Vulnerability Report

CVE-2018-16395

Title: Ruby-Lang Ruby Cryptographic Failures

Cryptographic Failures

Proof Of Concept

No public PoC currently indexed for CVE-2018-16395.

CWE Category NVD-CWE-noinfo
Published Date Nov 16, 2018
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 9.8 CVSS v3.0
Exploit Probability (EPSS)
4.21%

Vulnerability Summary

CVE-2018-16395: An issue was discovered in the OpenSSL library in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. When two OpenSSL::X509::Name objects are compared using ==, depending on the ordering, non-equal objects may return true. When the first argument is one character longer than the second, or the second argument contains a character that is one less than a character in the same position of the first argument, the result of == will be true. This could be leveraged to create an illegitimate certificate that may be accepted as legitimate and then used in signing or encryption operations.

Impacted Vendors

R
ruby-lang 2
H
hpe 1
Y
yukihiro_matsumoto 1
R
redhat 1

Reference Links

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html http://www.securitytracker.com/id/1042105 https://access.redhat.com/errata/RHSA-2018:3729 https://access.redhat.com/errata/RHSA-2018:3730 https://access.redhat.com/errata/RHSA-2018:3731 https://access.redhat.com/errata/RHSA-2018:3738 https://access.redhat.com/errata/RHSA-2019:1948 https://access.redhat.com/errata/RHSA-2019:2565 https://hackerone.com/reports/387250 https://lists.debian.org/debian-lts-announce/2018/10/msg00020.html https://security.netapp.com/advisory/ntap-20190221-0002/ https://usn.ubuntu.com/3808-1/ https://www.debian.org/security/2018/dsa-4332 https://www.oracle.com/security-alerts/cpujan2020.html https://www.ruby-lang.org/en/news/2018/10/17/openssl-x509-name-equality-check-does-not-work-correctly-cve-2018-16395/ https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-3-8-released/ https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-4-5-released/ https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-5-2-released/ https://www.ruby-lang.org/en/news/2018/11/06/ruby-2-6-0-preview3-released/ http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html http://www.securitytracker.com/id/1042105 https://access.redhat.com/errata/RHSA-2018:3729 https://access.redhat.com/errata/RHSA-2018:3730 https://access.redhat.com/errata/RHSA-2018:3731 https://access.redhat.com/errata/RHSA-2018:3738 https://access.redhat.com/errata/RHSA-2019:1948 https://access.redhat.com/errata/RHSA-2019:2565 https://hackerone.com/reports/387250 https://lists.debian.org/debian-lts-announce/2018/10/msg00020.html https://security.netapp.com/advisory/ntap-20190221-0002/ https://usn.ubuntu.com/3808-1/ https://www.debian.org/security/2018/dsa-4332 https://www.oracle.com/security-alerts/cpujan2020.html https://www.ruby-lang.org/en/news/2018/10/17/openssl-x509-name-equality-check-does-not-work-correctly-cve-2018-16395/ https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-3-8-released/ https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-4-5-released/ https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-5-2-released/ https://www.ruby-lang.org/en/news/2018/11/06/ruby-2-6-0-preview3-released/
CVSS v3.0
Source Entity [email protected]
Severity CRITICAL
9.8
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
Source Entity [email protected]
Severity HIGH
7.5
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2018-16395 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.