CVE-2017-7902: Critical severity rockwell automation 1763-l16awa series a vulnerability
A "Reusing a Nonce, Key Pair in Encryption" issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 programmable-logic controllers 1763-L16AWA, Series A and B, Version 16.00 and prior versions; 1763-L16BBB, Series A and B, Version 16.00 and prior versions; 1763-L16BWA, Series A and B, Version 16.00 and prior versions; and 1763-L16DWD, Series A and B, Version 16.00 and prior versions and Allen-Bradley MicroLogix 1400 programmable logic controllers 1766-L32AWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWAA, Series A and B, Version 16.00 and prior versions; 1766-L32BXB, Series A and B, Version 16.00 and prior versions; 1766-L32BXBA, Series A and B, Version 16.00 and prior versions; and 1766-L32AWAA, Series A and B, Version 16.00 and prior versions. The affected product reuses nonces, which may allow an attacker to capture and replay a valid request until the nonce is changed.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2017-7902?
CVE-2017-7902 has a severity rating that indicates a critical risk, as it involves reusing a nonce in encryption affecting multiple Rockwell Automation controllers.
How do I fix CVE-2017-7902?
To mitigate CVE-2017-7902, users should update their Rockwell Automation Allen-Bradley MicroLogix 1100 controllers to the latest firmware version beyond 16.00.
Which Rockwell Automation devices are affected by CVE-2017-7902?
CVE-2017-7902 affects Rockwell Automation Allen-Bradley MicroLogix 1100 controllers of various models including Series A and B, specifically versions up to 16.00.
What type of vulnerability is CVE-2017-7902?
CVE-2017-7902 is categorized as a cryptographic issue due to the improper reuse of nonces and key pairs in encryption.
Is CVE-2017-7902 being actively exploited?
There is no public indication that CVE-2017-7902 is actively being exploited, but it poses a serious security risk and should be addressed immediately.