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Time-of-check Time-of-use (TOCTOU) Race Condition

CVE-2024-10972

High
7.3/10

Summary

Velocidex WinPmem versions 4.1 and below suffer from an Improper Input Validation vulnerability whereby an attacker with admin access can trigger a BSOD with a parallel thread changing the memory’s access right under the control of the user-mode application. This is due to verification only being performed at the beginning of the routine allowing the userspace to change page permissions half way through the routine.  A valid workaround is a rule to detect unauthorized loading of winpmem outside incident response operations.

  • LOW
  • LOCAL
  • LOW
  • CHANGED
  • NONE
  • HIGH
  • LOW
  • HIGH

CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

The software checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the software to perform invalid actions when the resource is in an unexpected state.

References

Advisory Timeline

  • Published