#VU52351 Improper access control in DiskStation Manager (DSM) - CVE-2021-26563

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Main Vulnerability Database Vulnerabilities #VU52351

#VU52351 Improper access control in DiskStation Manager (DSM) - CVE-2021-26563

Published: April 20, 2021


Vulnerability identifier: #VU52351
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:U/U:Clear
CVE-ID: CVE-2021-26563
CWE-ID: CWE-284
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
DiskStation Manager (DSM)
Software vendor:
Synology Inc.

Description

The vulnerability allows a local user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in AppArmor’s synosearchagent profile. A local administrator can use a specially crafted kernel module to bypass the AppArmor’s restrictions.


Remediation

Install updates from vendor's website.

External links