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Red Hat: RHSA-2021-0883-01 Moderate: Perl DoS Threat Update

red hat
Calendar Grey March 16, 2021
Dist Redhat Esm H88
An updated Perl version for Red Hat Linux is now available, fixing several moderate security vulnerabilities, particularly buffer overflow issues. This release features crucial fixes for:
An update for perl is now available for Red Hat Enterprise Linux 7.6 Extended Update Support

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: 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.

Topics%20covered

Topics Covered

security advisory moderate security issue update red hat DoS perl

References

https://access.redhat.com/security/cve/CVE-2020-10543 https://access.redhat.com/security/cve/CVE-2020-10878 https://access.redhat.com/security/cve/CVE-2020-12723 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux ComputeNode EUS (v. 7.6):
Source: perl-5.16.3-294.el7_6.1.src.rpm
noarch: perl-CPAN-1.9800-294.el7_6.1.noarch.rpm perl-ExtUtils-CBuilder-0.28.2.6-294.el7_6.1.noarch.rpm perl-ExtUtils-Embed-1.30-294.el7_6.1.noarch.rpm perl-ExtUtils-Install-1.58-294.el7_6.1.noarch.rpm perl-IO-Zlib-1.10-294.el7_6.1.noarch.rpm perl-Locale-Maketext-Simple-0.21-294.el7_6.1.noarch.rpm perl-Module-CoreList-2.76.02-294.el7_6.1.noarch.rpm perl-Module-Loaded-0.08-294.el7_6.1.noarch.rpm perl-Object-Accessor-0.42-294.el7_6.1.noarch.rpm perl-Package-Constants-0.02-294.el7_6.1.noarch.rpm perl-Pod-Escapes-1.04-294.el7_6.1.noarch.rpm
x86_64: perl-5.16.3-294.el7_6.1.x86_64.rpm perl-Time-Piece-1.20.1-294.el7_6.1.x86_64.rpm perl-core-5.16.3-294.el7_6.1.x86_64.rpm perl-debuginfo-5.16.3-294.el7_6.1.i686.rpm perl-debuginfo-5.16.3-294.el7_6.1.x86_64.rpm perl-devel-5.16.3-294.el7_6.1.i686.rpm perl-devel-5.16.3-294.el7_6.1.x86_64.rpm perl-libs-5.16.3-294.el7_6.1.i686.rpm perl-libs-5.16.3-294.el7_6.1.x86_64.rpm perl-macros-5.16.3-294.el7_6.1.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6):
x86_64: perl-debuginfo-5.16.3-294.el7_6.1.x86_64.rpm perl-tests-5.16.3-294.el7_6.1.x86_64.rpm
Red Hat Enterprise Linux Server EUS (v. 7.6):
Source: perl-5.16.3-294.el7_6.1.src.rpm
noarch:

Read the Full Advisory


Advisory ID: RHSA-2021:0883-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0883
Issue date: 2021-03-16

Topic

An update for perl is now available for Red Hat Enterprise Linux 7.6Extended Update Support.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 perl

Relevant Releases Architectures

Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) - x86_64

Red Hat Enterprise Linux Server EUS (v. 7.6) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional EUS (v. 7.6) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, noarch, ppc64le, s390x

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, ppc64le, s390x

Bugs Fixed

1837975 - CVE-2020-10543 perl: heap-based buffer overflow in regular expression compiler leads to DoS

1837988 - CVE-2020-10878 perl: corruption of intermediate language state of compiled regular expression due to integer overflow leads to DoS

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

1933589 - perl FTBFS: ../cpan/Time-Local/t/Local.t test fails in year 2020 [rhel-7.6.z]

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