#VU68116 Inadequate Encryption Strength in OpenSSL - CVE-2022-3358
Published: October 11, 2022 / Updated: November 8, 2022
Vulnerability identifier: #VU68116
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:A/U:Green
CVE-ID: CVE-2022-3358
CWE-ID: CWE-326
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
OpenSSL
OpenSSL
Software vendor:
OpenSSL Software Foundation
OpenSSL Software Foundation
Description
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 updates from vendor's website.