Path traversal in Black Box KVM Switches and Extenders



Published: 2023-01-11
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-4636
CWE-ID CWE-22
Exploitation vector Network
Public exploit N/A
Vulnerable software
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KVM ACR1000A-R-R2
Hardware solutions / Routers & switches, VoIP, GSM, etc

KVM ACR1000A-T-R2
Hardware solutions / Routers & switches, VoIP, GSM, etc

KVM ACR1002A-T
Hardware solutions / Routers & switches, VoIP, GSM, etc

KVM ACR1002A-R
Hardware solutions / Routers & switches, VoIP, GSM, etc

KVM ACR1020A-T
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor Black Box

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Path traversal

EUVDB-ID: #VU71074

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-4636

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

Exploit availability: No

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

KVM ACR1000A-R-R2: 3.4.31307

KVM ACR1000A-T-R2: 3.4.31307

KVM ACR1002A-T: 3.4.31307

KVM ACR1002A-R: 3.4.31307

KVM ACR1020A-T: 3.4.31307

External links

http://www.cisa.gov/uscert/ics/advisories/icsa-23-010-01


Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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