CVE-2020-26575 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

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://security.gentoo.org/glsa/202011-08 https://www.wireshark.org/security/wnpa-sec-2020-14.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5