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Medium RLSA-2023:3821 3 CVEs

Moderate: ruby:2.7 security, bug fix, and enhancement update

Published Aug 31, 2023 · Updated Feb 4, 2026

Ecosystem: Rocky Linux

Summary

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks.

The following packages have been upgraded to a later upstream version: ruby (2.7). (BZ#2189465)

Security Fix(es):

* ruby/cgi-gem: HTTP response splitting in CGI (CVE-2021-33621)

* ruby: ReDoS vulnerability in URI (CVE-2023-28755)

* ruby: ReDoS vulnerability in Time (CVE-2023-28756)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 6

ReleasePackageFixed in
Rocky Linux · 8 ruby 0:2.7.8-139.module+el8.8.0+1320+d2449f6f
Rocky Linux · 8 rubygem-abrt 0:0.4.0-1.module+el8.5.0+668+665814fa
Rocky Linux · 8 rubygem-bson 0:4.8.1-1.module+el8.4.0+594+11b6673a
Rocky Linux · 8 rubygem-mongo 0:2.11.3-1.module+el8.4.0+594+11b6673a
Rocky Linux · 8 rubygem-mysql2 0:0.5.3-1.module+el8.5.0+668+665814fa
Rocky Linux · 8 rubygem-pg 0:1.2.3-1.module+el8.5.0+668+665814fa

Vulnerabilities 3

  • High 8.8
    CVE-2021-33621

    HTTP response splitting in CGI

    The cgi gem before 0.1.0.2, 0.2.x before 0.2.2, and 0.3.x before 0.3.5 for Ruby allows HTTP response splitting. This is relevant to applications that use untrusted user input either to generate an HTTP response or to create a CGI::Cookie object.

    ruby2.3 ruby ruby2.5 jruby Debian Ubuntu Alpine RubyGems
  • High 7.5
    CVE-2023-28756

    Ruby Time component ReDoS issue

    A ReDoS issue was discovered in the Time component through 0.2.1 in Ruby through 3.2.1. The Time parser mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing strings to Time objects. The fixed versions are …

    ruby2.3 ruby ruby2.5 jruby Debian Ubuntu Alpine Wolfi RubyGems
  • Medium 5.3
    CVE-2023-28755

    Ruby URI component ReDoS issue

    A ReDoS issue was discovered in the URI component through 0.12.0 in Ruby through 3.2.1. The URI parser mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing strings to URI objects. The fixed versions are 0.…

    ruby2.3 ruby ruby2.5 jruby Debian Ubuntu Alpine Wolfi RubyGems

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2149706
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2184059
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2184061
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2189465