CVE-2018-7420
UnknownEPSS 2.84%
Last modified
CVE-2018-7420 is a vulnerability of currently unknown severity. In Wireshark 2.2.0 to 2.2.12 and 2.4.0 to 2.4.4, the pcapng file parser could crash. This was addressed in wiretap/pcapng.c by adding a block-size check for sysdig event blocks.. EPSS estimates a 2.84% chance of exploitation in the next 30 days.
Description
In Wireshark 2.2.0 to 2.2.12 and 2.4.0 to 2.4.4, the pcapng file parser could crash. This was addressed in wiretap/pcapng.c by adding a block-size check for sysdig event blocks.
Metrics
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Wireshark | Wireshark | >= 2.2.0, <= 2.2.12 |
| Wireshark | Wireshark | >= 2.4.0, <= 2.4.4 |
| Debian | Debian Linux | 7.0 |
| Debian | Debian Linux | 8.0 |
References
- http://www.securityfocus.com/bid/103163Third Party Advisory, VDB Entry
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14403Issue Tracking, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/04/msg00018.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/01/msg00010.htmlMailing List, Third Party Advisory
- https://www.wireshark.org/security/wnpa-sec-2018-11.htmlVendor Advisory
- http://www.securityfocus.com/bid/103163Third Party Advisory, VDB Entry
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14403Issue Tracking, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/04/msg00018.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/01/msg00010.htmlMailing List, Third Party Advisory
- https://www.wireshark.org/security/wnpa-sec-2018-11.htmlVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-7420?
In Wireshark 2.2.0 to 2.2.12 and 2.4.0 to 2.4.4, the pcapng file parser could crash. This was addressed in wiretap/pcapng.c by adding a block-size check for sysdig event blocks.
How severe is CVE-2018-7420?
Severity scoring for CVE-2018-7420 is pending analysis. The EPSS model estimates a 2.84% probability of exploitation in the next 30 days.
How do I fix CVE-2018-7420?
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-2018-7420?
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