OS Command Injection in AWK-3131A Series - CVE-2019-5140
Published: February 24, 2020 / Updated: February 25, 2020
Vulnerability identifier: #VU25527
CSH Severity: High
CVSS v4.0: 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/E:U/U:Amber
CVE-ID: CVE-2019-5140
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Moxa
Affected software:
AWK-3131A Series
AWK-3131A Series
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation in the "iw_webs" functionality. A specially crafted diagnostic script file name can cause user input to be reflected in a subsequent "iw_system" call. A remote authenticated attacker can send specially crafted commands and execute arbitrary OS commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2019-5140
Install updates from vendor's website.