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X11 libXfont PCF Integer Overflow Vulnerability
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Secunia Advisory:
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SA21450
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Release Date:
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2006-08-11
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Popularity:
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8,480 views
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Critical:
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Moderately critical
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Impact:
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DoS
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: | X Window System 11 (X11) 6.x
X Window System 11 (X11) 7.x
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Description:
A vulnerability has been reported in libXfont, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise an application using the library.
The vulnerability is caused due to integer overflows within the PCF font file parser. This can potentially be exploited to cause a heap-based buffer overflow via a specially crafted font file.
This is related to:
SA20100
Successful exploitation may allow execution of arbitrary code.
Solution:
Apply patch.
http://bugs.freedesktop.org/attachment.cgi?id=6231
Original Advisory:
https://bugs.freedesktop.org/show_bug.cgi?id=7535
Other References:
SA20100:
http://secunia.com/advisories/20100/
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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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