CVE-2009-2661

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.

How to fix CVE-2009-2661

To remediate CVE-2009-2661, upgrade the affected package to a fixed version below.

• Debian/strongswan—upgrade to 4.3.2-1.1 or later

Is CVE-2009-2661 being exploited?

Low — EPSS is 1.8%, meaning exploitation activity has not been observed at scale.

Affected packages (1)

• from 0, < 4.3.2-1.1

References (1)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2009-2661