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Tk GIF Processing Buffer Overflow Vulnerabilities
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Secunia Advisory:
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SA26942
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Release Date:
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2007-09-27
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Last Update:
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2007-10-19
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Popularity:
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7,109 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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Vendor Patch
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| Software: | Tcl/Tk 8.x
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| CVE reference: | CVE-2007-4851
CVE-2007-5137
CVE-2007-5378
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Description:
Some vulnerabilities have been reported in Tk, which can potentially be exploited by malicious people to compromise an application using the library.
1) A vulnerability is caused due to a boundary error within the "ReadImage()" function in generic/tkImgGIF.c. This can be exploited to cause a buffer overflow via interlaced GIF files containing multiple smaller frames following the first frame.
2) A vulnerability is caused due to a boundary error within the "FileReadGIF()" function in generic/tkImgGIF.c. This can be exploited to cause a buffer overflow via specially crafted GIF files.
Successful exploitation of the vulnerabilities may allow execution of arbitrary code.
The vulnerabilities are reported in versions prior to 8.4.16.
Solution:
Update to version 8.4.16.
http://www.tcl.tk/software/tcltk/downloadnow84.tml
Provided and/or discovered by:
1) Reported by the vendor.
2) Schelte Bron
Changelog:
2007-10-01: Added CVE reference.
2007-10-08: Added CVE reference.
2007-10-19: Added vulnerability #2.
Original Advisory:
http://sourceforge.net/project/shownotes.php?release_id=541207
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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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