Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Wireshark | Wireshark | >= 2.2.0, <= 2.2.15 |
| Debian | Debian Linux | 8.0 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00027.html
- http://www.securityfocus.com/bid/104847Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041608Third Party AdvisoryVDB Entry
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14675ExploitIssue TrackingVendor Advisory
- https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=672d882a
- https://lists.debian.org/debian-lts-announce/2018/07/msg00045.htmlMailing ListThird Party Advisory
- https://www.wireshark.org/security/wnpa-sec-2018-36.htmlVendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00027.html
- http://www.securityfocus.com/bid/104847Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041608Third Party AdvisoryVDB Entry
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14675ExploitIssue TrackingVendor Advisory
- https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=672d882a
- https://lists.debian.org/debian-lts-announce/2018/07/msg00045.htmlMailing ListThird Party Advisory
- https://www.wireshark.org/security/wnpa-sec-2018-36.htmlVendor Advisory
FAQ
What is CVE-2018-14340?
CVE-2018-14340 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 avoi...
How severe is CVE-2018-14340?
CVE-2018-14340 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-14340?
Check the references section above for vendor advisories and patch information. Affected products include: Wireshark Wireshark, Debian Debian Linux.