BitDefender Online Anti-Virus Scanner ActiveX OScan8.ocx / OScan8.ocx InitX Method Arbitrary Code Execution

High Nessus Plugin ID 28332


The remote Windows host has an ActiveX control that is affected by a buffer overflow vulnerability.


The remote host contains the 'BDSCANONLINE' ActiveX control, used by the BitDefender Online Scanner, a web-based virus scanner.

The version of this control installed on the remote host fails to properly validate Unicode values passed to the 'InitX' function as a domain key. If a remote attacker can trick a user on the affected host into visiting a specially crafted web page, these issues could be leveraged to allocate arbitrary heap-based memory and overwrite memory within the Internet Explorer or host ActiveX process, which could result in execution of arbitrary code on the host subject to the user's privileges.


The vendor has reportedly released an update that can be obtained by visiting the URL below, running a scan, and allowing the scanner to update the antivirus engine :

See Also

Plugin Details

Severity: High

ID: 28332

File Name: bitdefender_oscan8_activex_double_decode_overflow.nasl

Version: $Revision: 1.15 $

Type: local

Agent: windows

Family: Windows

Published: 2007/11/27

Modified: 2015/10/13

Dependencies: 13855

Risk Information

Risk Factor: High


Base Score: 9.3

Temporal Score: 7.7

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:bitdefender:antivirus

Required KB Items: SMB/Registry/Enumerated

Exploit Available: true

Exploit Ease: Exploits are available

Reference Information

CVE: CVE-2007-5775

BID: 26210

OSVDB: 40862