Stack-based buffer overflow in DiskStation Manager (DSM) - CVE-2021-26561
Published: April 20, 2021
Vulnerability identifier: #VU52349
CSH Severity: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-26561
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
DiskStation Manager (DSM)
DiskStation Manager (DSM)
Software vendor:
Synology Inc.
Synology Inc.
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing "syno_finder_site" HTTP header. A remote unauthenticated attacker can perform a man-in-the-middle attack, trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.