RHSA-2022:6856 - Security Advisory

Topic

An update for rh-ruby27-ruby is now available for Red Hat Software Collections.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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: rh-ruby27-ruby (2.7.6). (BZ#2128631)

Security Fix(es):

• ruby: buffer overflow in CGI.escape_html (CVE-2021-41816)
• ruby: Regular expression denial of service vulnerability of Date parsing methods (CVE-2021-41817)
• ruby: Cookie prefix spoofing in CGI::Cookie.parse (CVE-2021-41819)
• Ruby: Buffer overrun in String-to-Float conversion (CVE-2022-28739)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7 x86_64
• Red Hat Software Collections (for RHEL Server for System Z) 1 for RHEL 7 s390x
• Red Hat Software Collections (for RHEL Server for IBM Power LE) 1 for RHEL 7 ppc64le
• Red Hat Software Collections (for RHEL Workstation) 1 for RHEL 7 x86_64

Fixes

• BZ - 2025104 - CVE-2021-41817 ruby: Regular expression denial of service vulnerability of Date parsing methods
• BZ - 2026752 - CVE-2021-41816 ruby: buffer overflow in CGI.escape_html
• BZ - 2026757 - CVE-2021-41819 ruby: Cookie prefix spoofing in CGI::Cookie.parse
• BZ - 2075687 - CVE-2022-28739 Ruby: Buffer overrun in String-to-Float conversion
• BZ - 2128631 - rh-ruby27-ruby: Rebase to the latest Ruby 2.7 release [rhscl-3] [rhscl-3.8.z]

CVEs

• CVE-2021-41816
• CVE-2021-41817
• CVE-2021-41819
• CVE-2022-28739

References

• https://access.redhat.com/security/updates/classification/#moderate