National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-7798 Detail

Current 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.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 3.9


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Insufficient_Info
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:ruby-lang:openssl:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
2.3.1


Change History

4 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-7798
NVD Published Date:
01/30/2017
NVD Last Modified:
07/14/2018