CVE-2009-2661

N/A Unknown
Published: August 04, 2009 Modified: April 23, 2026
View on NVD

Description

The asn1_length function in strongSwan 2.8 before 2.8.11, 4.2 before 4.2.17, and 4.3 before 4.3.3 does not properly handle X.509 certificates with crafted Relative Distinguished Names (RDNs), which allows remote attackers to cause a denial of service (pluto IKE daemon crash) via malformed ASN.1 data. NOTE: this is due to an incomplete fix for CVE-2009-2185.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

Login to generate AI explanation

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.3.x_asn1_length.patch
Source: cve@mitre.org
http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.x.x_asn1_length.patch
Source: cve@mitre.org
Patch
http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html
Source: cve@mitre.org
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html
Source: cve@mitre.org
http://secunia.com/advisories/36922
Source: cve@mitre.org
http://up2date.astaro.com/2009/08/up2date_7505_released.html
Source: cve@mitre.org
http://www.debian.org/security/2009/dsa-1899
Source: cve@mitre.org
http://www.openwall.com/lists/oss-security/2009/07/27/1
Source: cve@mitre.org
http://www.vupen.com/english/advisories/2009/2247
Source: cve@mitre.org
https://lists.strongswan.org/pipermail/announce/2009-July/000056.html
Source: cve@mitre.org
Patch
http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.3.x_asn1_length.patch
Source: af854a3a-2127-422b-91ae-364da2661108
http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.x.x_asn1_length.patch
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://secunia.com/advisories/36922
Source: af854a3a-2127-422b-91ae-364da2661108
http://up2date.astaro.com/2009/08/up2date_7505_released.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.debian.org/security/2009/dsa-1899
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2009/07/27/1
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.vupen.com/english/advisories/2009/2247
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.strongswan.org/pipermail/announce/2009-July/000056.html
Source: af854a3a-2127-422b-91ae-364da2661108
Patch

20 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
EPSS (Exploit Probability)
1.8%
83th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-310

Affected Vendors

strongswan

Related CVEs

CVE-2026-6786 8.1
CVE-2026-6785 8.1
CVE-2026-7041 3.7
CVE-2026-7039 7.8
CVE-2026-7038 3.3