FreeBSD : py-matrix-synapse -- XSS vulnerability (5f39d80f-107c-11eb-8b47-641c67a117d8)

Medium Nessus Plugin ID 141517

New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.

VPR Score: 3


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


Matrix developers reports :

The fallback authentication endpoint served via Synapse were vulnerable to cross-site scripting (XSS) attacks. The impact depends on the configuration of the domain that Synapse is deployed on, but may allow access to cookies and other browser data, CSRF vulnerabilities, and access to other resources served on the same domain or parent domains.


Update the affected packages.

See Also

Plugin Details

Severity: Medium

ID: 141517

File Name: freebsd_pkg_5f39d80f107c11eb8b47641c67a117d8.nasl

Version: 1.3

Type: local

Published: 2020/10/19

Updated: 2020/10/29

Dependencies: 12634

Risk Information

Risk Factor: Medium

VPR Score: 3

CVSS v2.0

Base Score: 4.3

Temporal Score: 3.2

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 6.1

Temporal Score: 5.3

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

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: 2020/10/17

Vulnerability Publication Date: 2020/10/01

Reference Information

CVE: CVE-2020-26891