TippingPoint Zero Day Initiative
 

Bitdefender Internet Security NSIS Sections Integer Overflow Remote Code Execution Vulnerability

ZDI-17-647: August 11th, 2017

CVSS Score

Affected Vendors

    Bitdefender

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 nsis.xmd. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code under the context of SYSTEM.

Vendor Response

Bitdefender states:


January 31: The issue is now fixed: Version - 7876821


Disclosure Timeline

    2017-01-23 - Vulnerability reported to vendor
    2017-08-11 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    Pagefault