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teTeX Multiple Vulnerabilities
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Secunia Advisory:
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SA27672
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Release Date:
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2007-11-16
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Popularity:
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4,864 views
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Critical:
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Less critical
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Impact:
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Manipulation of data
Exposure of sensitive information
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: | teTeX 3.x
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Binary Analysis:
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BA299 :: Available for 1 Credit 
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| CVE reference: | CVE-2007-5935
CVE-2007-5936
CVE-2007-5937
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Description:
Some vulnerabilities have been reported in teTeX, which can be exploited by malicious, local users to disclose and manipulate sensitive information and by malicious people to potentially compromise a vulnerable system.
1) A boundary error in dvips can be exploited to cause a stack-based buffer overflow when a user is tricked into opening a specially crafted DVI file containing an overly long hypertext reference.
Successful exploitation requires that dvips is invoked with the "-z" option.
2) Some boundary errors in dviljk can be exploited to cause buffer overflows when a user is enticed to print a specially crafted DVI file.
Successful exploitation of vulnerabilities #1 and #2 may allow execution of arbitrary code.
3) An error due to dvips using the insecure "tmpnam()" function when converting DVI files can potentially be exploited to disclose and modify sensitive information.
Solution:
Do not process DVI files from untrusted sources. Grant only trusted users access to affected systems.
Provided and/or discovered by:
1) Bastien Roucaries, reported via a Debian bug report.
2, 3) Joachim Schrod
Original Advisory:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=447081
http://bugs.gentoo.org/attachment.cgi?id=135423
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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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