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Red Hat: RHSA-2021-1266-02 Moderate: Perl Denial of Service Vulnerabilities

red hat
Calendar Grey April 20, 2021
Dist Redhat Esm H88
New security patch released for PostgreSQL on Ubuntu, fixing critical vulnerabilities related to buffer overflows and SQL injection risks.
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 Lin...

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 Red Hat update 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 Server AUS (v. 7.4):
Source: perl-5.16.3-292.el7_4.2.src.rpm
noarch: perl-CPAN-1.9800-292.el7_4.2.noarch.rpm perl-ExtUtils-CBuilder-0.28.2.6-292.el7_4.2.noarch.rpm perl-ExtUtils-Embed-1.30-292.el7_4.2.noarch.rpm perl-ExtUtils-Install-1.58-292.el7_4.2.noarch.rpm perl-IO-Zlib-1.10-292.el7_4.2.noarch.rpm perl-Locale-Maketext-Simple-0.21-292.el7_4.2.noarch.rpm perl-Module-CoreList-2.76.02-292.el7_4.2.noarch.rpm perl-Module-Loaded-0.08-292.el7_4.2.noarch.rpm perl-Object-Accessor-0.42-292.el7_4.2.noarch.rpm perl-Package-Constants-0.02-292.el7_4.2.noarch.rpm perl-Pod-Escapes-1.04-292.el7_4.2.noarch.rpm
x86_64: perl-5.16.3-292.el7_4.2.x86_64.rpm perl-Time-Piece-1.20.1-292.el7_4.2.x86_64.rpm perl-core-5.16.3-292.el7_4.2.x86_64.rpm perl-debuginfo-5.16.3-292.el7_4.2.i686.rpm perl-debuginfo-5.16.3-292.el7_4.2.x86_64.rpm perl-devel-5.16.3-292.el7_4.2.i686.rpm perl-devel-5.16.3-292.el7_4.2.x86_64.rpm perl-libs-5.16.3-292.el7_4.2.i686.rpm perl-libs-5.16.3-292.el7_4.2.x86_64.rpm perl-macros-5.16.3-292.el7_4.2.x86_64.rpm
Red Hat Enterprise Linux Server E4S (v. 7.4):
Source: perl-5.16.3-292.el7_4.2.src.rpm
noarch: perl-CPAN-1.9800-292.el7_4.2.noarch.rpm perl-ExtUtils-CBuilder-0.28.2.6-292.el7_4.2.noarch.rpm perl-ExtUtils-Embed-1.30-292.el7_4.2.noarch.rpm

Read the Full Advisory


Advisory ID: RHSA-2021:1266-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:1266
Issue date: 2021-04-20

Topic

An update for perl is now available for Red Hat Enterprise Linux 7.4Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended UpdateSupport, and Red Hat Enterprise Linux 7.4 Update Services for SAPSolutions.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 Red Hat update DoS perl

Relevant Releases Architectures

Red Hat Enterprise Linux Server AUS (v. 7.4) - noarch, x86_64

Red Hat Enterprise Linux Server E4S (v. 7.4) - noarch, ppc64le, x86_64

Red Hat Enterprise Linux Server Optional AUS (v. 7.4) - x86_64

Red Hat Enterprise Linux Server Optional E4S (v. 7.4) - ppc64le, x86_64

Red Hat Enterprise Linux Server Optional TUS (v. 7.4) - x86_64

Red Hat Enterprise Linux Server TUS (v. 7.4) - noarch, 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

1938673 - perl-5.26.3-416.el8 FTBFS: ../cpan/Time-Local/t/Local.t test fails in year 2020 [rhel-7.4.z]

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