SB2022101132 - Failure to encrypt data in OpenSSL

Description

This security bulletin contains information about 1 security vulnerability.

1) Inadequate Encryption Strength (CVE-ID: CVE-2022-3358)

The vulnerability allows a remote attacker to decrypt traffic.

The vulnerability exists due to an error in openssl implementation when handling legacy custom ciphers with NID_undef passed to the EVP_EncryptInit_ex2(), EVP_DecryptInit_ex2() and EVP_CipherInit_ex2() functions. Under certain conditions openssl can fail to select a proper cipher and use NULL instead, which corresponds to sending data in plain text.

Note, applications are only affected by this issue if they call EVP_CIPHER_meth_new() using NID_undef and subsequently use it in a call to an encryption/decryption initialisation function.

Remediation

Install update from vendor's website.

References

• https://www.openssl.org/news/secadv/20221011.txt
• https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=5485c56679d7c49b96e8fc8ca708b0b7e7c03c4b