The DecodeTCPOptions function in decode.c in Snort before 2.3.0, when printing TCP/IP…
Priority MEDIUM 47Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.11194 95th percentileScored 2026-11-07
Public exploit Yes 3 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:sourcefire:snort:2.1.0:*:*:*:*:*:*:* | 2.1.0 | Vulnerable | Sourcefire |
| cpe:2.3:a:sourcefire:snort:2.1.1_rc1:*:*:*:*:*:*:* | 2.1.1_rc1 | Vulnerable | Sourcefire |
| cpe:2.3:a:sourcefire:snort:2.1.3:*:*:*:*:*:*:* | 2.1.3 | Vulnerable | Sourcefire |
| cpe:2.3:a:sourcefire:snort:2.2:*:*:*:*:*:*:* | 2.2 | Vulnerable | Sourcefire |
- cpe:2.3:a:sourcefire:snort:2.1.0:*:*:*:*:*:*:* Versions 2.1.0 Vulnerable ·Sourcefire
- cpe:2.3:a:sourcefire:snort:2.1.1_rc1:*:*:*:*:*:*:* Versions 2.1.1_rc1 Vulnerable ·Sourcefire
- cpe:2.3:a:sourcefire:snort:2.1.3:*:*:*:*:*:*:* Versions 2.1.3 Vulnerable ·Sourcefire
- cpe:2.3:a:sourcefire:snort:2.2:*:*:*:*:*:*:* Versions 2.2 Vulnerable ·Sourcefire
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2004-2652
- 2026-10-03 Alias added: GHSA-ff3x-v55h-wqx3
References
More Sourcefire Snort vulnerabilities
- TI-2005-03078 Stack-based buffer overflow in the Back Orifice (BO) preprocessor for Snort before 2.4.3… CVSS 2.0HIGH 7.5
- TI-2003-00193 Integer overflow in the TCP stream reassembly module (stream4) for Snort 2.0 and earlier… CVSS 2.0HIGH 10.0
- TI-2006-02677 The HTTP Inspect preprocessor (http_inspect) in Snort 2.4.0 through 2.4.4 allows remote… CVSS 2.0MEDIUM 5.0
- TI-2006-00817 The frag3 preprocessor in Sourcefire Snort 2.4.3 does not properly reassemble certain… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2004-2652 · CVE Program
- CVE-2004-2652 · NVD
- FIRST EPSS
- GHSA-ff3x-v55h-wqx3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences