CVE-2023-47038

Perl: write past buffer end via illegal user-defined unicode property

Description

A vulnerability was found in perl 5.30.0 through 5.38.0. This issue occurs when a crafted regular expression is compiled by perl, which can allow an attacker controlled byte buffer overflow in a heap allocated buffer.

Remediation

Workaround:

  • Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Categories

7.0
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.15%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory perl.org
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 6
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 8
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2024:2228 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2024:3128 third party advisory vendor advisory
https://access.redhat.com/security/cve/CVE-2023-47038 broken link third party advisory vdb entry
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1056746 patch mailing list
https://bugzilla.redhat.com/show_bug.cgi?id=2249523 third party advisory issue tracking
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GNEEWAACXQCEEAKSG7XX2D5YDRWLCIZJ/ third party advisory
https://perldoc.perl.org/perl5382delta#CVE-2023-47038-Write-past-buffer-end-via-illegal-user-defined-Unicode-property vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-47038?
CVE-2023-47038 has been scored as a high severity vulnerability.
How to fix CVE-2023-47038?
As a workaround for remediating CVE-2023-47038: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Is CVE-2023-47038 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-47038 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-47038?
CVE-2023-47038 affects Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 6, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 8.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.