CVE-2013-6075: Strongswan

Medium severity, CVSS 5.0. EPSS: 2.4% chance of exploitation in the next 30 days.

The compare_dn function in utils/identification.c in strongSwan 4.3.3 through 5.1.1 allows (1) remote attackers to cause a denial of service (out-of-bounds read, NULL pointer dereference, and daemon crash) or (2) remote authenticated users to impersonate arbitrary users and bypass access restrictions via a crafted ID_DER_ASN1_DN ID, related to an "insufficient length check" during identity comparison.

Affected products

• Strongswan Strongswan: version 4.3.3 only; version 4.3.4 only; version 4.3.5 only; version 4.3.6 only; version 4.3.7 only; version 4.4.0 only; …

Published 2013-11-02. Last modified 2026-06-16.