CVE-2021-27418

Summary

GE UR firmware versions prior to version 8.1x supports web interface with read-only access. The device fails to properly validate user input, making it possible to perform cross-site scripting attacks, which may be used to send a malicious script. Also, UR Firmware web server does not perform HTML encoding of user-supplied strings.

Affected Software

VendorProductVersion RangeStatus
GEUR familyunspecified < 8.1xaffected

Weaknesses

  • CWE-20: CWE-20 Improper Input Validation

Workarounds

GE recommends protecting UR IED by using network defense-in-depth practices. This includes, but is not limited to, placing UR IED inside the control system network security perimeter, and having access controls, monitoring (such as an Intrusion Detection System), and other mitigating technologies in place.

GE recommends users refer to the UR Deployment guide for secure configuration of UR IED and system.

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References