Cross-site Scripting (XSS) Affecting matrix-synapse package, versions <1.27.0-1
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Test your applications- Snyk ID SNYK-DEBIANUNSTABLE-MATRIXSYNAPSE-1089411
- published 27 Mar 2021
- disclosed 26 Mar 2021
Introduced: 26 Mar 2021
CVE-2021-21332 Open this link in a new tabHow to fix?
Upgrade Debian:unstable matrix-synapse to version 1.27.0-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream matrix-synapse package and not the matrix-synapse package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2021-21332
- https://github.com/matrix-org/synapse/security/advisories/GHSA-246w-56m2-5899
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TNNAJOZNMVMXM6AS7RFFKB4QLUJ4IFEY/
- https://github.com/matrix-org/synapse/commit/e54746bdf7d5c831eabe4dcea76a7626f1de73df
- https://github.com/matrix-org/synapse/pull/9200
- https://github.com/matrix-org/synapse/releases/tag/v1.27.0
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNNAJOZNMVMXM6AS7RFFKB4QLUJ4IFEY/