RHSA-2021:1266: Red Hat Security Advisory: perl security update

An update for perl is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update Support, and Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions. 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.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)
• perl: corruption of intermediate language state of compiled regular expression due to integer overflow leads to DoS (CVE-2020-10878)
• 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. Related CVEs:
• CVE-2020-10543: perl: heap-based buffer overflow in regular expression compiler leads to DoS
• CVE-2020-10878: perl: corruption of intermediate language state of compiled regular expression due to integer overflow leads to DoS
• CVE-2020-12723: perl: corruption of intermediate language state of compiled regular expression due to recursive S_study_chunk() calls leads to DoS