Denial of service in Allen-Bradley MicroLogix 1400 and Allen-Bradley MicroLogix 1100 - CVE-2017-7902
Published: May 24, 2017
Vulnerability identifier: #VU6698
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-7902
CWE-ID: CWE-323
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Rockwell Automation
Affected software:
Allen-Bradley MicroLogix 1400
Allen-Bradley MicroLogix 1100
Allen-Bradley MicroLogix 1400
Allen-Bradley MicroLogix 1100
Detailed vulnerability description
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to reuse of nonces by the affected software. A remote attacker can capture and replay a valid request until the nonce is changed.
Successful exploitation of the vulnerability may result in denial of service.
How to mitigate CVE-2017-7902
Update to version 21.00