The ASN.1 parser (pluto/asn1.c, libstrongswan/asn1/asn1.c,
libstrongswan/asn1/asn1_parser.c) in (a) strongSwan 2.8 before 2.8.10, 4.2
before 4.2.16, and 4.3 before 4.3.2; and (b) openSwan 2.6 before 2.6.22 and
2.4 before 2.4.15 allows remote attackers to cause a denial of service
(pluto IKE daemon crash) via an X.509 certificate with (1) crafted Relative
Distinguished Names (RDNs), (2) a crafted UTCTIME string, or (3) a crafted
GENERALIZEDTIME string.