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CVE-2018-16395 Affecting ruby2.5 package, versions <2.5.3-1

0.0
critical

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.75% (81st percentile)
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NVD
9.8 critical
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SUSE
6.8 medium
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Red Hat
7.5 high

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  • Snyk ID SNYK-DEBIAN10-RUBY25-384391
  • published 19 Oct 2018
  • disclosed 16 Nov 2018
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Introduced: 19 Oct 2018

CVE-2018-16395 Open this link in a new tab

How to fix?

Upgrade Debian:10 ruby2.5 to version 2.5.3-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby2.5 package and not the ruby2.5 package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

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.

References