SB2023060718 - Multiple vulnerabilities in Matrix Synapse

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Main Vulnerability Database SB2023060718

SB2023060718 - Multiple vulnerabilities in Matrix Synapse

Published: June 7, 2023 Updated: June 8, 2023

Security Bulletin ID SB2023060718
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2023-32683)

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input within the oEmbed and image URLs. A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.


2) Improper access control (CVE-ID: CVE-2023-32682)

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper checks for deactivated users during login. A remote user can login when using uncommon configurations.


Remediation

Install update from vendor's website.

References