Home/CVE/The openssl gem for Ruby uses the same initialization vector (IV) in GCM Mode (aes-*-gcm) when the IV is set before the
CVE

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

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.

HIGH · CVSS 7.5 EPSS 0.00557
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  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-326Inadequate Encryption Strength
▤

Affected Products & Versions

2
ruby-lang openssl< 2.0.0
debian linuxall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
RubyGems openssl HIGH fixed in 2.0.0
⚠

Public Exploits & PoCs

1
pocgithub.com · issues/49github.com
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD30 Jan 2017 · 10:59 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
⚑

Vendor Advisories

3
msrcCVE-2016-7798
suse-csafSUSE-SU-2020:1570-1
usnUSN-3365-1
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2016/09/19/9Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/09/30/6Mailing ListPatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/10/01/2Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/93031Third Party AdvisoryVDB Entry
https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.htmlMailing ListThird Party Advisory
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