Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2018-10657 |
CWE-ID | CWE-20 |
Exploitation vector | Network |
Public exploit | This vulnerability is being exploited in the wild. |
Vulnerable software Subscribe |
Synapse Server applications / Conferencing, Collaboration and VoIP solutions |
Vendor | Matrix.org |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU12518
Risk: Medium
CVSSv3.1: 8.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2018-10657
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to an input validation error where malicious events injected with depth = 2^63 - 1 render rooms unusable, related to federation/federation_base.py and handlers/message.py. A remote attacker can send malicious messages and perform a denial of service attack.
Note: this vulnerability has been exploited in the wild in April 2018.
Update to version 0.28.1.
Vulnerable software versionsSynapse: 0.28.0
External linkshttp://github.com/matrix-org/synapse/commit/33f469ba19586bbafa0cf2c7d7c35463bdab87eb
http://matrix.org/blog/2018/05/01/security-update-synapse-0-28-1/
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?
Yes. This vulnerability is being exploited in the wild.