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Red Hat Enterprise Linux 8: RHSA-2021:0557-01 Moderate Perl DoS Fix

red hat
Calendar Grey February 16, 2021
Dist Redhat Esm H88
Crucial update alert for Red Hat Enterprise Linux 8's perl package. This fix addresses a moderate severity Denial of Service (DoS) vulnerability. Details here
An update for perl is now available for Red Hat Enterprise Linux 8

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

Summary

Perl is a high-level programming language that is commonly used for system administration utilities and web programming.
Security Fix(es):
* 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.

Topics%20covered

Topics Covered

security advisory moderate security issue update red hat DoS issue DoS Red Hat Enterprise Linux moderate impact security patch perl system update perl update

References

https://access.redhat.com/security/cve/CVE-2020-12723 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux AppStream (v. 8):
aarch64: perl-5.26.3-417.el8_3.aarch64.rpm perl-Devel-Peek-1.26-417.el8_3.aarch64.rpm perl-Devel-Peek-debuginfo-1.26-417.el8_3.aarch64.rpm perl-IO-debuginfo-1.38-417.el8_3.aarch64.rpm perl-Time-Piece-1.31-417.el8_3.aarch64.rpm perl-Time-Piece-debuginfo-1.31-417.el8_3.aarch64.rpm perl-debuginfo-5.26.3-417.el8_3.aarch64.rpm perl-debugsource-5.26.3-417.el8_3.aarch64.rpm perl-devel-5.26.3-417.el8_3.aarch64.rpm perl-interpreter-debuginfo-5.26.3-417.el8_3.aarch64.rpm perl-libs-debuginfo-5.26.3-417.el8_3.aarch64.rpm perl-tests-5.26.3-417.el8_3.aarch64.rpm
noarch: perl-Attribute-Handlers-0.99-417.el8_3.noarch.rpm perl-Devel-SelfStubber-1.06-417.el8_3.noarch.rpm perl-ExtUtils-Embed-1.34-417.el8_3.noarch.rpm perl-ExtUtils-Miniperl-1.06-417.el8_3.noarch.rpm perl-Locale-Maketext-Simple-0.21-417.el8_3.noarch.rpm perl-Memoize-1.03-417.el8_3.noarch.rpm perl-Module-Loaded-0.08-417.el8_3.noarch.rpm perl-Net-Ping-2.55-417.el8_3.noarch.rpm perl-Pod-Html-1.22.02-417.el8_3.noarch.rpm perl-SelfLoader-1.23-417.el8_3.noarch.rpm perl-Test-1.30-417.el8_3.noarch.rpm perl-libnetcfg-5.26.3-417.el8_3.noarch.rpm perl-open-1.11-417.el8_3.noarch.rpm perl-utils-5.26.3-417.el8_3.noarch.rpm
ppc64le: perl-5.26.3-417.el8_3.ppc64le.rpm

Read the Full Advisory


Advisory ID: RHSA-2021:0557-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0557
Issue date: 2021-02-16

Topic

An update for perl is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate security issue update red hat DoS issue DoS Red Hat Enterprise Linux moderate impact security patch perl system update perl update

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

1838000 - CVE-2020-12723 perl: corruption of intermediate language state of compiled regular expression due to recursive S_study_chunk() calls leads to DoS

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