CVE-2016-7798 OpenSSL gem for Ruby using inadequate encryption strength
The Ruby OpenSSL gem reuses initialization vectors in GCM mode, allowing attackers to bypass encryption protection mechanisms.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-7798?
CVE-2016-7798 is a high-severity vulnerability in Debian Debian Linux, published on 30 Jan 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-326
Which versions are affected by CVE-2016-7798?
2 open source packages ship an affected version, including openssl. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
openssl RubyGems | All versions | 2.0.0 |
openssl RubyGems | All versions | 2.0.0 |
Products include Debian Debian Linux, Ruby-Lang Openssl.
How do I fix CVE-2016-7798?
Upgrade openssl to 2.0.0 or later.
Is CVE-2016-7798 being exploited?
There is no known exploitation of CVE-2016-7798 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2016-7798, GHSA-6h88-qjpv-p32m, MGASA-2016-0342, UBUNTU-CVE-2016-7798.