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Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

CVE-2021-4245

High
9.8/10

Summary

A vulnerability classified as problematic has been found in chbrown rfc6902 versions prior to 5.0.0. This affects an unknown part of the file "pointer.ts". The manipulation leads to improperly controlled modification of object prototype attributes ('prototype pollution'). The exploit has been disclosed to the public and may be used. It is recommended to apply a patch to fix this issue.

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

CWE-1321 - Prototype Pollution

Prototype pollution is one of the lesser-known vulnerabilities. It allows attackers to abuse the rules of JavaScript by injecting properties into the general object “Object” in JS. Modifying the prototype of “Object” affects the behavior of all objects in the entire app, potentially resulting in denial of service, arbitrary code execution, cross-site scripting, etc.

References

Advisory Timeline

  • Published