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CVE-2020-25862

Published: 6 October 2020

In Wireshark 3.2.0 to 3.2.6, 3.0.0 to 3.0.13, and 2.6.0 to 2.6.20, the TCP dissector could crash. This was addressed in epan/dissectors/packet-tcp.c by changing the handling of the invalid 0xFFFF checksum.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
wireshark
Launchpad, Ubuntu, Debian
impish Not vulnerable
(3.2.7-1)
focal
Released (3.2.3-1ubuntu0.1~esm1)
Available with Ubuntu Pro
trusty
Released (2.6.10-1~ubuntu14.04.0~esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
xenial
Released (2.6.10-1~ubuntu16.04.0+esm1)
Available with Ubuntu Pro
hirsute Not vulnerable
(3.2.7-1)
groovy Not vulnerable
(3.2.7-1)
jammy Not vulnerable
(3.2.7-1)
kinetic Not vulnerable
(3.2.7-1)
lunar Not vulnerable
(3.2.7-1)
upstream
Released (3.2.7-1)
bionic
Released (2.6.10-1~ubuntu18.04.0+esm1)
Available with Ubuntu Pro
mantic Not vulnerable
(3.2.7-1)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H