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CVE-2022-3358 is a flaw in OpenSSL 3.0.0 through 3.0.5 affecting legacy custom ciphers created with EVP_CIPHER_meth_new(). When such a custom cipher is later passed to EVP_EncryptInit_ex2(), EVP_DecryptInit_ex2(), EVP_CipherInit_ex2(), or similar initialization routines, OpenSSL may incorrectly attempt to fetch an equivalent cipher from loaded providers instead of using the supplied legacy custom cipher directly. The lookup is based on the NID assigned during EVP_CIPHER_meth_new(). If an application incorrectly uses NID_undef for that value, the lookup can resolve to the NULL cipher. If the default provider, or another provider exposing the NULL cipher, is loaded, initialization succeeds with NULL encryption rather than the intended algorithm. As a result, data that the application expects to be encrypted is emitted in plaintext. The issue is limited to applications using the deprecated legacy custom cipher API in this specific way; applications that only use SSL/TLS are not affected. The vulnerability is fixed in OpenSSL 3.0.6.
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An OpenSSL vulnerability in custom ciphers that could allow accidental use of NULL encryption.
Unknown
A low-severity OpenSSL flaw where applications using a legacy custom cipher created with EVP_CIPHER_meth_new() and NID_undef may end up using the NULL cipher, causing plaintext to be emitted as ciphertext.
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