Information disclosure in Prosody - CVE-2021-37601
Published: June 8, 2025
Vulnerability identifier: #VU110631
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-37601
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Prosody
Affected software:
Prosody
Prosody
Detailed vulnerability description
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application in muc.lib.lua. A remote attacker can gain unauthorized access to sensitive information (list of admins, members, owners, and banned entities of a Multi-User chat room).
How to mitigate CVE-2021-37601
Install updates from vendor's website.
Sources
- http://www.openwall.com/lists/oss-security/2021/07/28/4
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7BZRRPCNOETB4MN4XSYPRBBKDIHO27DY/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EMKIOEP2CYWHVVUCNWISPE4AGH4IR7O2/
- https://prosody.im/security/advisory_20210722/