#VU51377 Improper Restriction of Excessive Authentication Attempts


Published: 2021-03-10

Vulnerability identifier: #VU51377

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-2021-25676

CWE-ID: CWE-307

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
RUGGEDCOM RM1224
Hardware solutions / Routers & switches, VoIP, GSM, etc
SCALANCE SC-600
Hardware solutions / Routers & switches, VoIP, GSM, etc
SCALANCE M-800 / S615
Hardware solutions / Firmware

Vendor: Siemens

Description

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

The vulnerability exists due to the authentication mechanism has no brute-force prevention. A remote attacker can cause a denial of service condition on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

RUGGEDCOM RM1224: 6.3

SCALANCE M-800 / S615: 6.3


External links
http://ics-cert.us-cert.gov/advisories/icsa-21-068-02


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.


Latest bulletins with this vulnerability