Skip to main content

Improper Verification of Cryptographic Signature

CVE-2019-20837

High
7.5/10

Summary

An issue was discovered in Foxit Reader and PhantomPDF before 9.5. It allows signature validation bypass via a modified file or a file with non-standard signatures.

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

CWE-347 - Improper Verification of Cryptographic Signature

A cryptographic protocol is meant to ensure that services are provided in a secure manner. An application with absent or improper verification of cryptographic signatures allows malicious users to feed false messages to valid users or to disclose sensitive data, subverting the goals of the protocol. This can lead to security failures such as false authentication, account hijacking, and privilege escalation.

References

Advisory Timeline

  • Published