OS Command Injection in SonicWall NSM On-Prem - CVE-2021-20026
Published: May 27, 2021
Vulnerability identifier: #VU53632
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-20026
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation when processing HTTP requests. A remote authenticated user can pass specially crafted HTTP request to the application and execute arbitrary OS commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
SonicWall NSM On-Prem
How to mitigate CVE-2021-20026
Install updates from vendor's website.
SonicWall NSM On-Prem - update to 2.2.1-R6