CVE-2020-26575
HIGH severity · CVSS 7.5 · CWE-835
7.5CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)3%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://gitlab.com/wireshark/wireshark/-/commit/3ff940652962c099b73ae3233322b8697b0d10ab ↗
Additional information
- NVD record
- https://gitlab.com/wireshark/wireshark/-/commit/3ff940652962c099b73ae3233322b8697b0d10abPatch
- https://gitlab.com/wireshark/wireshark/-/merge_requests/467Patch
- https://gitlab.com/wireshark/wireshark/-/merge_requests/471Patch
- https://gitlab.com/wireshark/wireshark/-/merge_requests/472Patch
- https://gitlab.com/wireshark/wireshark/-/merge_requests/473Patch
- https://gitlab.com/wireshark/wireshark/-/issues/16887
- https://lists.debian.org/debian-lts-announce/2021/02/msg00008.htmlAdvisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHZSVK7PO2LTGFQXFHFXY6SOMSQ7UPRS/