CVE-2023-47100 : What You Need to Know

A flaw was found in Perl before version 5.38.2, where a specific regular expression construct can lead to writing to unallocated space, potentially resulting in a security issue. Here's what you need to know about CVE-2023-47100.

Understanding CVE-2023-47100

This section will dive into the details of the vulnerability and its impact.

What is CVE-2023-47100?

The vulnerability in Perl before 5.38.2, specifically in S_parse_uniprop_string in regcomp.c, allows writing to unallocated space due to mishandling a property name associated with a regular expression construct.

The Impact of CVE-2023-47100

The vulnerability affects Perl versions from 5.30.0, potentially leading to security issues due to unauthorized memory writes.

Technical Details of CVE-2023-47100

Let's explore the technical aspects of this CVE in more detail.

Vulnerability Description

The vulnerability arises from the mishandling of a property name within a particular regular expression construct, allowing unauthorized memory writes.

Affected Systems and Versions

All versions of Perl prior to 5.38.2 are impacted, starting from version 5.30.0.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious regular expression that triggers the mishandling of the property name, leading to potential memory corruption.

Mitigation and Prevention

Discover the steps you can take to mitigate and prevent exploitation of CVE-2023-47100.

Immediate Steps to Take

It is recommended to update Perl to version 5.38.2 or later to address this vulnerability and prevent unauthorized memory writes.

Long-Term Security Practices

Implement secure coding practices and regularly update Perl to the latest version to protect against known vulnerabilities.

Patching and Updates

Stay informed about security updates for Perl and apply patches promptly to ensure the security of your systems.