[8490] in bugtraq

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Buffer overflow in Xprt

daemon@ATHENA.MIT.EDU (Paolo Molaro)
Tue Nov 10 16:58:37 1998

Mail-Followup-To: BUGTRAQ@NETSPACE.ORG
Date: 	Mon, 9 Nov 1998 19:24:25 +0100
Reply-To: Paolo Molaro <lupus@LETTERE.UNIPD.IT>
From: Paolo Molaro <lupus@LETTERE.UNIPD.IT>
To: BUGTRAQ@NETSPACE.ORG

There is a buffer overflow in the postscript backend of the
Xprint server: look at the S_OutStr() function in the file psout.c.
A user-supplied variable-lenght string is stored in a 512 sized buffer.
This bug is present in version R6, public-patch-3 and later.

WORKAROUND: do not run the Xprt server.
FIX: make the function malloc() a buffer big enough and recompile.

xfree86 and opengroup have been notified a while ago.

lupus

--
"The number of UNIX installations has grown to 10, with more expected."
    - _The UNIX Programmer's Manual_, Second Edition, June, 1972.

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