The frag3 preprocessor in Snort 2.6.1.1, 2.6.1.2, and 2.7.0 beta, when configured for…
Priority MEDIUM 40Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- 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 frag3 preprocessor in Snort 2.6.1.1, 2.6.1.2, and 2.7.0 beta, when configured for inline use on Linux without the ip_conntrack module loaded, allows remote attackers to cause a denial of service (segmentation fault and application crash) via certain UDP packets produced by send_morefrag_packet and send_overlap_packet.
Why it matters now
EPSS 0.05852 93rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
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:o:linux:linux_kernel:*:*:ia32_64-bit:*:*:*:*:* | all versions | Running on | Linux |
| cpe:2.3:a:snort:snort:2.6.1.1:*:*:*:*:*:*:* | 2.6.1.1 | Vulnerable | Snort |
| cpe:2.3:a:snort:snort:2.6.1.2:*:*:*:*:*:*:* | 2.6.1.2 | Vulnerable | Snort |
| cpe:2.3:a:snort:snort:2.7_beta1:*:*:*:*:*:*:* | 2.7_beta1 | Vulnerable | Snort |
- cpe:2.3:o:linux:linux_kernel:*:*:ia32_64-bit:*:*:*:*:* Versions all versions Running on ·Linux
- cpe:2.3:a:snort:snort:2.6.1.1:*:*:*:*:*:*:* Versions 2.6.1.1 Vulnerable ·Snort
- cpe:2.3:a:snort:snort:2.6.1.2:*:*:*:*:*:*:* Versions 2.6.1.2 Vulnerable ·Snort
- cpe:2.3:a:snort:snort:2.7_beta1:*:*:*:*:*:*:* Versions 2.7_beta1 Vulnerable ·Snort
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2007-1398
- 2026-10-03 Alias added: GHSA-gj46-3ff3-vj53
References
More Snort vulnerabilities
- TI-2006-05090 Stack-based buffer overflow in the DCE/RPC preprocessor in Snort before 2.6.1.3, and 2.7… CVSS 2.0HIGH 10.0
- TI-2003-00029 Buffer overflow in the RPC preprocessor for Snort 1.8 and 1.9.x before 1.9.1 allows… CVSS 2.0HIGH 10.0
- TI-2009-03477 Snort before 2.8.5.1, when the -v option is enabled, allows remote attackers to cause a… CVSS 2.0MEDIUM 4.3
- TI-2016-01306 Untrusted search path vulnerability in Snort 2.9.7.0-WIN32 allows remote attackers to… CVSS 3.0HIGH 8.8
- TI-2021-00950 Multiple Cisco Products Snort HTTP Detection Engine File Policy Bypass Vulnerability CVSS 3.1HIGH 7.5
- TI-2001-00644 Various Intrusion Detection Systems (IDS) including (1) Cisco Secure Intrusion Detection… CVSS 2.0HIGH 7.5
Sources
- CVE-2007-1398 · CVE Program
- CVE-2007-1398 · NVD
- FIRST EPSS
- GHSA-gj46-3ff3-vj53 · GitHub Advisory Database · CC BY 4.0
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