#VU61240 Improperly implemented security check for standard in Siemens products - CVE-2021-42017

Vulnerability identifier: #VU61240

Vulnerability risk: Medium

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

CVE-ID: CVE-2021-42017

CWE-ID: CWE-358

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
RUGGEDCOM ROS M2100
RUGGEDCOM ROS RMC8388
RUGGEDCOM ROS RS416V2
RUGGEDCOM ROS RS900G
RUGGEDCOM ROS RS900G (32M)
RUGGEDCOM ROS RSG900
RUGGEDCOM ROS RSG920P
RUGGEDCOM ROS RSG2100 (32M)
RUGGEDCOM ROS RSG2100P (32M)
RUGGEDCOM ROS RSG2288
RUGGEDCOM ROS RSG2300
RUGGEDCOM ROS RSG2300P
RUGGEDCOM ROS RSG2488
RUGGEDCOM ROS RSL910
RUGGEDCOM ROS RST916C
RUGGEDCOM ROS RST916P
RUGGEDCOM ROS RST2228
RUGGEDCOM ROS RSG2100P

Software vendor:
Siemens

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

The vulnerability exists due to the implementation flaws of the CBC encryption mode. A remote attacker can perform a man-in-the-middle attack and eavesdrop on encrypted communications.

Install updates from vendor's website.

• https://cert-portal.siemens.com/productcert/pdf/ssa-256353.pdf