Inadequate Encryption Strength in Siemens products - CVE-2023-29054

Vulnerability identifier: #VU75031

CSH Severity: Medium

CVSS v4: 5.9 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:A/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-29054

CWE-ID: CWE-326

Exploitation vector: Adjecent network

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the SSH server is configured to offer weak ciphers by default. A remote attacker on the local network can perform a man-in-the-middle attack to read and modify any data passed over the connection between legitimate clients and the affected device.

SCALANCE X200-4P IRT
SCALANCE X201-3P IRT
SCALANCE X201-3P IRT PRO
SCALANCE X202-2IRT
SCALANCE X202-2P IRT
SCALANCE X202-2P IRT PRO
SCALANCE X204IRT
SCALANCE X204IRT PRO
SCALANCE XF201-3P IRT
SCALANCE XF202-2P IRT
SCALANCE XF204-2BA IRT
SCALANCE XF204IRT
SIPLUS NET SCALANCE X202-2P IRT

Install updates from vendor's website.

SCALANCE X200-4P IRT - update to 5.5.2
SCALANCE X201-3P IRT - update to 5.5.2
SCALANCE X201-3P IRT PRO - update to 5.5.2
SCALANCE X202-2IRT - update to 5.5.2
SCALANCE X202-2P IRT - update to 5.5.2
SCALANCE X202-2P IRT PRO - update to 5.5.2
SCALANCE X204IRT - update to 5.5.2
SCALANCE X204IRT PRO - update to 5.5.2
SCALANCE XF201-3P IRT - update to 5.5.2
SCALANCE XF202-2P IRT - update to 5.5.2
SCALANCE XF204-2BA IRT - update to 5.5.2
SCALANCE XF204IRT - update to 5.5.2
SIPLUS NET SCALANCE X202-2P IRT - update to 5.5.2

• https://cert-portal.siemens.com/productcert/pdf/ssa-479249.pdf

• Inadequate Encryption Strength in Siemens SCALANCE X-200IRT Devices