MEDIUM
snort: IP Fragment TTL Evasion Vulnerability
Published May 22, 2008
6.8
MEDIUMCVSS 2.0
EPSS 2.27%
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.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
6.8 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.27% 0.02269
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02269
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.27% (0.02269) | 82.42th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.27% (0.02269) | 80.71th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.64% (0.00644) | 68.92th | v4 (v2025.03.14) |
| Feb 16, 2025 | 0.93% (0.00929) | 83.06th | v3 (v2023.03.01) |
| Dec 12, 2024 | 2.31% (0.02308) | 90.10th | v3 (v2023.03.01) |
| May 28, 2024 | 2.19% (0.02187) | 89.39th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.02% (0.02024) | 87.11th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.41% (0.03407) | 84.65th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.41% (0.03407) | 83.10th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.41% (0.03407) | 66.20th | v2 (v2022.01.01) |
Weaknesses (0)
No CWE recorded.
References (18)
- http://cvs.snort.org/viewcvs.cgi/snort/ChangeLog?rev=1.534.2.11 x_refsource_CONFIRM
- 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 x_refsource_CONFIRM
- http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=701 third-party-advisoryx_refsource_IDEFENSE
- http://secunia.com/advisories/30348 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/30563 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/31204 third-party-advisoryx_refsource_SECUNIA
- http://securitytracker.com/id?1020081 vdb-entryx_refsource_SECTRACK
- http://www.ipcop.org/index.php?name=News&file=article&sid=40 x_refsource_CONFIRM
- http://www.securityfocus.com/bid/29327 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2008/1602 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2008-1804 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=447870 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/42584 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2008-1804
- https://www.cve.org/CVERecord?id=CVE-2008-1804
- https://www.redhat.com/archives/fedora-package-announce/2008-June/msg00156.html vendor-advisoryx_refsource_FEDORA
- https://www.redhat.com/archives/fedora-package-announce/2008-June/msg00167.html vendor-advisoryx_refsource_FEDORA
- https://www.redhat.com/archives/fedora-package-announce/2008-June/msg00198.html vendor-advisoryx_refsource_FEDORA
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published May 22, 2008
Updated Aug 7, 2024
Reserved Apr 15, 2008
Link CVE-2008-1804
CISA Vulnrichment
Updated n/a