4.4 allows remote attackers to bypass…
- CVE-2006-0839 — Medium (CVSS 5.0): The frag3 preprocessor in Sourcefire Snort 2.4.3 does not properly reassemble certain fragmented packets with IP…