CVE-2020-11647 : Vulnerability Insights and Analysis

Wireshark versions 3.2.0 to 3.2.2, 3.0.0 to 3.0.9, and 2.6.0 to 2.6.15 are affected by a vulnerability in the BACapp dissector that could lead to a crash. The issue has been resolved by limiting recursion in the packet-bacapp.c file.

Understanding CVE-2020-11647

Wireshark versions 3.2.0 to 3.2.2, 3.0.0 to 3.0.9, and 2.6.0 to 2.6.15 are susceptible to a crash due to a flaw in the BACapp dissector.

What is CVE-2020-11647?

This CVE refers to a vulnerability in Wireshark versions 3.2.0 to 3.2.2, 3.0.0 to 3.0.9, and 2.6.0 to 2.6.15 that could cause the BACapp dissector to crash.

The Impact of CVE-2020-11647

The vulnerability could be exploited to crash the BACapp dissector in affected Wireshark versions, potentially leading to denial of service.

Technical Details of CVE-2020-11647

Wireshark versions 3.2.0 to 3.2.2, 3.0.0 to 3.0.9, and 2.6.0 to 2.6.15 are affected by this vulnerability.

Vulnerability Description

The issue arises from the BACapp dissector in Wireshark, which could crash due to excessive recursion.

Affected Systems and Versions

Wireshark 3.2.0 to 3.2.2
Wireshark 3.0.0 to 3.0.9
Wireshark 2.6.0 to 2.6.15

Exploitation Mechanism

Attackers could exploit this vulnerability by sending specially crafted network packets to trigger excessive recursion in the BACapp dissector, leading to a crash.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2020-11647.

Immediate Steps to Take

Update Wireshark to the latest patched version.
Monitor network traffic for any signs of exploitation.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update Wireshark and other software to patch known vulnerabilities.
Conduct security audits and penetration testing to identify and address weaknesses.
Educate network users on safe browsing habits and security best practices.

Patching and Updates

Ensure that all systems running Wireshark are updated with the latest security patches to mitigate the risk of exploitation.