CVE-2018-14340
UnknownEPSS 3.45%
Last modified
CVE-2018-14340 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 3.45% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| 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 | Debian Linux | 8.0 |
References
- http://www.securityfocus.com/bid/104847Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041608Third Party Advisory, VDB Entry
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14675Exploit, Issue Tracking, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/07/msg00045.htmlMailing List, Third Party Advisory
- https://www.wireshark.org/security/wnpa-sec-2018-36.htmlVendor Advisory
- http://www.securityfocus.com/bid/104847Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041608Third Party Advisory, VDB Entry
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14675Exploit, Issue Tracking, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/07/msg00045.htmlMailing List, Third Party Advisory
- https://www.wireshark.org/security/wnpa-sec-2018-36.htmlVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-14340?
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.
How severe is CVE-2018-14340?
Severity scoring for CVE-2018-14340 is pending analysis. The EPSS model estimates a 3.45% probability of exploitation in the next 30 days.
How do I fix CVE-2018-14340?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2018-14340?
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Scan your code nowSource: NVD / NIST