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Red Hat 8.2: RHSA-2021-2792-01 Moderate: Perl DoS Issues and Fixes

red hat
Calendar Grey July 20, 2021
Dist Redhat Esm H88
A significant python upgrade has been rolled out for CentOS 7.8, targeting critical vulnerabilities and performance issues diligently.
An update for perl is now available for Red Hat Enterprise Linux 8.2 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)
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.
Bug Fix(es):
* [perl-net-ping] wrong return value on failing DNS name lookup (BZ#1973177)

Topics%20covered

Topics Covered

security advisory moderate Red Hat bug fix 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/updates/classification#moderate

Package List

Red Hat Enterprise Linux AppStream EUS (v. 8.2):
aarch64: perl-5.26.3-418.el8_2.1.aarch64.rpm perl-Devel-Peek-1.26-418.el8_2.1.aarch64.rpm perl-Devel-Peek-debuginfo-1.26-418.el8_2.1.aarch64.rpm perl-IO-debuginfo-1.38-418.el8_2.1.aarch64.rpm perl-Time-Piece-1.31-418.el8_2.1.aarch64.rpm perl-Time-Piece-debuginfo-1.31-418.el8_2.1.aarch64.rpm perl-debuginfo-5.26.3-418.el8_2.1.aarch64.rpm perl-debugsource-5.26.3-418.el8_2.1.aarch64.rpm perl-devel-5.26.3-418.el8_2.1.aarch64.rpm perl-interpreter-debuginfo-5.26.3-418.el8_2.1.aarch64.rpm perl-libs-debuginfo-5.26.3-418.el8_2.1.aarch64.rpm perl-tests-5.26.3-418.el8_2.1.aarch64.rpm
noarch: perl-Attribute-Handlers-0.99-418.el8_2.1.noarch.rpm perl-Devel-SelfStubber-1.06-418.el8_2.1.noarch.rpm perl-ExtUtils-Embed-1.34-418.el8_2.1.noarch.rpm perl-ExtUtils-Miniperl-1.06-418.el8_2.1.noarch.rpm perl-Locale-Maketext-Simple-0.21-418.el8_2.1.noarch.rpm perl-Memoize-1.03-418.el8_2.1.noarch.rpm perl-Module-Loaded-0.08-418.el8_2.1.noarch.rpm perl-Net-Ping-2.55-418.el8_2.1.noarch.rpm perl-Pod-Html-1.22.02-418.el8_2.1.noarch.rpm perl-SelfLoader-1.23-418.el8_2.1.noarch.rpm perl-Test-1.30-418.el8_2.1.noarch.rpm perl-libnetcfg-5.26.3-418.el8_2.1.noarch.rpm perl-open-1.11-418.el8_2.1.noarch.rpm perl-utils-5.26.3-418.el8_2.1.noarch.rpm
ppc64le:

Read the Full Advisory


Advisory ID: RHSA-2021:2792-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2792
Issue date: 2021-07-20

Topic

An update for perl is now available for Red Hat Enterprise Linux 8.2Extended 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 Red Hat bug fix DoS perl

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream EUS (v. 8.2) - aarch64, noarch, ppc64le, s390x, x86_64

Red Hat Enterprise Linux BaseOS EUS (v. 8.2) - aarch64, noarch, ppc64le, s390x, 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

1973177 - [perl-net-ping] wrong return value on failing DNS name lookup [rhel-8.2.0.z]

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