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CVE-2017-7903

CRITICALCVSS 9.8/10EPSS 2.74%

Last modified

CVE-2017-7903 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A Weak Password Requirements 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 products use a numeric password with a small maximum character size for the password.. EPSS estimates a 2.74% chance of exploitation in the next 30 days.

Description

A Weak Password Requirements 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 products use a numeric password with a small maximum character size for the password.

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
2.74%

84.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Rockwellautomation1763-L16awa Series A<= 16.000
Rockwellautomation1763-L16awa Series B<= 16.000
Rockwellautomation1763-L16bbb Series A<= 16.000
Rockwellautomation1763-L16bbb Series B<= 16.000
Rockwellautomation1763-L16bwa Series A<= 16.000
Rockwellautomation1763-L16bwa Series B<= 16.000
Rockwellautomation1763-L16dwd Series A<= 16.000
Rockwellautomation1763-L16dwd Series B<= 16.000
Rockwellautomation1766-L32awa Series A<= 16.000
Rockwellautomation1766-L32awa Series B<= 16.000
Rockwellautomation1766-L32awaa Series A<= 16.000
Rockwellautomation1766-L32awaa Series B<= 16.000
Rockwellautomation1766-L32bwa Series A<= 16.000
Rockwellautomation1766-L32bwa Series B<= 16.000
Rockwellautomation1766-L32bwaa Series A<= 16.000
Rockwellautomation1766-L32bwaa Series B<= 16.000
Rockwellautomation1766-L32bxb Series A<= 16.000
Rockwellautomation1766-L32bxb Series B<= 16.000
Rockwellautomation1766-L32bxba Series A<= 16.000
Rockwellautomation1766-L32bxba Series B<= 16.000

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2017-7903?
A Weak Password Requirements 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 products use a numeric password with a small maximum character size for the password.
How severe is CVE-2017-7903?
CVE-2017-7903 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.74% probability of exploitation in the next 30 days.
How do I fix CVE-2017-7903?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-7903?

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Source: NVD / NIST