CVE-2020-26575
High
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.
Exploit probability
3.1%
Published
October 6, 2020
Required by
Not available
Last source change
July 8, 2026
02 / AFFECTED SOFTWARE
Affected packages
98 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2020-26575
View original source
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.
05 / REFERENCES
Further evidence
- https://gitlab.com/wireshark/wireshark/-/commit/3ff940652962c099b73ae3233322b8697b0d10ab
- https://gitlab.com/wireshark/wireshark/-/issues/16887
- https://gitlab.com/wireshark/wireshark/-/merge_requests/467
- https://gitlab.com/wireshark/wireshark/-/merge_requests/471
- https://gitlab.com/wireshark/wireshark/-/merge_requests/472
- https://gitlab.com/wireshark/wireshark/-/merge_requests/473
- https://lists.debian.org/debian-lts-announce/2021/02/msg00008.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHZSVK7PO2LTGFQXFHFXY6SOMSQ7UPRS/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V2667E6WKVE56G66BVBVD7LJPIDOJ7K3/
- https://security.gentoo.org/glsa/202011-08
- https://www.oracle.com/security-alerts/cpujan2021.html
- https://www.wireshark.org/security/wnpa-sec-2020-14.html