CVE-2018-9256: Input Validation
First published: Wed Apr 04 2018(Updated: )
In Wireshark 2.4.0 to 2.4.5 and 2.2.0 to 2.2.13, the LWAPP dissector could crash. This was addressed in epan/dissectors/packet-lwapp.c by limiting the encapsulation levels to restrict the recursion depth.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Wireshark Wireshark | >=2.2.0<=2.2.13 | |
| Wireshark Wireshark | >=2.4.0<=2.4.5 | |
| Debian GNU/Linux | =8.0 |
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Reference Links
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14467
- https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=dac48f148538c706c446e5105d84ebcb54587528
- https://lists.debian.org/debian-lts-announce/2019/01/msg00010.html
- https://www.wireshark.org/security/wnpa-sec-2018-20.html
- https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=dac48f148538c706c446e5105d84ebcb54587528
Frequently Asked Questions
What is the severity of CVE-2018-9256?
CVE-2018-9256 has a medium severity rating as it can cause Wireshark to crash due to a recursion depth issue in the LWAPP dissector.
How do I fix CVE-2018-9256?
To remediate CVE-2018-9256, update Wireshark to version 2.4.6 or later, or to version 2.2.14 or later.
What versions of Wireshark are affected by CVE-2018-9256?
Wireshark versions from 2.4.0 to 2.4.5 and from 2.2.0 to 2.2.13 are vulnerable to CVE-2018-9256.
What causes the crash in CVE-2018-9256?
The crash in CVE-2018-9256 is caused by an excessive recursion depth in the LWAPP dissector.
Is CVE-2018-9256 applicable to Debian users?
Yes, Debian users running the affected versions of Wireshark are at risk due to CVE-2018-9256.
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/remedy
- agent/weakness
- agent/author
- agent/severity
- agent/references
- agent/description
- agent/first-publish-date
- agent/event
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/wireshark
- canonical/wireshark wireshark
- version/wireshark wireshark/2.2.0
- version/wireshark wireshark/2.2.13
- version/wireshark wireshark/2.4.0
- version/wireshark wireshark/2.4.5
- vendor/debian
- canonical/debian gnu/linux
- version/debian gnu/linux/8.0