Vulnerability Monitor

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CVE-2006-0381

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.

Security Impact Summary

CVE-2006-0381 is a security vulnerability that . Impacting 1 product from freebsd organizations running these solutions should prioritize assessment and patching.

Historical Context

Originally identified in 2006, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.

Published

2006-01-25T22:03:00.000

Last Modified

2025-04-03T01:03:51.193

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 5.0 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
NVD-CWE-Other

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	freebsd	freebsd	5.3	Yes
Operating System	freebsd	freebsd	5.3	Yes
Operating System	freebsd	freebsd	5.3	Yes
Operating System	freebsd	freebsd	5.3	Yes
Operating System	freebsd	freebsd	5.4	Yes
Operating System	freebsd	freebsd	5.4	Yes
Operating System	freebsd	freebsd	5.4	Yes
Operating System	freebsd	freebsd	6.0	Yes
Operating System	freebsd	freebsd	6.0	Yes

References

ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:07.pf.asc Patch ([email protected])
ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2006-004.txt.asc ([email protected])
http://secunia.com/advisories/18609 Patch, Vendor Advisory ([email protected])
http://securitytracker.com/id?1015542 ([email protected])
http://www.openbsd.org/cgi-bin/cvsweb/src/sys/net/pf_norm.c.diff?r1=1.103&r2=1.104 ([email protected])
http://www.osvdb.org/22732 ([email protected])
http://www.securityfocus.com/bid/16375 ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/24337 ([email protected])
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:07.pf.asc Patch (af854a3a-2127-422b-91ae-364da2661108)
ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2006-004.txt.asc (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/18609 Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://securitytracker.com/id?1015542 (af854a3a-2127-422b-91ae-364da2661108)
http://www.openbsd.org/cgi-bin/cvsweb/src/sys/net/pf_norm.c.diff?r1=1.103&r2=1.104 (af854a3a-2127-422b-91ae-364da2661108)
http://www.osvdb.org/22732 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/16375 (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/24337 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For freebsd's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.