Vulnerability Report

CVE-2016-7798

Title: Ruby-Lang Openssl Cryptographic Failures

Other

Proof Of Concept

No public PoC currently indexed for CVE-2016-7798.

CWE Category CWE-326

Published Date Jan 30, 2017

Modified Date May 13, 2026

Exploit Status Not Found

Score 7.5 CVSS v3.1

Exploit Probability (EPSS)

0.56%

Vulnerability Summary

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.

Impacted Vendors

redhat 1

hpe 1

ruby-lang 1

Reference Links

http://www.openwall.com/lists/oss-security/2016/09/19/9 http://www.openwall.com/lists/oss-security/2016/09/30/6 http://www.openwall.com/lists/oss-security/2016/10/01/2 http://www.securityfocus.com/bid/93031 https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062 https://github.com/ruby/openssl/issues/49 https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html https://www.debian.org/security/2017/dsa-3966 http://www.openwall.com/lists/oss-security/2016/09/19/9 http://www.openwall.com/lists/oss-security/2016/09/30/6 http://www.openwall.com/lists/oss-security/2016/10/01/2 http://www.securityfocus.com/bid/93031 https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062 https://github.com/ruby/openssl/issues/49 https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html https://www.debian.org/security/2017/dsa-3966

CVSS v3.1

Source Entity [email protected]

Severity HIGH

7.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

5.0

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:L/Au:N/C:P/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns