Vulnerability identifier: #VU24777

Vulnerability risk: Medium

CVSSv3.1: 6.8 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C]

CVE-ID: CVE-2020-8438

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Ruckus R500
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Ruckus Networks

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to insufficient validation of user-supplied input in the hidden "/forms/nslookupHandler" form, as demonstrated by the "nslookuptarget=|cat${IFS}" substring. A remote administrator can execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Ruckus R500: 104.0.0.0.1347

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External links
http://sku11army.blogspot.com/2020/01/ruckus-rce-ruckus-m500-via-injection-on.html

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.