CVE-2018-14340
First published: Thu Jul 19 2018(Updated: )
In Wireshark 2.6.0 to 2.6.1, 2.4.0 to 2.4.7, and 2.2.0 to 2.2.15, dissectors that support zlib decompression could crash. This was addressed in epan/tvbuff_zlib.c by rejecting negative lengths to avoid a buffer over-read.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Wireshark Wireshark | >=2.2.0<=2.2.15 | |
| Wireshark Wireshark | >=2.4.0<=2.4.7 | |
| Wireshark Wireshark | >=2.6.0<=2.6.1 | |
| Debian GNU/Linux | =8.0 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00027.html
- http://www.securityfocus.com/bid/104847
- http://www.securitytracker.com/id/1041608
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14675
- https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=672d882a53f96730e4ef1e5b1639c585823b0df8
- https://lists.debian.org/debian-lts-announce/2018/07/msg00045.html
- https://www.wireshark.org/security/wnpa-sec-2018-36.html
- https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=672d882a53f96730e4ef1e5b1639c585823b0df8
Frequently Asked Questions
What is the severity of CVE-2018-14340?
CVE-2018-14340 has been rated as a moderate severity vulnerability.
How do I fix CVE-2018-14340?
To fix CVE-2018-14340, upgrade Wireshark to versions 2.6.2, 2.4.8, or 2.2.16 or later.
What versions of Wireshark are affected by CVE-2018-14340?
CVE-2018-14340 affects Wireshark versions 2.6.0 to 2.6.1, 2.4.0 to 2.4.7, and 2.2.0 to 2.2.15.
What type of vulnerability is CVE-2018-14340?
CVE-2018-14340 is a buffer over-read vulnerability related to zlib decompression in Wireshark.
Does CVE-2018-14340 affect Debian Linux?
Yes, CVE-2018-14340 affects Debian Linux 8.0 when using vulnerable versions of Wireshark.
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/weakness
- agent/severity
- agent/remedy
- agent/last-modified-date
- agent/references
- agent/first-publish-date
- agent/event
- agent/description
- 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/2.2.15
- version/wireshark wireshark/2.4.0
- version/wireshark wireshark/2.4.7
- version/wireshark wireshark/2.6.0
- version/wireshark wireshark/2.6.1
- vendor/debian
- canonical/debian gnu/linux
- version/debian gnu/linux/8.0