SB2021120308 - Denial of service in Hitachi Energy RTU500 series CMU
Published: December 3, 2021
Security Bulletin ID
SB2021120308
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 security vulnerability.
1) Input validation error (CVE-ID: CVE-2021-35533)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in the APDU parser of the BCI IEC 60870-5-104 function. A remote attacker can send a specially crafted message and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.