Information disclosure in Synapse - CVE-2021-39164
Published: September 1, 2021
Vulnerability identifier: #VU56225
CSH Severity: Low
CVSS v4: 2.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-39164
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application. A remote authenticated attacker can gain unauthorized access to sensitive information on the system.
Affected software
Synapse
Fedora
matrix-synapse
Fedora
matrix-synapse
How to mitigate CVE-2021-39164
Install updates from vendor's website.
Synapse - addressed in versions 1.41.1, 1.42.0 rc1
matrix-synapse - addressed in versions 1.41.1-1.fc34, 1.41.1-1.fc35
matrix-synapse - addressed in versions 1.41.1-1.fc34, 1.41.1-1.fc35