Spoofing attack in Matrix Synapse
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2018-16515 |
| CWE-ID | CWE-347 |
| 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 high risk vulnerability.
1) Improper Verification of Cryptographic Signature
EUVDB-ID: #VU76260
Risk: High
CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-16515
CWE-ID:
CWE-347 - Improper Verification of Cryptographic Signature
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exist due to improper signature validation. A remote attacker can spoof application events and compromise the application.
Install updates from vendor's website.
Vulnerable software versionsSynapse: before 0.33.3.1
External linkshttp://github.com/matrix-org/synapse/issues/3796#event-1833126269
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IRW7YR2H3ASUSYX4AO4KMY3FNVDNYW3P/
http://matrix.org/blog/2018/09/06/critical-security-update-synapse-0-33-3-1/
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?
No. We are not aware of malware exploiting this vulnerability.
