A logic error in the IP fragment cache functionality in pf in FreeBSD 5.3, 5.4, and 6.0, and OpenBSD, when a 'scrub fragment crop' or 'scrub fragment drop-ovl' rule is being used, allows remote attackers to cause a denial of service (crash) via crafted packets that cause a packet fragment to be inserted twice
Published Jan 25, 2006
5.0
MEDIUMCVSS 2.0
EPSS 6.60%
Description
A logic error in the IP fragment cache functionality in pf in FreeBSD 5.3, 5.4, and 6.0, and OpenBSD, when a 'scrub fragment crop' or 'scrub fragment drop-ovl' rule is being used, allows remote attackers to cause a denial of service (crash) via crafted packets that cause a packet fragment to be inserted twice.
Affected products
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
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.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
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 | 6.60% (0.06599) | 93.64th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.45% (0.06448) | 92.82th | v5 (v2026.06.15) |
| Mar 17, 2025 | 5.15% (0.05147) | 89.13th | v4 (v2025.03.14) |
| Dec 17, 2024 | 2.15% (0.02146) | 88.94th | v3 (v2023.03.01) |
| Mar 23, 2023 | 4.21% (0.04206) | 90.89th | v3 (v2023.03.01) |
| Mar 7, 2023 | 3.39% (0.03391) | 89.92th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.41% (0.01408) | 72.89th | v2 (v2022.01.01) |
| Mar 2, 2023 | 1.41% (0.01408) | 72.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.41% (0.01408) | 70.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.41% (0.01408) | 49.94th | v2 (v2022.01.01) |
No CWE recorded.
References (8)
- ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:07.pf.asc vendor-advisoryx_refsource_FREEBSDPatch
- ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2006-004.txt.asc vendor-advisoryx_refsource_NETBSD
- http://secunia.com/advisories/18609 third-party-advisoryx_refsource_SECUNIAPatchVendor Advisory
- http://securitytracker.com/id?1015542 vdb-entryx_refsource_SECTRACK
- http://www.openbsd.org/cgi-bin/cvsweb/src/sys/net/pf_norm.c.diff?r1=1.103&r2=1.104 x_refsource_CONFIRM
- http://www.osvdb.org/22732 vdb-entryx_refsource_OSVDB
- http://www.securityfocus.com/bid/16375 vdb-entryx_refsource_BID
- https://exchange.xforce.ibmcloud.com/vulnerabilities/24337 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:07.pf.asc | vendor-advisoryx_refsource_FREEBSDPatch | |
| ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2006-004.txt.asc | vendor-advisoryx_refsource_NETBSD | |
| http://secunia.com/advisories/18609 | third-party-advisoryx_refsource_SECUNIAPatchVendor Advisory | |
| http://securitytracker.com/id?1015542 | vdb-entryx_refsource_SECTRACK | |
| http://www.openbsd.org/cgi-bin/cvsweb/src/sys/net/pf_norm.c.diff?r1=1.103&r2=1.104 | x_refsource_CONFIRM | |
| http://www.osvdb.org/22732 | vdb-entryx_refsource_OSVDB | |
| http://www.securityfocus.com/bid/16375 | vdb-entryx_refsource_BID | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/24337 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.