SB2021070508 - Improper access control in QNAP Hybrid Backup Sync
Published: July 5, 2021 Updated: July 8, 2021
Security Bulletin ID
SB2021070508
CSH 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 vulnerability.
1) Missing Authentication for Critical Function (CVE-ID: CVE-2021-28809)
CWE-ID: CWE-306 - Missing Authentication for Critical Function
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to missing authentication in the within the RTSS server. A remote non-authenticated attacker can send a specially crafted request to port 8899/TCP and execute arbitrary code in the context of the Administrator.
Remediation
Install update from vendor's website.