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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-21332 Detail

Description

Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.27.0, the password reset endpoint served via Synapse was 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. This is fixed in version 1.27.0.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 3.x Severity and Vector Strings:

NIST CVSS score
NIST: NVD
Base Score:  8.2 HIGH
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Nist CVSS score does not match with CNA score
CNA:  GitHub, Inc.
Base Score:  6.9 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/matrix-org/synapse/commit/e54746bdf7d5c831eabe4dcea76a7626f1de73df Patch  Third Party Advisory 
https://github.com/matrix-org/synapse/commit/e54746bdf7d5c831eabe4dcea76a7626f1de73df Patch  Third Party Advisory 
https://github.com/matrix-org/synapse/pull/9200 Patch  Third Party Advisory 
https://github.com/matrix-org/synapse/pull/9200 Patch  Third Party Advisory 
https://github.com/matrix-org/synapse/releases/tag/v1.27.0 Third Party Advisory 
https://github.com/matrix-org/synapse/releases/tag/v1.27.0 Third Party Advisory 
https://github.com/matrix-org/synapse/security/advisories/GHSA-246w-56m2-5899 Third Party Advisory 
https://github.com/matrix-org/synapse/security/advisories/GHSA-246w-56m2-5899 Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNNAJOZNMVMXM6AS7RFFKB4QLUJ4IFEY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNNAJOZNMVMXM6AS7RFFKB4QLUJ4IFEY/

Weakness Enumeration

CWE-ID CWE Name Source
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') cwe source acceptance level NIST   GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		Up to (excluding)
1.27.0

Configuration 2 ( hide )
 cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
   Show Matching CPE(s)

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-21332
NVD Published Date:
03/26/2021
NVD Last Modified:
11/21/2024
Source:
GitHub, Inc.