CVE-2009-2661
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.
Key facts
- CVSS score
- 5.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P- Weakness (CWE)
- CWE-310
- EPSS score
- 1.6% (76th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-2654)
- Published
- August 4, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-2654 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
References
- http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.3.x_asn1_length.patch
- http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.x.x_asn1_length.patch(Patch)
- http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html
- http://secunia.com/advisories/36922
- http://up2date.astaro.com/2009/08/up2date_7505_released.html
- http://www.debian.org/security/2009/dsa-1899
- http://www.openwall.com/lists/oss-security/2009/07/27/1
- http://www.vupen.com/english/advisories/2009/2247
- https://lists.strongswan.org/pipermail/announce/2009-July/000056.html(Patch)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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