Denial of service in Matrix Synapse



Published: 2023-05-22
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-31152
CWE-ID CWE-755
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Synapse
Server applications / Conferencing, Collaboration and VoIP solutions

Vendor

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper handling of exceptional conditions

EUVDB-ID: #VU76406

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: CVE-2022-31152

CWE-ID: CWE-755 - Improper Handling of Exceptional Conditions

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper handling of errors. A remote attacker can send specially crafted input and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Synapse: before 1.62.0

External links

http://github.com/matrix-org/synapse/pull/13087
http://github.com/matrix-org/synapse/pull/13088
http://github.com/matrix-org/synapse/releases/tag/v1.62.0
http://github.com/matrix-org/synapse/security/advisories/GHSA-jhjh-776m-4765


Q & A

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.



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