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AUSCERT External Security Bulletin Redistribution
ESB-2008.0109 -- [Win]
SwiftView ActiveX control and plug-in stack buffer overflow
1 February 2008
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AusCERT Security Bulletin Summary
---------------------------------
Product: SwiftView ActiveX control
Publisher: US-CERT
Operating System: Windows
Impact: Execute Arbitrary Code/Commands
Access: Remote/Unauthenticated
CVE Names: CVE-2007-5602
Original Bulletin: http://www.kb.cert.org/vuls/id/639169
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Vulnerability Note VU#639169
SwiftView ActiveX control and plug-in stack buffer overflow
Overview
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:
{7DD62E58-5FA8-11D2-AFB7-00104B64F126}
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_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX 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
Vendor Status Date Updated
SwiftView Vulnerable 22-Oct-2007
References
http://www.cert.org/tech_tips/securing_browser
http://www.swiftview.com/tech/security/bulletins/SBSV-07-10-02.htm
http://support.microsoft.com/kb/240797
Credit
This vulnerability was reported by Will Dormann of the CERT/CC
This document was written by Will Dormann.
Other Information
Date Public 01/30/2008
Date First Published 01/30/2008 03:14:36 PM
Date Last Updated 01/30/2008
CERT Advisory
CVE Name CVE-2007-5602
US-CERT Technical Alerts
Metric
10.60
Document Revision
13
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