CVE-2023-0286

There is a type confusion vulnerability relating to X.400 address processing inside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING but the public structure definition for GENERAL_NAME incorrectly specified the type of the x400Address field as ASN1_TYPE. This field is subsequently interpreted by the OpenSSL function GENERAL_NAME_cmp as an ASN1_TYPE rather than an ASN1_STRING. When CRL checking is enabled (i.e. the application sets the X509_V_FLAG_CRL_CHECK flag), this vulnerability may allow an attacker to pass arbitrary pointers to a memcmp call, enabling them to read memory contents or enact a denial of service. In most cases, the attack requires the attacker to provide both the certificate chain and CRL, neither of which need to have a valid signature. If the attacker only controls one of these inputs, the other input must already contain an X.400 address as a CRL distribution point, which is uncommon. As such, this vulnerability is most likely to only affect applications which have implemented their own functionality for retrieving CRLs over a network.

• openssl openssl (>= 1.0.2 < 1.0.2zg) • openssl openssl (>= 1.1.1 < 1.1.1t) • openssl openssl (>= 3.0.0 < 3.0.8) • stormshield stormshield management center (< 3.3.3) • stormshield stormshield network security (>= 2.7.0 < 2.7.11) • stormshield stormshield network security (>= 2.8.0 < 3.7.34) • stormshield stormshield network security (>= 3.8.0 < 3.11.22) • stormshield stormshield network security (>= 4.0.0 < 4.3.16) • stormshield stormshield network security (>= 4.4.0 < 4.6.3)