CVE-2017-15189 : Exploit Details and Defense Strategies

Wireshark 2.4.0 to 2.4.1 had a vulnerability in the DOCSIS dissector causing an infinite loop, which was fixed by adding decrements in the code.

Understanding CVE-2017-15189

This CVE addresses a specific issue in Wireshark versions 2.4.0 to 2.4.1 related to the DOCSIS dissector.

What is CVE-2017-15189?

In Wireshark versions 2.4.0 to 2.4.1, the DOCSIS dissector could enter an infinite loop due to a coding flaw.

The Impact of CVE-2017-15189

The vulnerability could lead to the Wireshark DOCSIS dissector getting stuck in an endless loop, potentially causing denial of service or other operational issues.

Technical Details of CVE-2017-15189

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The issue in Wireshark versions 2.4.0 to 2.4.1 allowed the DOCSIS dissector to enter an infinite loop, impacting the tool's functionality.

Affected Systems and Versions

Wireshark versions 2.4.0 to 2.4.1

Exploitation Mechanism

The vulnerability could be exploited by crafting a malicious DOCSIS packet to trigger the infinite loop in the dissector.

Mitigation and Prevention

Protecting systems from CVE-2017-15189 requires specific actions to mitigate the risk.

Immediate Steps to Take

Update Wireshark to versions beyond 2.4.1 to eliminate the vulnerability.
Monitor network traffic for any signs of exploitation related to the DOCSIS protocol.

Long-Term Security Practices

Regularly update Wireshark and other network monitoring tools to patch vulnerabilities promptly.
Conduct security audits to identify and address potential flaws in protocol dissectors.

Patching and Updates

Ensure timely application of patches and updates provided by Wireshark to address known vulnerabilities.