#VU25527 OS Command Injection in AWK-3131A Series


Published: 2020-02-24 | Updated: 2020-02-25

Vulnerability identifier: #VU25527

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-5140

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
AWK-3131A Series
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Moxa

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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

AWK-3131A Series: 1.13


External links
http://www.moxa.com/en/support/support/security-advisory/awk-3131a-series-industrial-ap-bridge-client-vulnerabilities
http://talosintelligence.com/vulnerability_reports/TALOS-2019-0929


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.


Latest bulletins with this vulnerability