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Microsoft HTML Help Workshop ".hhp" Parsing Buffer Overflow
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Secunia Advisory:
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SA18740
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Release Date:
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2006-02-06
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Last Update:
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2006-02-14
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Popularity:
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16,911 views
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Critical:
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Moderately 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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Unpatched
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| Software: | Microsoft HTML Help Workshop 4.x
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| CVE reference: | CVE-2006-0564
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Description:
bratax has discovered a vulnerability in Microsoft HTML Help Workshop, which can be exploited by malicious people to compromise a user's system.
The vulnerability is caused due to a boundary error within the handling of a ".hhp" file that contains an overly long string in the "Contents file" field. This can be exploited to cause a stack-based buffer overflow and allows arbitrary code execution when a malicious ".hhp" file is opened.
Note: An exploit is publicly available.
The vulnerability has been confirmed in version 4.74.8702.0. Other versions may also be affected.
Solution:
Do not open untrusted ".hhp" files.
Provided and/or discovered by:
bratax
Changelog:
2006-02-14: Added CVE reference and link to US-CERT vulnerability note.
Original Advisory:
http://users.pandora.be/bratax/advisories/b008.html
Other References:
US-CERT VU#124460:
http://www.kb.cert.org/vuls/id/124460
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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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