Path traversal in Cassia Networks Access Controller

1) Path traversal

EUVDB-ID: #VU52795

Risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-22685

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

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

The vulnerability exists due to input validation error when processing directory traversal sequences. A local 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

Access Controller: All versions

CPE2.3

• cpe:2.3:a:cassia_networks:access_controller:*:*:*:*:*:*:*:*

External links

https://ics-cert.us-cert.gov/advisories/icsa-21-119-02

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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