libssl3t64: Issue summary: Processing a maliciously formatted PKCS12 file may leadOpenSSLto crash leading to a potential Denial o...

Issue summary: Processing a maliciously formatted PKCS12 file may leadOpenSSLto crash leading to a potential Denial of Service attackImpact summary: Applications loading files in the PKCS12 format fromuntrustedsources might terminate abruptly.A file in PKCS12 format can contain certificates and keys and may come fromanuntrusted source. The PKCS12 specification allows certain fields to beNULL, butOpenSSL does not correctly check for this case. This can lead to a NULLpointerdereference that results in OpenSSL crashing. If an application processesPKCS12files from an untrusted source using the OpenSSL APIs then that applicationwillbe vulnerable to this issue.OpenSSL APIs that are vulnerable to this are: PKCS12_parse(),PKCS12_unpack_p7data(), PKCS12_unpack_p7encdata(),PKCS12_unpack_authsafes()and PKCS12_newpass().We have also fixed a similar issue in SMIME_write_PKCS7(). However sincethisfunction is related to writing data we do not consider it securitysignificant.The FIPS modules in 3.2, 3.1 and 3.0 are not affected by this issue.

Where it's fixed