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The vulnerability in Paragon Software products (e.g., Partition Manager, Hard Disk Manager) stems from improper input validation in the `biontdrv.sys` driver. The `memmove` function fails to validate user-controlled input, allowing attackers to write arbitrary data to kernel memory. This flaw enables privilege escalation by overwriting critical kernel structures. The exploit involves sending crafted IOCTL requests to the vulnerable driver, which processes them without proper bounds checking, leading to controlled memory corruption.
DailyCVE Form
Platform: Paragon Software
Version: 15 – 17.9.1
Vulnerability: Kernel Memory Write
Severity: Critical
Date: 2025-03-27
Prediction: Patch by 2025-06-30
What Undercode Say
Check vulnerable driver driverquery | findstr "biontdrv.sys" Exploit PoC (simulated) ioctl_attack --driver biontdrv.sys --payload "arbitrary_write"
How Exploit
- Craft malicious IOCTL request to
biontdrv.sys. - Abuse `memmove` to overwrite kernel memory.
- Escalate privileges via corrupted structures.
Protection from this CVE
- Apply vendor patches.
- Restrict driver access.
- Disable vulnerable drivers.
Impact
- Full system compromise.
- Privilege escalation.
- Kernel-level persistence.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
