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Red Hat Enterprise Linux 8 RHSA-2021-1678-01 Moderate perl DoS

red hat
Calendar Grey May 18, 2021
Dist Redhat Esm H88
A significant security patch for Perl in Red Hat Enterprise Linux 8 mitigates Denial of Service vulnerabilities and introduces essential bug corrections.
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: 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.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory bug fix DoS Red Hat Enterprise Linux moderate severity perl DoS risk perl security

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 https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_release_notes/

Package List

Red Hat Enterprise Linux AppStream (v. 8):
aarch64: perl-5.26.3-419.el8.aarch64.rpm perl-Devel-Peek-1.26-419.el8.aarch64.rpm perl-Devel-Peek-debuginfo-1.26-419.el8.aarch64.rpm perl-IO-debuginfo-1.38-419.el8.aarch64.rpm perl-Time-Piece-1.31-419.el8.aarch64.rpm perl-Time-Piece-debuginfo-1.31-419.el8.aarch64.rpm perl-debuginfo-5.26.3-419.el8.aarch64.rpm perl-debugsource-5.26.3-419.el8.aarch64.rpm perl-devel-5.26.3-419.el8.aarch64.rpm perl-interpreter-debuginfo-5.26.3-419.el8.aarch64.rpm perl-libs-debuginfo-5.26.3-419.el8.aarch64.rpm perl-tests-5.26.3-419.el8.aarch64.rpm
noarch: perl-Attribute-Handlers-0.99-419.el8.noarch.rpm perl-Devel-SelfStubber-1.06-419.el8.noarch.rpm perl-ExtUtils-Embed-1.34-419.el8.noarch.rpm perl-ExtUtils-Miniperl-1.06-419.el8.noarch.rpm perl-Locale-Maketext-Simple-0.21-419.el8.noarch.rpm perl-Memoize-1.03-419.el8.noarch.rpm perl-Module-Loaded-0.08-419.el8.noarch.rpm perl-Net-Ping-2.55-419.el8.noarch.rpm perl-Pod-Html-1.22.02-419.el8.noarch.rpm perl-SelfLoader-1.23-419.el8.noarch.rpm perl-Test-1.30-419.el8.noarch.rpm perl-libnetcfg-5.26.3-419.el8.noarch.rpm perl-open-1.11-419.el8.noarch.rpm perl-utils-5.26.3-419.el8.noarch.rpm
ppc64le: perl-5.26.3-419.el8.ppc64le.rpm perl-Devel-Peek-1.26-419.el8.ppc64le.rpm

Read the Full Advisory


Advisory ID: RHSA-2021:1678-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:1678
Issue date: 2021-05-18

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 bug fix DoS Red Hat Enterprise Linux moderate severity perl DoS risk perl security

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

1807120 - perl-5.26.3-416.el8 FTBFS: ../cpan/Time-Local/t/Local.t test fails in year 2020

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

1903503 - perl-libs: Missing dependency on perl-Encode

1913693 - Not strict restrictive permissions in the doc folders: perl-devel

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