The frag3 preprocessor in Sourcefire Snort 2.4.3 does not properly reassemble certain…
Priority LOW 26Published · 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 · Partial · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The frag3 preprocessor in Sourcefire Snort 2.4.3 does not properly reassemble certain fragmented packets with IP options, which allows remote attackers to evade detection of certain attacks, possibly related to IP option lengths.
Why it matters now
EPSS 0.01409 72nd percentileScored 2026-11-07
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 · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:sourcefire:snort:2.4.3:*:*:*:*:*:*:* | 2.4.3 | Vulnerable | Sourcefire |
- cpe:2.3:a:sourcefire:snort:2.4.3:*:*:*:*:*:*:* Versions 2.4.3 Vulnerable ·Sourcefire
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2006-0839
- 2026-10-03 Alias added: GHSA-2p2f-w34f-c527
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-2004-02522 The DecodeTCPOptions function in decode.c in Snort before 2.3.0, when printing TCP/IP… CVSS 2.0HIGH 7.8
- 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
Sources
- CVE-2006-0839 · CVE Program
- CVE-2006-0839 · NVD
- FIRST EPSS
- GHSA-2p2f-w34f-c527 · GitHub Advisory Database · CC BY 4.0
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