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CVE-2008-1804
preprocessors/spp_frag3.c in Sourcefire Snort before 2.8.1 does not properly identify packet fragments that have dissimilar TTL values,…
Medium6.8EPSS 2.3%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
preprocessors/spp_frag3.c in Sourcefire Snort before 2.8.1 does not properly identify packet fragments that have dissimilar TTL values, which allows remote attackers to bypass detection rules by using a different TTL for each fragment.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 2.3% · top 17% of all CVEs (4 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (14)
- snort-ttl-security-bypass(42584) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- http://cvs.snort.org/viewcvs.cgi/snort/src/preprocessors/spp_frag3.c.diff?r1=text&tr1=1.46.2.4&r2=text&tr2=1.46.2.5&diff_format=h (opens in a new tab)x_refsource_CONFIRMx_transferred
- FEDORA-2008-4986 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- 1020081 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- ADV-2008-1602 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- FEDORA-2008-5001 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- 30348 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://www.ipcop.org/index.php?name=News&file=article&sid=40 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 29327 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 20080521 Multiple Vendor Snort IP Fragment TTL Evasion Vulnerability (opens in a new tab)third-party-advisoryx_refsource_IDEFENSEx_transferred
- http://cvs.snort.org/viewcvs.cgi/snort/ChangeLog?rev=1.534.2.11 (opens in a new tab)x_refsource_CONFIRMx_transferred
- FEDORA-2008-5045 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- 31204 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 30563 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2008-1804)Record last updated .