CVE-2017-7745 : What You Need to Know

Wireshark versions 2.2.0 to 2.2.5 and 2.0.0 to 2.0.11 had a vulnerability in the SIGCOMP dissector that could lead to an endless loop. The issue has been resolved by adjusting memory-size verification.

Understanding CVE-2017-7745

This CVE entry addresses a vulnerability in Wireshark versions 2.2.0 to 2.2.5 and 2.0.0 to 2.0.11 related to the SIGCOMP dissector.

What is CVE-2017-7745?

The vulnerability in Wireshark versions 2.2.0 to 2.2.5 and 2.0.0 to 2.0.11 allowed the SIGCOMP dissector to enter an infinite loop due to packet injection or malformed capture files.

The Impact of CVE-2017-7745

The vulnerability could be exploited to cause a denial of service by triggering an endless loop in the SIGCOMP dissector.

Technical Details of CVE-2017-7745

Wireshark versions 2.2.0 to 2.2.5 and 2.0.0 to 2.0.11 were affected by this vulnerability.

Vulnerability Description

The issue was located in the SIGCOMP dissector, leading to an infinite loop due to packet injection or malformed capture files.

Affected Systems and Versions

Wireshark versions 2.2.0 to 2.2.5
Wireshark versions 2.0.0 to 2.0.11

Exploitation Mechanism

Exploitation involved triggering an endless loop in the SIGCOMP dissector through packet injection or invalid capture files.

Mitigation and Prevention

To address CVE-2017-7745, follow these steps:

Immediate Steps to Take

Update Wireshark to the latest patched version.
Avoid opening suspicious or untrusted capture files.

Long-Term Security Practices

Regularly update Wireshark and other software to patch vulnerabilities.
Implement network monitoring to detect unusual traffic patterns.

Patching and Updates

Ensure Wireshark is regularly updated to the latest version to mitigate known vulnerabilities.