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CVE-2018-16395
CVE information
Published
Last Modified
CVSSv2.0 Severity
CVSSv3.1 Severity
Impact Analysis
Description
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..
CVSSv2.0 Score
- Severity
- High
- Base Score
- 7.5/10
- Exploit Score
- 10/10
- Access Vector
- Network
- Access Complexity
- Low
- Authentication Required
- None
- Impact Score
- 6.4/10
- Confidentiality Impact
- Partial
- Availability Impact
- Partial
- Integrity Impact
- Partial
CVSSv3.1 Score
- Severity
- Critical
- Base Score
- 9.8/10
- Exploit Score
- 3.9/10
- Access Vector
- Network
- Access Complexity
- Low
- Privileges Required
- None
- Impact Score
- 5.9/10
- Confidentiality Impact
- High
- Availability Impact
- High
- Integrity Impact
- High
- Scope
- Unchanged
- User Interaction
- None
Products Affected
CPE | Affected | Vulnerable | Excluding | Edit |
---|---|---|---|---|
cpe:2.3:a:ruby-lang:ruby:2.6.0:preview1:*:*:*:*:*:* |
Yes
|
- | - | |
cpe:2.3:a:ruby-lang:ruby:2.6.0:preview2:*:*:*:*:*:* |
Yes
|
- | - | |
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* |
Yes
|
2.3.0 | - | |
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* |
Yes
|
2.4.0 | - | |
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* |
Yes
|
2.5.0 | - | |
cpe:2.3:a:ruby-lang:openssl:*:*:*:*:*:ruby:*:* |
Yes
|
- | 2.1.2 | |
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* |
Yes
|
- | - | |
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* |
Yes
|
- | - | |
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* |
Yes
|
- | - | |
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* |
Yes
|
- | - | |
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
Yes
|
- | - | |
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
Yes
|
- | - | |
cpe:2.3:o:redhat:enterprise_linux:7.4:*:*:*:*:*:*:* |
Yes
|
- | - |
References
- https://www.ruby-lang.org/en/news/2018/11/06/ruby-2-6-0-preview3-released/
- https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-5-2-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-2-3-8-released/
- https://www.ruby-lang.org/en/news/2018/10/17/openssl-x509-name-equality-check-does-not-w
- https://lists.debian.org/debian-lts-announce/2018/10/msg00020.html
- https://hackerone.com/reports/387250
- https://www.debian.org/security/2018/dsa-4332
- https://usn.ubuntu.com/3808-1/
- http://www.securitytracker.com/id/1042105
- https://access.redhat.com/errata/RHSA-2018:3738
- https://access.redhat.com/errata/RHSA-2018:3731
- https://access.redhat.com/errata/RHSA-2018:3730
- https://access.redhat.com/errata/RHSA-2018:3729
- https://security.netapp.com/advisory/ntap-20190221-0002/
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
- https://access.redhat.com/errata/RHSA-2019:1948
- https://access.redhat.com/errata/RHSA-2019:2565
- https://www.oracle.com/security-alerts/cpujan2020.html