CVE-2023-0401

Name of the Vulnerable Software and Affected Versions OpenSSL (affected versions not specified)

Description A NULL pointer can be dereferenced when signatures are being verified on PKCS7 signed or signedAndEnveloped data. This occurs when the hash algorithm used for the signature is known to the OpenSSL library, but the implementation of the hash algorithm is not available, causing the digest initialization to fail. The unavailability of an algorithm can be caused by using FIPS enabled configuration of providers or more commonly by not loading the legacy provider. PKCS7 data is processed by the SMIME library calls and also by the time stamp (TS) library calls. The TLS implementation in OpenSSL does not call these functions; however, third-party applications would be affected if they call these functions to verify signatures on untrusted data.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.