CVE-2019-9209 : Exploit Details and Defense Strategies

Wireshark versions 2.4.0 to 2.4.12 and 2.6.0 to 2.6.6 had a vulnerability in the ASN.1 BER and related dissectors leading to potential crashes. The issue has been resolved.

Understanding CVE-2019-9209

This CVE entry pertains to a vulnerability in Wireshark versions 2.4.0 to 2.4.12 and 2.6.0 to 2.6.6 related to ASN.1 BER and associated dissectors.

What is CVE-2019-9209?

Wireshark versions 2.4.0 to 2.4.12 and 2.6.0 to 2.6.6 were susceptible to crashes due to a vulnerability in the ASN.1 BER and related dissectors.

The Impact of CVE-2019-9209

The vulnerability could lead to crashes in affected Wireshark versions, potentially impacting network analysis and security monitoring processes.

Technical Details of CVE-2019-9209

Wireshark versions 2.4.0 to 2.4.12 and 2.6.0 to 2.6.6 were affected by a specific vulnerability.

Vulnerability Description

The vulnerability in the ASN.1 BER and related dissectors could result in crashes due to buffer overflow caused by excessively long time values.

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 crafting network packets with specially designed time values to trigger the buffer overflow and potentially crash the Wireshark application.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2019-9209.

Immediate Steps to Take

Update Wireshark to the latest patched version that addresses the vulnerability.
Avoid opening suspicious or untrusted network capture files.
Monitor vendor advisories and security mailing lists for updates.

Long-Term Security Practices

Regularly update Wireshark and other network analysis tools to stay protected against known vulnerabilities.
Implement network segmentation and access controls to limit the impact of potential attacks.

Patching and Updates

Apply security patches provided by Wireshark promptly to mitigate the vulnerability and enhance network security.