#VU57090 Path traversal in Honeywell International, Inc products - CVE-2021-38399

Vulnerability identifier: #VU57090

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-38399

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Experion Process Knowledge System C200
Hardware solutions / Firmware
Experion Process Knowledge System C200E
Hardware solutions / Firmware
Experion Process Knowledge System C300 and ACE controllers
Hardware solutions / Firmware

Vendor: Honeywell International, Inc

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Experion Process Knowledge System C200: All versions

Experion Process Knowledge System C200E: All versions

Experion Process Knowledge System C300 and ACE controllers: before R510.2 Hotfix10

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External links
https://ics-cert.us-cert.gov/advisories/icsa-21-278-04
https://www.honeywellprocess.com/library/support/notifications/Customer/SN2021-02-22-01-Experion-C300-CCL.pdf

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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.