Multiple vulnerabilities in Siemens CPCI85 firmware of SICAM A8000 Devices

Published: 2023-10-11

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-36380 CVE-2023-42796
CWE-ID	CWE-798 CWE-22
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	CP-8031 MASTER MODULE Hardware solutions / Firmware CP-8050 MASTER MODULE Hardware solutions / Firmware CPCI85 Hardware solutions / Firmware
Vendor	Siemens

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Use of hard-coded credentials

EUVDB-ID: #VU81917

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-2023-36380

CWE-ID: CWE-798 - Use of Hard-coded Credentials

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain full access to vulnerable system.

The vulnerability exists due to presence of hard-coded credentials in the SSH authorized_keys configuration file. A remote unauthenticated attacker can access the affected system using the hard-coded credentials.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

CP-8031 MASTER MODULE: All versions

CP-8050 MASTER MODULE: All versions

CPCI85: before 05.11

CPE2.3

External links

https://cert-portal.siemens.com/productcert/pdf/ssa-134651.pdf

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.

2) Path traversal

EUVDB-ID: #VU81918

Risk: Medium

CVSSv4.0: 5.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-42796

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