What’s Vulnerable › Vulnerabilities

CVE-2018-7421

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-02-23 · updated 2026-06-17
• Weakness: CWE-835

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.

Affected products

• Wireshark Foundation Wireshark: from 2.2.0 through 2.2.12; from 2.4.0 through 2.4.4

References

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

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