CVE-2018-7421

Public Exploit

Description

In Wireshark 2.2.0 to 2.2.12 and 2.4.0 to 2.4.4, the DMP dissector could go into an infinite loop. This was addressed in epan/dissectors/packet-dmp.c by correctly supporting a bounded number of Security Categories for a DMP Security Classification.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.43%
Vendor Advisory wireshark.org Vendor Advisory wireshark.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=656812ee1f2a8ddfd383b02a066e888f5919e17a
https://www.wireshark.org/security/wnpa-sec-2018-06.html vendor advisory
https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=e8be5adae469ba563acfad2c2b98673e1afaf901
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14408 issue tracking exploit vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-7421?
CVE-2018-7421 has been scored as a high severity vulnerability.
How to fix CVE-2018-7421?
To fix CVE-2018-7421, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-7421 being actively exploited in the wild?
It is possible that CVE-2018-7421 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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