CVE-2018-7418 : Security Advisory and Response

Wireshark 2.2.0 to 2.2.12 and 2.4.0 to 2.4.4 versions were affected by a SIGCOMP dissector crashing issue, which was resolved by correcting the length value extraction.

Understanding CVE-2018-7418

This CVE entry addresses a vulnerability in Wireshark versions 2.2.0 to 2.2.12 and 2.4.0 to 2.4.4 related to the SIGCOMP dissector.

What is CVE-2018-7418?

In Wireshark versions 2.2.0 to 2.2.12 and 2.4.0 to 2.4.4, a vulnerability existed in the SIGCOMP dissector that could lead to a crash.

The Impact of CVE-2018-7418

The vulnerability could result in a denial of service (DoS) situation due to the crashing of the SIGCOMP dissector.

Technical Details of CVE-2018-7418

This section provides more in-depth technical details of the CVE.

Vulnerability Description

The issue was resolved by making necessary changes to the extraction of the length value in epan/dissectors/packet-sigcomp.c.

Affected Systems and Versions

Wireshark versions 2.2.0 to 2.2.12
Wireshark versions 2.4.0 to 2.4.4

Exploitation Mechanism

Exploitation of this vulnerability could lead to a crash of the SIGCOMP dissector, potentially causing a DoS condition.

Mitigation and Prevention

To address CVE-2018-7418, follow these mitigation and prevention strategies:

Immediate Steps to Take

Update Wireshark to versions 2.2.13 or later for the 2.2.x branch, and versions 2.4.5 or later for the 2.4.x branch.
Monitor vendor security advisories for patches and updates.

Long-Term Security Practices

Regularly update Wireshark and other software to the latest versions.
Implement network segmentation to minimize the impact of potential vulnerabilities.

Patching and Updates

Apply patches provided by Wireshark promptly to address the vulnerability and prevent exploitation.