{"cve":"CVE-2009-2661","nvd":{"published":"2009-08-04T16:30:00.483","modified":"2026-06-16T23:09:56.540","status":"Modified","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.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-310"],"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","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"],"products":["strongswan:strongswan"],"source":"nvd","synced_at":"2026-10-19T19:54:26.868835795+00:00"},"epss":{"cve":"CVE-2009-2661","score":0.01577,"percentile":0.75473,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}