CVE-2016-7798: The openssl gem for Ruby uses the same initialization vector (IV) in GCM Mode (aes-*-gcm) when the IV is se...

Security readout for executives and security teams

This CVE is a cryptographic flaw in Ruby's OpenSSL gem. In AES-GCM mode, setting the IV before the key can cause IV reuse, weakening encryption protection. Business urgency depends on whether applications use this specific Ruby OpenSSL pattern. The source bundle does not show active exploitation or a CVSS score. Most likely exposure is Ruby software using the openssl gem for AES-GCM and setting IV before key, especially older Ruby packages distributed before vendor security updates. The provided affected-product metadata is incomplete, so confirm through dependency and package inventory rather than assuming broad exposure. Treat this as targeted remediation rather than an emergency. Prioritize systems handling sensitive encrypted data in Ruby, especially legacy Debian or Ruby deployments. Escalate if code review finds AES-GCM use matching the vulnerable initialization pattern. Mitigation focus: Apply Ruby OpenSSL updates from the upstream fix or vendor advisories.; Update Debian Ruby packages covered by DSA-3966 or DLA 1421-1 where applicable.; Review application code for AES-GCM IV assignment before key assignment..

Prepared

Jun 13, 2026, 06:20 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.