Vulnerability in Ruby-Lang OpenSSL
CVE-2016-7798
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.032 (87.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000
Affected products
- Ruby-Lang OpenSSL
- Debian Linux — versions 8.0, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.openwall.com/lists/oss-security/2016/09/30/6 (mailing-list, Patch, Mailing List, Third Party Advisory)
- www.debian.org/security/2017/dsa-3966 (vendor-advisory, Third Party Advisory)
- github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062 (Patch, Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/10/01/2 (mailing-list, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/07/msg00012.html (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/09/19/9 (mailing-list, Mailing List, Third Party Advisory)
- www.securityfocus.com/bid/93031 (VDB Entry, Third Party Advisory, vdb-entry)
- github.com/ruby/openssl/issues/49 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-7798?
- CVE-2016-7798 is a high-severity vulnerability in Ruby-Lang OpenSSL, classified under Inadequate Encryption Strength. CVSS score: 7.5/10. Published 2017-01-30.
- How severe is CVE-2016-7798?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2016-7798 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.