RHSA-2021:0343 — Security Advisory
Red Hat Security Advisory: perl security update
Severity
ModerateRed Hat Product Security
Products
Official CSAF product identity
Published · February 2, 2021
Updated · October 16, 2026
Topic
An update for perl is now available for Red Hat Enterprise Linux 7.
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
Perl is a high-level programming language that is commonly used for system administration utilities and web programming.
Security Fix(es):
-
perl: heap-based buffer overflow in regular expression compiler leads to DoS (CVE-2020-10543)
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perl: corruption of intermediate language state of compiled regular expression due to integer overflow leads to DoS (CVE-2020-10878)
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perl: corruption of intermediate language state of compiled regular expression due to recursive S_study_chunk() calls leads to DoS (CVE-2020-12723)
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.