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CVE-2018-12423

Published: 14 June 2018

In Synapse before 0.31.2, unauthorised users can hijack rooms when there is no m.room.power_levels event in force.

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
matrix-synapse
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(0.31.2+dfsg-1)
artful Ignored
(end of life)
bionic
Released (0.24.0+dfsg-1ubuntu0.1~esm1)
Available with Ubuntu Pro
cosmic Not vulnerable
(0.31.2+dfsg-1)
disco Not vulnerable
(0.31.2+dfsg-1)
eoan Not vulnerable
(0.31.2+dfsg-1)
focal Not vulnerable
(0.31.2+dfsg-1)
groovy Not vulnerable
(0.31.2+dfsg-1)
impish Not vulnerable
(0.31.2+dfsg-1)
jammy Not vulnerable
(0.31.2+dfsg-1)
kinetic Not vulnerable
(0.31.2+dfsg-1)
lunar Not vulnerable
(0.31.2+dfsg-1)
trusty Does not exist

upstream
Released (0.31.2+dfsg-1)
xenial Does not exist

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 High
Availability impact None
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N