SB2020070605 - Information disclosure in Beckhoff TwinCAT RT network driver
Published: July 6, 2020
Security Bulletin ID
SB2020070605
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Information disclosure (CVE-ID: CVE-2020-12494)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to TwinCAT RT network driver for Intel 8254x and 8255x does not properly construct frames if their payload is less than the minimum Ethernet frame size. As a result, arbitrary system memory contents is transmitted within in the padding bytes of the frame.
Remediation
Install update from vendor's website.