9.3 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
0.869 High
EPSS
Percentile
98.6%
The E-Book Systems FlipViewer ActiveX control contains multiple stack buffer overflows, which can allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.
E-Book Systems FlipViewer is software for viewing “FlipBooks.” FlipViewer includes an ActiveX control called FViewerLoading
, which is provided by the file FlipViewerX.dll
. This ActiveX control contains multiple stack buffer overflow vulnerabilities. Vulnerable properties include UID
, Opf
, PAGENO
, LaunchMode
, SubID
, BookID
, LibraryID
, SubURL
, and LoadOpf
.
By convincing a user to view a specially crafted HTML document (e.g., a web page or an HTML email message or attachment), an attacker may be able to execute arbitrary code with the privileges of the user. The attacker could also cause Internet Explorer (or the program using the WebBrowser control) to crash.
Apply an update
This issue is addressed in FlipViewer 4.1. If you are unable to upgrade, please consider the following workarounds
Disable the FlipViewer ActiveX control in Internet Explorer
The vulnerable ActiveX control can be disabled in Internet Explorer by setting the kill bit for the following CLSID:
{BA83FD38-CE14-4DA3-BEF5-96050D55F78A}
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\{BA83FD38-CE14-4DA3-BEF5-96050D55F78A}]
"Compatibility Flags"=dword:00000400
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.
449089
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Notified: February 21, 2007 Updated: June 06, 2007
Affected
This issue is addressed in FlipViewer 4.1
The vendor has not provided us with any further information regarding this vulnerability.
If you are unable to upgrade, please disable the vulnerable ActiveX control.
If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23449089 Feedback>).
Group | Score | Vector |
---|---|---|
Base | ||
Temporal | ||
Environmental |
This vulnerability was reported by Will Dormann of CERT/CC.
This document was written by Will Dormann.
CVE IDs: | CVE-2007-2919 |
---|---|
Severity Metric: | 0.86 Date Public: |