Vulnerability identifier: #VU61244

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-42020

CWE-ID: CWE-754

Exploitation vector: Network

Exploit availability: No

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

Vendor:

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to third-party component in its TFTP functionality fails to check for null terminations in file names. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://cert-portal.siemens.com/productcert/pdf/ssa-256353.pdf

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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.