ALT Linux Team

Package matrix-synapse update in sisyphus on 2020-10-16

ALT-PU-2020-3063-2

Package matrix-synapse updated to version 1.21.2-alt1 for branch sisyphus in task 260000.

Closed vulnerabilities

Published: 2020-10-19
Modified: 2024-11-21

CVE-2020-26891

AuthRestServlet in Matrix Synapse before 1.21.0 is vulnerable to XSS due to unsafe interpolation of the session GET parameter. This allows a remote attacker to execute an XSS attack on the domain Synapse is hosted on, by supplying the victim user with a malicious URL to the /_matrix/client/r0/auth/*/fallback/web or /_matrix/client/unstable/auth/*/fallback/web Synapse endpoints.

Severity: MEDIUM (4.3)Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: MEDIUM (6.1)Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References:
Published: 2020-10-16
Modified: 2024-09-24

GHSA-3x8c-fmpc-5rmq

Cross-site scripting (XSS) vulnerability in the fallback authentication endpoint

Severity: MEDIUM (5.1)Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Severity: MEDIUM (5.1)Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
References:
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Version: 2.1.2
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