Vulnerability Monitor

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CVE-2021-21332

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.

Published

2021-03-26T20:15:11.843

Last Modified

2024-11-21T05:48:02.440

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.9 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-79
Type: Primary
CWE-79

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	matrix	synapse	< 1.27.0	Yes
Operating System	fedoraproject	fedora	34	Yes

References

https://github.com/matrix-org/synapse/commit/e54746bdf7d5c831eabe4dcea76a7626f1de73df Patch, Third Party Advisory ([email protected])
https://github.com/matrix-org/synapse/pull/9200 Patch, Third Party Advisory ([email protected])
https://github.com/matrix-org/synapse/releases/tag/v1.27.0 Third Party Advisory ([email protected])
https://github.com/matrix-org/synapse/security/advisories/GHSA-246w-56m2-5899 Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNNAJOZNMVMXM6AS7RFFKB4QLUJ4IFEY/ ([email protected])
https://github.com/matrix-org/synapse/commit/e54746bdf7d5c831eabe4dcea76a7626f1de73df Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/matrix-org/synapse/pull/9200 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/matrix-org/synapse/releases/tag/v1.27.0 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/matrix-org/synapse/security/advisories/GHSA-246w-56m2-5899 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNNAJOZNMVMXM6AS7RFFKB4QLUJ4IFEY/ (af854a3a-2127-422b-91ae-364da2661108)