CVE-2020-7045 : What You Need to Know
Learn about CVE-2020-7045, a Wireshark vulnerability that could lead to a crash in the BT ATT dissector. Find out how to mitigate the risk and prevent exploitation.
In Wireshark 3.0.x before 3.0.8, the BT ATT dissector could crash. This vulnerability was addressed by validating opcodes in epan/dissectors/packet-btatt.c.
Understanding CVE-2020-7045
What is CVE-2020-7045?
CVE-2020-7045 is a vulnerability in Wireshark versions prior to 3.0.8 that could lead to a crash in the BT ATT dissector.
The Impact of CVE-2020-7045
This vulnerability could be exploited by an attacker to cause a denial of service (DoS) by crashing the Wireshark application.
Technical Details of CVE-2020-7045
Vulnerability Description
The vulnerability in Wireshark 3.0.x before 3.0.8 allowed the BT ATT dissector to crash, which was mitigated by validating opcodes in the affected code.
Affected Systems and Versions
- Product: Wireshark
- Version: 3.0.x (before 3.0.8)
Exploitation Mechanism
The vulnerability could be exploited by sending specially crafted network packets to the Wireshark application, triggering a crash.
Mitigation and Prevention
Immediate Steps to Take
- Update Wireshark to version 3.0.8 or later to mitigate the vulnerability.
- Avoid opening suspicious or untrusted network capture files.
Long-Term Security Practices
- Regularly update Wireshark and other software to the latest versions.
- Implement network segmentation to minimize the impact of potential attacks.
Patching and Updates
Ensure that all software, including Wireshark, is promptly patched with the latest security updates to prevent exploitation of known vulnerabilities.