Multiple serious vulnerabilities were found in Wireshark. Malicious users can exploit these vulnerabilities to cause denial of service. Below is a complete list of vulnerabilities:

1. An unspecified vulnerability in the MS-WSP dissector can be exploited remotely via malformed packet trace file to cause denial of service;
2. An unspecified vulnerability in the Steam IHS Discovery dissector can be exploited remotely via malformed packet trace file to cause denial of service;
3. An unspecified vulnerability in the CoAP dissector can be exploited remotely via malformed packet trace file to cause denial of service;
4. An unspecified vulnerability in the OpcUa dissector can be exploited remotely via malformed packet trace file to cause denial of service;

Wireshark 2.6.x earlier than 2.6.4
Wireshark 2.4.x earlier than 2.4.10

Update to the latest version
Get Wireshark

wnpa-sec-2018-47
wnpa-sec-2018-48
wnpa-sec-2018-49
wnpa-sec-2018-50