SB2019111339 - Insufficient verification of data authenticity in matrix-synapse package
Published: November 13, 2019
Security Bulletin ID
SB2019111339
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Insufficient verification of data authenticity (CVE-ID: CVE-2019-18835)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to the affected software mishandles signature checking on some federation APIs. Events sent over /send_join, /send_leave, and /invite may not be correctly signed, or may not come from expected hosts. A remote attacker can compromise the target system
Remediation
Install update from vendor's website.