SB2021090206 - Improper Authorization in Eclipse Mosquitto
Published: September 2, 2021
Security Bulletin ID
SB2021090206
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Authorization (CVE-ID: CVE-2021-34434)
CWE-ID: CWE-285 - Improper Authorization
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to bypass authorization checks.
The vulnerability exists due to a subscriptions revoke flaw when using the dynamic security plugin. A remote attacker can send a specially crafted request and obtain subscriptions information.
Remediation
Install update from vendor's website.