#VU51924 OS Command Injection in FactoryTalk AssetCentre - CVE-2021-27476

Vulnerability identifier: #VU51924

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-27476

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FactoryTalk AssetCentre
Server applications / Other server solutions

Vendor: Rockwell Automation

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 SaveConfigFile function of the RACompare Service. A remote attacker 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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FactoryTalk AssetCentre: 10.00

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External links
https://ics-cert.us-cert.gov/advisories/icsa-21-091-01

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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