TippingPoint Zero Day Initiative

Bitdefender Internet Security cevakrnl Out-Of-Bounds Write Remote Code Execution Vulnerability

ZDI-17-333: May 11th, 2017

CVSS Score

Affected Vendors


Affected Products

    Internet Security

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Bitdefender Internet Security. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within cevakrnl.xmd. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated object. An attacker can leverage this vulnerability to execute code under the context of SYSTEM.

Vendor Response

Bitdefender states:

Fixed in cevakrnl.xmd (7.70464).

Disclosure Timeline

    2017-03-24 - Vulnerability reported to vendor
    2017-05-11 - Coordinated public release of advisory


This vulnerability was discovered by:
    Valentin Shilnenkov