CVE-2017-17083 : Security Advisory and Response

Wireshark versions between 2.4.0 and 2.4.2, as well as 2.2.0 to 2.2.10, had a bug in the NetBIOS dissector that could lead to crashes. The issue was addressed by limiting write operations to the buffer's start.

Understanding CVE-2017-17083

This CVE entry pertains to a vulnerability in Wireshark versions that could result in a crash due to a bug in the NetBIOS dissector.

What is CVE-2017-17083?

Wireshark versions 2.4.0 to 2.4.2 and 2.2.0 to 2.2.10 were susceptible to a bug in the NetBIOS dissector, potentially causing crashes.

The Impact of CVE-2017-17083

The vulnerability could lead to crashes in Wireshark, affecting the stability and reliability of the network analysis tool.

Technical Details of CVE-2017-17083

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

Vulnerability Description

The bug in the NetBIOS dissector in Wireshark versions allowed for crashes, which was mitigated by restricting write operations to the buffer's beginning.

Affected Systems and Versions

Wireshark versions 2.4.0 to 2.4.2
Wireshark versions 2.2.0 to 2.2.10

Exploitation Mechanism

The vulnerability could be exploited by sending specially crafted NetBIOS packets to the affected Wireshark versions, triggering a crash.

Mitigation and Prevention

To address CVE-2017-17083, follow these mitigation strategies:

Immediate Steps to Take

Update Wireshark to the latest version to apply the fix.
Avoid opening suspicious or untrusted capture files with Wireshark.

Long-Term Security Practices

Regularly update Wireshark and other network analysis tools to patch vulnerabilities.
Implement network segmentation to limit the impact of potential exploits.

Patching and Updates

Stay informed about security advisories and promptly apply patches released by Wireshark to address vulnerabilities.