#VU52299 Path traversal in C-Bus Toolkit - CVE-2021-22720

Vulnerability identifier: #VU52299

Vulnerability risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-22720

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
C-Bus Toolkit
Other software / Other software solutions

Vendor: Schneider Electric

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 authenticated attacker can send a specially crafted HTTP request and read arbitrary files on the system, leading to remote code execution when restoring a project..

Mitigation
Install update from vendor's website.

Vulnerable software versions

C-Bus Toolkit: 1.15.7

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External links
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-103-01

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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.