CVE-2021-42612 : Vulnerability Insights and Analysis

Halibut 1.2 contains a use after free vulnerability in cleanup_index in index.c, allowing an attacker to trigger a segmentation fault or potentially achieve other unspecified impacts via a maliciously crafted text document.

Understanding CVE-2021-42612

This CVE entry describes a specific vulnerability in the Halibut 1.2 software.

What is CVE-2021-42612?

CVE-2021-42612 is a use after free vulnerability present in the cleanup_index function within the index.c file of Halibut version 1.2. Attackers can exploit this issue by manipulating a specially crafted text document, leading to a segmentation fault or potentially other adverse effects.

The Impact of CVE-2021-42612

The vulnerability in Halibut 1.2 could result in a segmentation fault, which might allow attackers to execute arbitrary code or disrupt the normal operation of the application. The full extent of potential impacts remains unspecified.

Technical Details of CVE-2021-42612

This section provides detailed technical information about the CVE.

Vulnerability Description

The use after free vulnerability in cleanup_index within index.c in Halibut 1.2 can be exploited by malicious actors through a specifically crafted text document, enabling them to trigger a segmentation fault or potentially achieve other adverse consequences.

Affected Systems and Versions

Affected Systems: Not applicable
Affected Versions: Halibut 1.2 is confirmed to be vulnerable

Exploitation Mechanism

The vulnerability can be exploited by creating a malicious document and manipulating the cleanup_index function in the index.c file, leading to a use after free condition and subsequent segmentation fault.

Mitigation and Prevention

In this section, we outline steps to mitigate and prevent exploitation of CVE-2021-42612.

Immediate Steps to Take

Apply security patches or updates provided by the software vendor
Consider restricting access to potentially vulnerable systems
Utilize intrusion detection systems to monitor for possible exploitation

Long-Term Security Practices

Conduct regular security audits and code reviews to identify vulnerabilities
Educate developers on secure coding practices to prevent similar issues
Stay informed about security advisories and updates related to the software

Patching and Updates

Ensure that Halibut 1.2 is updated with the latest patches from the vendor to address the use after free vulnerability and prevent potential exploitation.