Executive Summary

Title SwiftView ActiveX control and plug-in stack buffer overflow
Name VU#639169 First vendor Publication 2008-01-30
Vendor VU-CERT Last vendor Modification 2008-01-30
Severity (Vendor) N/A Revision M

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 10 Attack Range Network
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


Vulnerability Note VU#639169

SwiftView ActiveX control and plug-in stack buffer overflow


The SwiftView ActiveX control and plug-in contain a stack buffer overflow, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.

I. Description

SwiftView is software used to view or print PCL, HPGL, and TIFF files. SwiftSend is a product used for secure electronic document communications. Both of these products include the SwiftView ActiveX control and Netscape-style plug-in, which are provided by svocx.ocx and npsview.dll, respectively. The SwiftView ActiveX control and Netscape-style plug-in contain stack buffer overflows.

II. Impact

By convincing a user to view a specially crafted HTML document (e.g., a web page or an HTML email message or attachment), a remote, unauthenticated attacker may be able to execute arbitrary code with the privileges of the user on a vulnerable system.

III. Solution

Apply an update

This issue is addressed in version 8.3.5 of the SwiftView and SwiftSend software. Please see eLynx Security Bulletin SBSV-07-10-02 for more details.

Disable the SwiftView ActiveX control in Internet Explorer

The vulnerable ActiveX control can be disabled in Internet Explorer by setting the kill bit for the following CLSID:

More information about how to set the kill bit is available in Microsoft Support Document 240797. Alternatively, the following text can be saved as a .REG file and imported to set the kill bit for this control:
    Windows Registry Editor Version 5.00

    [HKEY_LOCAL_MACHINESOFTWAREMicrosoftInternet ExplorerActiveX Compatibility{7DD62E58-5FA8-11D2-AFB7-00104B64F126}]
    "Compatibility Flags"=dword:00000400
Disable the SwiftView plug-in in other browsers

The SwiftView plug-in can be disabled in other browsers, such as Firefox, by removing the npsview.dll file from the plugins directory.

Disable ActiveX

Disabling ActiveX controls in the Internet Zone (or any zone used by an attacker) appears to prevent exploitation of this and other ActiveX vulnerabilities. Instructions for disabling ActiveX in the Internet Zone can be found in the "Securing Your Web Browser" document.

Disable plug-ins

Disabling plug-ins by default can prevent exploitation of this and other plug-in vulnerabilities. This can be accomplished by configuring NoScript to Forbid other plugins for untrusted sites.

Systems Affected

VendorStatusDate Updated




This vulnerability was reported by Will Dormann of the CERT/CC

This document was written by Will Dormann.

Other Information

Date Public01/30/2008
Date First Published01/30/2008 03:14:36 PM
Date Last Updated01/30/2008
CERT Advisory 
CVE NameCVE-2007-5602
US-CERT Technical Alerts 
Document Revision13

Original Source

Url : http://www.kb.cert.org/vuls/id/639169

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer

Open Source Vulnerability Database (OSVDB)

Id Description
42837 SwiftView Viewer Plug-in for Mozilla Browsers (npsview.dll) Unspecified Overf...

A remote overflow exists in eLynx SwiftView Viewer. The SwiftView browser plugin for Mozilla fails proper bounds checking resulting in a stack based buffer overflow. With a specially crafted HTML page, an attacker can exploit the browser plugin to achieve remote code execution.
42836 SwiftView Viewer ActiveX (svocx.ocx) Unspecified Overflows

Snort® IPS/IDS

Date Description
2014-01-10 SwiftView ActiveX clsid unicode access
RuleID : 13424 - Revision : 6 - Type : WEB-ACTIVEX
2014-01-10 SwiftView ActiveX clsid access
RuleID : 13423 - Revision : 11 - Type : BROWSER-PLUGINS

Nessus® Vulnerability Scanner

Date Description
2008-01-31 Name : The remote Windows host contains a browser enhancement that is affected by a ...
File : swiftview_8_3_5_overflow.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2014-02-17 12:08:03
  • Multiple Updates