CVE-2018-16395

Advisory lineage Upstream: 0 Downstream: 16
Modified
Published: 16 Nov 2018, 18:00
Last modified:05 Aug 2024, 10:24

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
v3.0 (nvd)
EPSS Score
4.21% LOW
4% probability -0.21%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

16 Nov 2018, 18:00
Published
Vulnerability first disclosed
05 Aug 2024, 10:24
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.0•CRITICAL•Score: 9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • v2.0•HIGH•Score: 7.5AV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 4.21%• Percentile: 89%

Affected Systems

  • canonical•ubuntu_linux

    14.04 | 16.04 | 18.04 | 18.10

  • debian•debian_linux

    8.0 | 9.0

  • redhat•enterprise_linux

    7.4

  • ruby-lang•openssl

    < 2.1.2

  • ruby-lang•ruby

    ≥ 2.3.0, ≤ 2.3.7 | ≥ 2.4.0, ≤ 2.4.4 | ≥ 2.5.0, ≤ 2.5.1 | 2.6.0:preview1 | 2.6.0:preview2

References (19)