SB2021031011 - Denial of service in Siemens SCALANCE and RUGGEDCOM Devices
Published: March 10, 2021
Security Bulletin ID
SB2021031011
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Restriction of Excessive Authentication Attempts (CVE-ID: CVE-2021-25676)
CWE-ID: CWE-307 - Improper Restriction of Excessive Authentication Attempts
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
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.
Remediation
Install update from vendor's website.