Incorrect handling of initialization vector in the GCM mode in OpenSSL
Published: October 24, 2017
SECURITY IDENTIFIERS
- CVE: CVE-2016-7798 (NVD)
- GHSA: GHSA-6h88-qjpv-p32m
- Vendor Advisory: https://github.com/ruby/openssl/issues/49
GEM
SEVERITY
PATCHED VERSIONS
>= 2.0.0
DESCRIPTION
The openssl gem for Ruby uses the same initialization vector (IV) in GCM Mode (aes-*-gcm) when the IV is set before the key, which makes it easier for context-dependent attackers to bypass the encryption protection mechanism.