matrix-synapse

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Description Matrix reference homeserver
Version 1.34.0-3 [community]

Resolved

Group Affected Fixed Severity Status Ticket
AVG-1943 1.29.0-1 1.33.2-1 Medium Fixed FS#70801
AVG-1341 1.23.0-1 1.24.0-1 Medium Fixed
AVG-1296 1.19.1-1 1.20.1-1 High Fixed
AVG-1252 1.20.1-1 1.21.0-1 High Fixed
AVG-846 0.34.0-1 0.34.1.1-1 High Fixed
Issue Group Severity Remote Type Description
CVE-2021-29471 AVG-1943 Medium Yes Denial of service
In Synapse before version 1.33.2 "Push rules" can specify conditions under which they will match, including `event_match`, which matches event content...
CVE-2020-26891 AVG-1252 High Yes Cross-site scripting
A security issue has been found in matrix-synapse before 1.21.0, where HTML pages served via Synapse were vulnerable to cross-site scripting (XSS) attacks.
CVE-2020-26890 AVG-1296 High Yes Denial of service
Matrix Synapse before 1.20.0 erroneously permits non-standard NaN, Infinity, and -Infinity JSON values in fields of m.room.member events, allowing remote...
CVE-2020-26257 AVG-1341 Medium Yes Denial of service
A security issue was found in matrix-synapse before version 1.23.1. A malicious or poorly-implemented homeserver can inject malformed events into a room by...
CVE-2019-5885 AVG-846 High No Private key recovery
matrix-synapse before 0.34.1 is vulnerable to private key recovery as synapse will attempt to derive a secret key from other secrets specified in the...

Advisories

Date Advisory Group Severity Type
25 May 2021 ASA-202105-19 AVG-1943 Medium denial of service
03 Nov 2020 ASA-202011-4 AVG-1252 High cross-site scripting
26 Nov 2020 ASA-202011-23 AVG-1296 High denial of service
24 Jan 2019 ASA-201901-12 AVG-846 High private key recovery