CVE-2006-0905

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Summary

CVECVE-2006-0905
StatePUBLISHED
Assignerfreebsd
Source PriorityCVE Program / NVD first with legacy fallback
Published2006-03-23 11:06:00 UTC
Updated2025-04-03 01:03:51 UTC
DescriptionA "programming error" in fast_ipsec in FreeBSD 4.8-RELEASE through 6.1-STABLE and NetBSD 2 through 3 does not properly update the sequence number associated with a Security Association, which allows packets to pass sequence number checks and allows remote attackers to capture IPSec packets and conduct replay attacks.

Risk And Classification

Primary CVSS: v2.0 7.5 from [email protected]

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

EPSS: 0.012000000 probability, percentile 0.789380000 (date 2026-04-18)

Problem Types: NVD-CWE-Other | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Freebsd Freebsd 4.10 All All All
Operating System Freebsd Freebsd 4.10 release All All
Operating System Freebsd Freebsd 4.10 release_p8 All All
Operating System Freebsd Freebsd 4.10 releng All All
Operating System Freebsd Freebsd 4.11 release_p3 All All
Operating System Freebsd Freebsd 4.11 releng All All
Operating System Freebsd Freebsd 4.11 stable All All
Operating System Freebsd Freebsd 4.8 All All All
Operating System Freebsd Freebsd 4.8 pre-release All All
Operating System Freebsd Freebsd 4.8 release_p7 All All
Operating System Freebsd Freebsd 4.8 releng All All
Operating System Freebsd Freebsd 4.9 All All All
Operating System Freebsd Freebsd 4.9 pre-release All All
Operating System Freebsd Freebsd 4.9 releng All All
Operating System Freebsd Freebsd 5.0 All All All
Operating System Freebsd Freebsd 5.0 alpha All All
Operating System Freebsd Freebsd 5.0 release_p14 All All
Operating System Freebsd Freebsd 5.0 releng All All
Operating System Freebsd Freebsd 5.1 All All All
Operating System Freebsd Freebsd 5.1 alpha All All
Operating System Freebsd Freebsd 5.1 release All All
Operating System Freebsd Freebsd 5.1 release_p5 All All
Operating System Freebsd Freebsd 5.1 releng All All
Operating System Freebsd Freebsd 5.2 All All All
Operating System Freebsd Freebsd 5.2.1 release All All
Operating System Freebsd Freebsd 5.2.1 releng All All
Operating System Freebsd Freebsd 5.3 All All All
Operating System Freebsd Freebsd 5.3 release All All
Operating System Freebsd Freebsd 5.3 releng All All
Operating System Freebsd Freebsd 5.3 stable All All
Operating System Freebsd Freebsd 5.4 pre-release All All
Operating System Freebsd Freebsd 5.4 release All All
Operating System Freebsd Freebsd 5.4 releng All All
Operating System Freebsd Freebsd 5.4 stable All All
Operating System Freebsd Freebsd 6.0 release All All
Operating System Freebsd Freebsd 6.0 stable All All
Operating System Netbsd Netbsd 2.0 All All All
Operating System Netbsd Netbsd 3.0 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
IPSec Bug in 'xform_esp.c' May Let Remote Users Bypass Anti-Replay Sequence Number Checking - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 securitytracker.com
ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2006-011.txt.asc af854a3a-2127-422b-91ae-364da2661108 ftp.netbsd.org
FreeBSD IPsec Sequence Number Verification Bypass - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Patch, Vendor Advisory
IBM X-Force Exchange af854a3a-2127-422b-91ae-364da2661108 exchange.xforce.ibmcloud.com
ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:11.ipsec.asc af854a3a-2127-422b-91ae-364da2661108 ftp.freebsd.org Patch, Vendor Advisory
www.osvdb.org/24068 af854a3a-2127-422b-91ae-364da2661108 www.osvdb.org
FreeBSD IPsec Replay Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Patch
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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