#VU69521 Path traversal in AVEVA Edge - CVE-2021-42797

Vulnerability identifier: #VU69521

Vulnerability risk: High

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:Amber]

CVE-ID: CVE-2021-42797

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
AVEVA Edge
Server applications / SCADA systems

Vendor: AVEVA Software, LLC.

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

AVEVA Edge: 2020 R2 SP1 - 2020 R2

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External links
https://ics-cert.us-cert.gov/advisories/icsa-22-326-01

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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.