CVE-2023-47038 : Security Advisory and Response

A vulnerability was found in perl that allows an attacker controlled byte buffer overflow in a heap allocated buffer.

Understanding CVE-2023-47038

This CVE affects the Perl programming language, specifically when a crafted regular expression is compiled, leading to a buffer overflow vulnerability.

What is CVE-2023-47038?

CVE-2023-47038 is a vulnerability in perl that arises from compiling a crafted regular expression, enabling an attacker to trigger a buffer overflow in a heap allocated buffer.

The Impact of CVE-2023-47038

This vulnerability has a base severity rating of 'High' with a CVSS base score of 7 out of 10, indicating a significant impact on confidentiality, integrity, and availability.

Technical Details of CVE-2023-47038

The vulnerability description stems from a crafted regular expression triggering a buffer overflow in a heap allocated buffer.

Vulnerability Description

When perl compiles a specific regular expression, it results in a controlled byte buffer overflow, posing a security risk.

Affected Systems and Versions

Perl version 5.30 and 5.32 are affected on Red Hat Enterprise Linux 8 and Fedora.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious regular expression, triggering the buffer overflow.

Mitigation and Prevention

Due to the severity of the issue, immediate actions and long-term security measures are crucial.

Immediate Steps to Take

Users should apply patches provided by the respective vendors and monitor for any signs of exploitation.

Long-Term Security Practices

Regularly update Perl and related packages, conduct security audits, and educate users on safe coding practices.

Patching and Updates

Refer to the vendor's security advisories for patches and stay informed about security best practices.