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

CVE-2020-8158

High
9.8/10

Summary

Prototype Pollution vulnerability in the typeorm package prior to 0.2.25 and 0.3.x and prior to 0.3.0-rc.20 may allow attackers to add or modify Object properties, leading to further Denial of Service or SQL Injection attacks.

  • 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