SB2023101171 - Multiple vulnerabilities in Siemens CPCI85 firmware of SICAM A8000 Devices

Description

This security bulletin contains information about 2 vulnerabilities.

1) Use of hard-coded credentials (CVE-ID: CVE-2023-36380)

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

CVSSv4: 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

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.

2) Path traversal (CVE-ID: CVE-2023-42796)

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

CVSSv4: 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

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

The vulnerability exists due to input validation error when processing directory traversal sequences in the /sicweb-ajax/tmproot/ endpoint. A remote user can send a specially crafted HTTP request and download arbitrary files on the system, leading to privilege escalation.

Remediation

Install update from vendor's website.

References

• https://cert-portal.siemens.com/productcert/pdf/ssa-134651.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-770890.pdf