CVE-2017-6418 : Security Advisory and Response

ClamAV 0.99.2 through libclamav's message.c is vulnerable to a denial of service via a crafted email message.

Understanding CVE-2017-6418

A denial of service vulnerability in ClamAV 0.99.2 through libclamav's message.c allows attackers to exploit the system through a crafted email message.

What is CVE-2017-6418?

This CVE describes an out-of-bounds read vulnerability in ClamAV 0.99.2 that can be triggered by a specially crafted email message.

The Impact of CVE-2017-6418

The vulnerability can lead to a denial of service condition in the affected ClamAV version, potentially disrupting email scanning functionality.

Technical Details of CVE-2017-6418

ClamAV 0.99.2 through libclamav's message.c is susceptible to a denial of service attack due to an out-of-bounds read vulnerability.

Vulnerability Description

A crafted email message can trigger an out-of-bounds read in ClamAV 0.99.2 through libclamav's message.c, leading to a denial of service.

Affected Systems and Versions

Product: ClamAV
Vendor: N/A
Version: 0.99.2

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a specially crafted email message to the ClamAV system, causing it to read out of bounds and crash.

Mitigation and Prevention

To address CVE-2017-6418, consider the following steps:

Immediate Steps to Take

Update ClamAV to a non-vulnerable version.
Implement email filtering to block malicious email messages.

Long-Term Security Practices

Regularly update and patch ClamAV to protect against known vulnerabilities.
Train users on identifying and handling suspicious emails to prevent exploitation.

Patching and Updates

Apply patches provided by ClamAV to fix the vulnerability and enhance system security.