CVE-2019-9214 : Exploit Details and Defense Strategies
Learn about CVE-2019-9214 affecting Wireshark versions 2.4.0 to 2.4.12 and 2.6.0 to 2.6.6. Find out how to mitigate the RPCAP dissector vulnerability and prevent crashes.
Wireshark versions 2.4.0 to 2.4.12 and 2.6.0 to 2.6.6 were affected by a vulnerability in the RPCAP dissector that could lead to crashes. The issue has been resolved by preventing attempts to access a NULL conversation.
Understanding CVE-2019-9214
This CVE entry addresses a vulnerability in Wireshark versions 2.4.0 to 2.4.12 and 2.6.0 to 2.6.6 related to the RPCAP dissector.
What is CVE-2019-9214?
In Wireshark versions 2.4.0 to 2.4.12 and 2.6.0 to 2.6.6, a vulnerability in the RPCAP dissector could cause crashes. The issue was mitigated by modifying the packet-rpcap.c file to prevent NULL conversation access.
The Impact of CVE-2019-9214
The vulnerability could lead to crashes in Wireshark versions 2.4.0 to 2.4.12 and 2.6.0 to 2.6.6, potentially affecting the stability and functionality of the network protocol analyzer.
Technical Details of CVE-2019-9214
Wireshark vulnerability details and affected systems.
Vulnerability Description
The RPCAP dissector in Wireshark versions 2.4.0 to 2.4.12 and 2.6.0 to 2.6.6 could crash due to attempted NULL conversation access, which was addressed by code changes.
Affected Systems and Versions
- Wireshark versions 2.4.0 to 2.4.12
- Wireshark versions 2.6.0 to 2.6.6
Exploitation Mechanism
The vulnerability could be exploited by triggering specific network packets that would cause the RPCAP dissector to attempt accessing a NULL conversation, leading to a crash.
Mitigation and Prevention
Steps to mitigate and prevent the CVE-2019-9214 vulnerability.
Immediate Steps to Take
- Update Wireshark to the latest version to apply the necessary security patches.
- Avoid opening suspicious or untrusted network capture files.
Long-Term Security Practices
- Regularly update Wireshark and other software to address known vulnerabilities.
- Implement network segmentation to limit the impact of potential exploits.
Patching and Updates
- Check for and apply security updates provided by Wireshark promptly to address vulnerabilities and enhance network security.