#VU52350 Out-of-bounds write in DiskStation Manager (DSM) - CVE-2021-26562
Published: April 20, 2021
Vulnerability identifier: #VU52350
Vulnerability risk: 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-2021-26562
CWE-ID: CWE-787
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 compromise vulnerable system.
The vulnerability exists due to a boundary error when processing "syno_finder_site" HTTP header. A remote attacker can perform a man-in-the-middle attack, trigger out-of-bounds write and execute arbitrary code on the target system.
Remediation
Install updates from vendor's website.