OS Command Injection in ZyWALL VPN2S - CVE-2021-35028
Published: October 4, 2021
Vulnerability identifier: #VU57009
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-35028
CWE-ID: CWE-78
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation in the CGI program. A local user can pass specially crafted data 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
ZyWALL VPN2S
How to mitigate CVE-2021-35028
Install updates from vendor's website.
ZyWALL VPN2S - update to 1.20(ABLN.2)_00210624C1