CVE-2017-11409 : Exploit Details and Defense Strategies

Wireshark versions 2.0.0 to 2.0.13 were affected by a flaw in the GPRS LLC dissector, causing it to enter an extensive loop. The issue was resolved by modifying the integer data type in the packet-gprs-llc.c file.

Understanding CVE-2017-11409

This CVE entry details a vulnerability in Wireshark versions 2.0.0 to 2.0.13 related to the GPRS LLC dissector.

What is CVE-2017-11409?

In Wireshark versions 2.0.0 to 2.0.13, a flaw in the GPRS LLC dissector could lead to it entering a large loop, impacting the software's functionality.

The Impact of CVE-2017-11409

The vulnerability could potentially cause Wireshark to consume excessive resources and may result in denial of service or system instability.

Technical Details of CVE-2017-11409

This section provides technical insights into the vulnerability.

Vulnerability Description

The flaw in the GPRS LLC dissector in Wireshark versions 2.0.0 to 2.0.13 could trigger an extensive loop, affecting the software's performance.

Affected Systems and Versions

Product: Wireshark
Versions: 2.0.0 to 2.0.13

Exploitation Mechanism

The vulnerability could be exploited by crafting specific network packets that trigger the flawed GPRS LLC dissector, causing it to enter the loop.

Mitigation and Prevention

Protecting systems from CVE-2017-11409 requires specific actions to mitigate the risk.

Immediate Steps to Take

Update Wireshark to a non-vulnerable version beyond 2.0.13.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Regularly update Wireshark and other software to the latest versions.
Implement network segmentation to contain potential threats.

Patching and Updates

Apply patches provided by Wireshark to address the vulnerability.