#VU28547 Improper access control in CPU LS4000 - CVE-2020-12493

Vulnerability identifier: #VU28547

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-12493

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
CPU LS4000
Hardware solutions / Firmware

Vendor: SWARCO

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to an open port used for debugging grants root access to the device without access control. A remote attacker can bypass implemented security restrictions, gain unauthorized access to the device and disturb operations with connected devices.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

CPU LS4000: G4

---

External links
https://cert.vde.com/de-de/advisories/vde-2020-016

---

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.