CVE-2018-7421
First published: Fri Feb 23 2018(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Wireshark Wireshark | >=2.2.0<=2.2.12 | |
| Wireshark Wireshark | >=2.4.0<=2.4.4 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14408
- https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=656812ee1f2a8ddfd383b02a066e888f5919e17a
- https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=e8be5adae469ba563acfad2c2b98673e1afaf901
- https://www.wireshark.org/security/wnpa-sec-2018-06.html
- 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
Frequently Asked Questions
What is the severity of CVE-2018-7421?
CVE-2018-7421 has been classified as a medium severity vulnerability due to the potential for an infinite loop in Wireshark.
How do I fix CVE-2018-7421?
To fix CVE-2018-7421, upgrade to Wireshark version 2.2.13 or 2.4.5 or later.
What components of Wireshark are affected by CVE-2018-7421?
CVE-2018-7421 affects the DMP dissector in Wireshark versions 2.2.0 to 2.2.12 and 2.4.0 to 2.4.4.
Is CVE-2018-7421 a critical vulnerability in Wireshark?
CVE-2018-7421 is not classified as critical, but it poses a risk due to potential performance impacts.
What does the DMP dissector do in relation to CVE-2018-7421?
The DMP dissector in Wireshark is responsible for parsing DMP protocol data, and the vulnerability could lead to excessive resource consumption.
- collector/nvd-index
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/severity
- agent/author
- agent/weakness
- agent/last-modified-date
- agent/tags
- agent/event
- agent/description
- agent/first-publish-date
- agent/source
- vendor/wireshark
- canonical/wireshark wireshark
- version/wireshark wireshark/2.2.0
- version/wireshark wireshark/2.2.12
- version/wireshark wireshark/2.4.0
- version/wireshark wireshark/2.4.4