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Use of Incorrectly-Resolved Name or Reference

CVE-2021-31920

Severity Medium
Score 6.5/10

Summary

Istio before 1.8.6 and 1.9.x before 1.9.5 has a remotely exploitable vulnerability where an HTTP request path with multiple slashes or escaped slash characters (%2F or %5C) could potentially bypass an Istio authorization policy when path based authorization rules are used.

  • LOW
  • NETWORK
  • NONE
  • UNCHANGED
  • NONE
  • LOW
  • HIGH
  • NONE

CWE-706 - Use of Incorrectly-Resolved Name or Reference

The software uses a name or reference to access a resource, but the name/reference resolves to a resource that is outside of the intended control sphere.

References

Advisory Timeline

  • Published