RHSA-2021:2792MediumCVSS 8.6

Red Hat Security Advisory: perl security and bug fix update

Published
July 20, 2021
Last Modified
October 15, 2026

🔗 CVE IDs covered (2)

CVE-2020-10543 →CVE-2020-10878 →

📋 Description

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

🎯 Affected products131

  • Red Hat Enterprise Linux AppStream EUS (v. 8.2)
  • Red Hat Enterprise Linux BaseOS EUS (v. 8.2)
  • perl-4:5.26.3-418.el8_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)
  • perl-4:5.26.3-418.el8_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)
  • perl-4:5.26.3-418.el8_2.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)
  • perl-4:5.26.3-418.el8_2.1.src as a component of Red Hat Enterprise Linux BaseOS EUS (v. 8.2)
  • perl-4:5.26.3-418.el8_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)
  • perl-Attribute-Handlers-0:0.99-418.el8_2.1.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)
  • perl-Devel-Peek-0:1.26-418.el8_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)
  • perl-Devel-Peek-0:1.26-418.el8_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)
  • perl-Devel-Peek-0:1.26-418.el8_2.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)
  • perl-Devel-Peek-0:1.26-418.el8_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)
  • perl-Devel-Peek-debuginfo-0:1.26-418.el8_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)
  • perl-Devel-Peek-debuginfo-0:1.26-418.el8_2.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v. 8.2)
  • perl-Devel-Peek-debuginfo-0:1.26-418.el8_2.1.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)
  • perl-Devel-Peek-debuginfo-0:1.26-418.el8_2.1.i686 as a component of Red Hat Enterprise Linux BaseOS EUS (v. 8.2)
  • perl-Devel-Peek-debuginfo-0:1.26-418.el8_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)
  • perl-Devel-Peek-debuginfo-0:1.26-418.el8_2.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v. 8.2)
  • perl-Devel-Peek-debuginfo-0:1.26-418.el8_2.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)
  • perl-Devel-Peek-debuginfo-0:1.26-418.el8_2.1.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v. 8.2)
  • perl-Devel-Peek-debuginfo-0:1.26-418.el8_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)
  • perl-Devel-Peek-debuginfo-0:1.26-418.el8_2.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v. 8.2)
  • perl-Devel-SelfStubber-0:1.06-418.el8_2.1.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)
  • perl-Errno-0:1.28-418.el8_2.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v. 8.2)
  • perl-Errno-0:1.28-418.el8_2.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v. 8.2)
  • perl-Errno-0:1.28-418.el8_2.1.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v. 8.2)
  • perl-Errno-0:1.28-418.el8_2.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v. 8.2)
  • perl-ExtUtils-Embed-0:1.34-418.el8_2.1.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)
  • perl-ExtUtils-Miniperl-0:1.06-418.el8_2.1.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)
  • perl-IO-0:1.38-418.el8_2.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v. 8.2)
  • +101 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: To mitigate this flaw, developers should not allow untrusted regular expressions to be compiled by the Perl regular expression compiler.

🔗 References (6)