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XDICT Buffer Overrun Vulnerability
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SUMMARY
<http://www.kingsoft.com> XDICT is a very popular translation Software
(CHINESE ENGLISH) in China.
While using the XDICT's 'Screen Fetch' feature it is possible to overflow
a buffer within XDICT and cause arbitrary code execution.
DETAILS
Vulnerable Systems:
* XDICT 2002
* XDICT 2003
* XDICT 2004
* XDICT 2005
When using the 'Screen Fetch' feature of XDICT that allows for fetching of
the word from the screen, XDICT automatically traces mouse input and
returns the translation of the word or sentence pointed.
When pointing on a word, XDICT will copy the text to an internal buffer
and will begin searching for the translation in it's dictionary. A long
word or sentence can be used to overflow the internal buffer used and will
cause the process to consume all CPU resources which will hang and then
crash the erroneous process. It is interesting to note that XDICT 2005 on
Win2K Pro+ will gracefully quit instead of crashing.
In order to demonstrate this bug, open notepad and type in at least 88
characters (i.e.: 'A' x 88) with no spaces in between. Using the mouse and
pointing on the word, the contents will be copied and the buffer
overflowed, enabling an attacker the ability to execute code on the target
machine with proper malicious input.
Vendor Status:
2004.10.26 Vendor notice
2004.10.27 The vendor reply that this bug is submitted to the TEST
department NO further reply
ADDITIONAL INFORMATION
The information has been provided by <mailto:smaillist@gmail.com> Sowhat
.
The original article can be found at:
<http://secway.org/Advisory/Ad20041026EN.txt>
http://secway.org/Advisory/Ad20041026EN.txt
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