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Adobe Acrobat Reader ActiveX Control Buffer Overflow Vulnerability
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Secunia Advisory:
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SA12303
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Release Date:
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2004-08-16
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Last Update:
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2004-08-18
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Popularity:
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35,946 views
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Critical:
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Highly critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Partial Fix
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| Software: | Adobe Acrobat Reader 5.x
Adobe Reader 6.x
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| CVE reference: | CVE-2004-0629
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Description:
Rafel Ivgi has reported a vulnerability in Adobe Acrobat Reader, which potentially can be exploited by malicious people to compromise a user's system.
The vulnerability is caused due to a boundary error within the "pdf.ocx" ActiveX component supplied with Adobe Acrobat Reader. This can e.g. be exploited via a malicious website using a specially crafted URL to potentially execute arbitrary code.
Example:
http://[host]/[directory]/[existing_pdf].pdf%00[long_string]
NOTE: This only works on servers, which truncate the URL before the "%00" sequence (e.g. IIS and Netscape Enterprise).
The vulnerability has been reported in version 5.0.5. Other versions may also be affected.
Solution:
The vendor has stated that this issue was fixed in Adobe Acrobat Reader 6.0.2. However, it has been reported that the issue might not have been completely fixed and still can be used to cause a Denial of Service (DoS).
Prevent PDF files from automatically being opened in a web browser:
1. Open Adobe Acrobat/Acrobat Reader.
2. Edit --> Preferences --> Internet.
3. Uncheck the "Display PDF in browser" setting.
Provided and/or discovered by:
Rafel Ivgi
Changelog:
2004-08-18: Updated steps in "Solution" section.
Original Advisory:
http://www.idefense.com/application/poi/display?id=126&type=vulnerabilities
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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