Bugzilla Bug 199421

TITLE:
teTeX Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA27672

VERIFY ADVISORY:
http://secunia.com/advisories/27672/

CRITICAL:
Less critical

IMPACT:
Manipulation of data, Exposure of sensitive information, DoS, System
access

WHERE:
>From remote

SOFTWARE:
teTeX 3.x
http://secunia.com/product/6388/

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


Reproducible: Always

*** This bug has been marked as a duplicate of bug 198238 ***