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Red Hat RHEL 7 RHSA-2021:0343-01 Moderate: Perl DoS Threats

red hat
Calendar Grey February 2, 2021
Dist Redhat Esm H88
A new security patch for Perl on Red Hat Enterprise Linux 7 is released to tackle significant vulnerabilities affecting system reliability and protection.
An update for perl is now available for Red Hat Enterprise Linux 7

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 update buffer overflow DoS Red Hat Enterprise Linux perl DoS threat perl update security impact moderate

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 Client (v. 7):
Source: perl-5.16.3-299.el7_9.src.rpm
noarch: perl-CPAN-1.9800-299.el7_9.noarch.rpm perl-ExtUtils-CBuilder-0.28.2.6-299.el7_9.noarch.rpm perl-ExtUtils-Embed-1.30-299.el7_9.noarch.rpm perl-ExtUtils-Install-1.58-299.el7_9.noarch.rpm perl-IO-Zlib-1.10-299.el7_9.noarch.rpm perl-Locale-Maketext-Simple-0.21-299.el7_9.noarch.rpm perl-Module-CoreList-2.76.02-299.el7_9.noarch.rpm perl-Module-Loaded-0.08-299.el7_9.noarch.rpm perl-Object-Accessor-0.42-299.el7_9.noarch.rpm perl-Package-Constants-0.02-299.el7_9.noarch.rpm perl-Pod-Escapes-1.04-299.el7_9.noarch.rpm
x86_64: perl-5.16.3-299.el7_9.x86_64.rpm perl-Time-Piece-1.20.1-299.el7_9.x86_64.rpm perl-core-5.16.3-299.el7_9.x86_64.rpm perl-debuginfo-5.16.3-299.el7_9.i686.rpm perl-debuginfo-5.16.3-299.el7_9.x86_64.rpm perl-devel-5.16.3-299.el7_9.i686.rpm perl-devel-5.16.3-299.el7_9.x86_64.rpm perl-libs-5.16.3-299.el7_9.i686.rpm perl-libs-5.16.3-299.el7_9.x86_64.rpm perl-macros-5.16.3-299.el7_9.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: perl-debuginfo-5.16.3-299.el7_9.x86_64.rpm perl-tests-5.16.3-299.el7_9.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: perl-5.16.3-299.el7_9.src.rpm
noarch: perl-CPAN-1.9800-299.el7_9.noarch.rpm

Read the Full Advisory


Advisory ID: RHSA-2021:0343-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0343
Issue date: 2021-02-02

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 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 update buffer overflow DoS Red Hat Enterprise Linux perl DoS threat perl update security impact moderate

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

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

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