Vulnerability Details : 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.
Products affected by CVE-2018-16395
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.4:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:2.6.0:preview1:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:2.6.0:preview2:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:openssl:*:*:*:*:*:ruby:*:*
Threat overview for CVE-2018-16395
Top countries where our scanners detected CVE-2018-16395
Top open port discovered on systems with this issue
80
IPs affected by CVE-2018-16395 3,733
Threat actors abusing to this issue?
Yes
Find out if you* are
affected by CVE-2018-16395!
*Directly or indirectly through your vendors, service providers and 3rd parties.
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attack surface intelligence
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Exploit prediction scoring system (EPSS) score for CVE-2018-16395
8.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 91 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-16395
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
References for CVE-2018-16395
-
https://access.redhat.com/errata/RHSA-2019:2565
RHSA-2019:2565 - Security Advisory - Red Hat Customer Portal
-
https://www.oracle.com/security-alerts/cpujan2020.html
Oracle Critical Patch Update Advisory - January 2020
-
https://access.redhat.com/errata/RHSA-2018:3738
RHSA-2018:3738 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://usn.ubuntu.com/3808-1/
USN-3808-1: Ruby vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://security.netapp.com/advisory/ntap-20190221-0002/
November 2018 Ruby Vulnerabilities in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://lists.debian.org/debian-lts-announce/2018/10/msg00020.html
[SECURITY] [DLA 1558-1] ruby2.1 security updateThird Party Advisory
-
https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-3-8-released/
Ruby 2.3.8 ReleasedRelease Notes;Vendor Advisory
-
https://access.redhat.com/errata/RHSA-2019:1948
RHSA-2019:1948 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://access.redhat.com/errata/RHSA-2018:3731
RHSA-2018:3731 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://access.redhat.com/errata/RHSA-2018:3729
RHSA-2018:3729 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://www.ruby-lang.org/en/news/2018/11/06/ruby-2-6-0-preview3-released/
Ruby 2.6.0-preview3 ReleasedRelease Notes;Vendor Advisory
-
https://access.redhat.com/errata/RHSA-2018:3730
RHSA-2018:3730 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://www.ruby-lang.org/en/news/2018/10/17/openssl-x509-name-equality-check-does-not-work-correctly-cve-2018-16395/
CVE-2018-16395: OpenSSL::X509::Name equality check does not work correctlyMitigation;Vendor Advisory
-
https://hackerone.com/reports/387250
#387250 OpenSSL::X509::Name Equality Check Does Not Work, Patch includedPatch;Third Party Advisory
-
https://www.debian.org/security/2018/dsa-4332
Debian -- Security Information -- DSA-4332-1 ruby2.3Third Party Advisory
-
https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-4-5-released/
Ruby 2.4.5 ReleasedRelease Notes;Vendor Advisory
-
http://www.securitytracker.com/id/1042105
Ruby OpenSSL::X509::Name() May Fail to Prevent Remote Users from Bypassing Security Restrictions on the Target System - SecurityTrackerThird Party Advisory;VDB Entry
-
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
[security-announce] openSUSE-SU-2019:1771-1: important: Security updateMailing List;Third Party Advisory
-
https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-5-2-released/
Ruby 2.5.2 ReleasedRelease Notes;Vendor Advisory
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