Vulnerability identifier: #VU11467

Vulnerability risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-7421

CWE-ID: CWE-835

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Wireshark
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Wireshark.org

Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in epan/dissectors/packet-dmp.c due to incorrect supporting of a bounded number of Security Categories for a DMP Security Classification. A remote attacker can trigger an infinite loop in the DMP dissector and cause the service to crash.

Mitigation
Update to version 2.2.13 or 2.4.5.

Vulnerable software versions

Wireshark: 2.2.0 - 2.2.12, 2.4.0 - 2.4.4

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External links
http://www.wireshark.org/security/wnpa-sec-2018-06.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.