CVE-2018-1000085 : What You Need to Know

A vulnerability has been found in version 0.99.3 of ClamAV that involves an out-of-bounds heap memory read in the XAR parser's xar_hash_check() function. This issue has been fixed in commit d96a6b8bcc7439fa7e3876207aa0a8e79c8451b6.

Understanding CVE-2018-1000085

This CVE entry highlights a critical vulnerability in ClamAV version 0.99.3 that could potentially lead to memory leakage and aid in the development of exploit chains.

What is CVE-2018-1000085?

The vulnerability exists in the XAR parser's xar_hash_check() function
Involves an out-of-bounds heap memory read
Requires the victim to scan a specifically crafted XAR file

The Impact of CVE-2018-1000085

The vulnerability could lead to memory leakage and assist in the creation of exploit chains, posing a significant security risk to systems running the affected ClamAV version.

Technical Details of CVE-2018-1000085

This section provides detailed technical information about the vulnerability.

Vulnerability Description

Out-of-bounds heap memory read in the XAR parser's xar_hash_check() function
Potential memory leakage and exploit chain development

Affected Systems and Versions

Product: ClamAV
Version: 0.99.3

Exploitation Mechanism

Exploitable by scanning a crafted XAR file

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.

Immediate Steps to Take

Update ClamAV to a version where the issue has been fixed
Avoid scanning untrusted XAR files

Long-Term Security Practices

Regularly update software and security patches
Implement network segmentation and access controls

Patching and Updates

Apply the necessary patches provided by ClamAV to address the vulnerability