Vulnerability identifier: #VU76261
Vulnerability risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-400
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Synapse
Server applications /
Conferencing, Collaboration and VoIP solutions
Vendor:
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources when generating URL previews for media stream. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
External links
http://github.com/matrix-org/synapse/security/advisories/GHSA-4822-jvwx-w47h
http://github.com/matrix-org/synapse/pull/11936
http://github.com/matrix-org/synapse/releases/tag/v1.53.0
http://github.com/matrix-org/synapse/releases/tag/v1.52.0
http://github.com/matrix-org/synapse/pull/11784
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.