CVE-2020-26575
HIGHCVSS 7.5/10EPSS 3.08%
Last modified
CVE-2020-26575 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In Wireshark through 3.2.7, the Facebook Zero Protocol (aka FBZERO) dissector could enter an infinite loop. This was addressed in epan/dissectors/packet-fbzero.c by correcting the implementation of offset advancement.. EPSS estimates a 3.08% chance of exploitation in the next 30 days.
Description
In Wireshark through 3.2.7, the Facebook Zero Protocol (aka FBZERO) dissector could enter an infinite loop. This was addressed in epan/dissectors/packet-fbzero.c by correcting the implementation of offset advancement.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Wireshark | Wireshark | <= 3.2.7 |
| Fedoraproject | Fedora | 32 |
| Fedoraproject | Fedora | 33 |
| Debian | Debian Linux | 9.0 |
| Oracle | Zfs Storage Appliance Firmware | 8.8 |
References
- https://gitlab.com/wireshark/wireshark/-/commit/3ff940652962c099b73ae3233322b8697b0d10abPatch, Third Party Advisory
- https://gitlab.com/wireshark/wireshark/-/merge_requests/467Patch, Third Party Advisory
- https://gitlab.com/wireshark/wireshark/-/merge_requests/471Patch, Third Party Advisory
- https://gitlab.com/wireshark/wireshark/-/merge_requests/472Patch, Third Party Advisory
- https://gitlab.com/wireshark/wireshark/-/merge_requests/473Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00008.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202011-08Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2021.htmlThird Party Advisory
- https://www.wireshark.org/security/wnpa-sec-2020-14.htmlVendor Advisory
- https://gitlab.com/wireshark/wireshark/-/commit/3ff940652962c099b73ae3233322b8697b0d10abPatch, Third Party Advisory
- https://gitlab.com/wireshark/wireshark/-/merge_requests/467Patch, Third Party Advisory
- https://gitlab.com/wireshark/wireshark/-/merge_requests/471Patch, Third Party Advisory
- https://gitlab.com/wireshark/wireshark/-/merge_requests/472Patch, Third Party Advisory
- https://gitlab.com/wireshark/wireshark/-/merge_requests/473Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00008.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202011-08Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2021.htmlThird Party Advisory
- https://www.wireshark.org/security/wnpa-sec-2020-14.htmlVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-26575?
In Wireshark through 3.2.7, the Facebook Zero Protocol (aka FBZERO) dissector could enter an infinite loop. This was addressed in epan/dissectors/packet-fbzero.c by correcting the implementation of offset advancement.
How severe is CVE-2020-26575?
CVE-2020-26575 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.08% probability of exploitation in the next 30 days.
How do I fix CVE-2020-26575?
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-2020-26575?
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Scan your code nowSource: NVD / NIST