strongSwan vulnerabilities

The ASN.1 parser in strongSwan before version 5.5.3 improperly handles CHOICE types when the x509 plugin is enabled, allowing remote attackers to cause a denial of service (infinite loop) via a crafted certificate.

strongSwan versions 5.2.2 and 5.3.0 allow remote attackers to cause a denial of service (daemon crash) or execute arbitrary code.

libcharon in strongSwan 5.9.7 through 6.0.7 mishandles behavioral workflow in the IKEv2 state machine. Because CREATE_CHILD_SA requests are mishandled, there can be an authentication bypass.

strongSwan 4.5.0 through 6.0.7 has incorrect access control in the eap-ttls and eap-peap plugins because the inner EAP identity may be missing or mismatched.

libcharon in strongSwan 6.0.0 through 6.0.7 has a use-after-free in IKEv2 rekeying collision handling.

strongSwan 5.1.3 through 6.0.7 has an infinite loop in the x509 plugin's attribute certificate parser for ietfAttrSyntax.

strongSwan 4.2.0 through 6.0.7 has a missing release of memory after its effective lifetime in the x509 plugin's attribute certificate parser.

strongSwan 4.2.0 through 6.0.7 has a NULL pointer dereference in the x509 plugin's attribute certificate parser.

strongSwan 4.6.2 through 6.0.7 has an infinite loop in PKCS#5 decryption.

libcharon in strongSwan 4.1.2 through 6.0.7 has a missing release of memory after its effective lifetime in the IKE message parser.

strongSwan 4.1.10 through 6.0.7 allows a NULL pointer dereference in the eap-aka plugin.

strongSwan 5.0.2 through 6.0.7 allows PKCS#7 certificate enumeration in the openssl plugin that leads to a lack of release of memory after its effective lifetime.

strongSwan 5.0.2 through 6.0.7 has an Expired Pointer Dereference in PKCS#7 parsing in the openssl plugin.

In strongSwan before 6.0.7, identity parsing/cloning is mishandled. Parsed EAP-Identities that result in an empty but non-NULL encoding are not correctly cloned and trigger a double-free once the duplicates are destroyed.

strongSwan versions 4.5.0 prior to 6.0.5 contain an integer underflow vulnerability in the EAP-TTLS AVP parser. Unauthenticated remote attackers can send crafted AVP data with invalid length fields during IKEv2 authentication, causing the charon IKE daemon to crash.