Vulnerability identifier: #VU81455
Vulnerability risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-284
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Synapse
Server applications /
Conferencing, Collaboration and VoIP solutions
Vendor: Matrix.org
Description
The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions. A remote user can forge read receipts for any event and mark the events as read for other application users.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Synapse: 0.34.0 - 1.92.3
External links
http://github.com/matrix-org/synapse/security/advisories/GHSA-7565-cq32-vx2x
http://github.com/matrix-org/synapse/pull/16327
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.