CVE-2021-4183
MEDIUMCVSS 5.5/10EPSS 1.43%
Last modified
CVE-2021-4183 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Crash in the pcapng file parser in Wireshark 3.6.0 allows denial of service via crafted capture file. EPSS estimates a 1.43% chance of exploitation in the next 30 days.
Description
Crash in the pcapng file parser in Wireshark 3.6.0 allows denial of service via crafted capture file
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Wireshark | Wireshark | 3.6.0 |
| Fedoraproject | Fedora | 34 |
| Fedoraproject | Fedora | 35 |
| Oracle | Http Server | 12.2.1.3.0 |
| Oracle | Http Server | 12.2.1.4.0 |
| Oracle | Zfs Storage Appliance Kit | 8.8 |
References
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4183.jsonThird Party Advisory
- https://gitlab.com/wireshark/wireshark/-/issues/17755Exploit, Issue Tracking, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/202210-04Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
- https://www.wireshark.org/security/wnpa-sec-2021-19.htmlVendor Advisory
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4183.jsonThird Party Advisory
- https://gitlab.com/wireshark/wireshark/-/issues/17755Exploit, Issue Tracking, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/202210-04Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
- https://www.wireshark.org/security/wnpa-sec-2021-19.htmlVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-4183?
Crash in the pcapng file parser in Wireshark 3.6.0 allows denial of service via crafted capture file
How severe is CVE-2021-4183?
CVE-2021-4183 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 1.43% probability of exploitation in the next 30 days.
How do I fix CVE-2021-4183?
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-2021-4183?
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Scan your code nowSource: NVD / NIST