FreeBSD : py-matrix-synapse -- DoS on Federation API (cfa0be42-3cd7-11eb-9de7-641c67a117d8)

medium Nessus Plugin ID 144167

Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

Matrix developers reports :

A malicious or poorly-implemented homeserver can inject malformed events into a room by specifying a different room id in the path of a /send_join, /send_leave, /invite or /exchange_third_party_invite request. This can lead to a denial of service in which future events will not be correctly sent to other servers over federation. This affects any server which accepts federation requests from untrusted servers.

Solution

Update the affected packages.

Plugin Details

Severity: Medium

ID: 144167

File Name: freebsd_pkg_cfa0be423cd711eb9de7641c67a117d8.nasl

Version: 1.3

Type: local

Family: FreeBSD Local Security Checks

Published: 12/14/2020

Updated: 2/2/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P

CVSS Score Source: CVE-2020-26257

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:py36-matrix-synapse, p-cpe:/a:freebsd:freebsd:py37-matrix-synapse, p-cpe:/a:freebsd:freebsd:py38-matrix-synapse, p-cpe:/a:freebsd:freebsd:py39-matrix-synapse, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 12/13/2020

Vulnerability Publication Date: 12/9/2020

Reference Information

CVE: CVE-2020-26257

Detections

Analytics