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Date: Wed, 13 Feb 2002 01:43:59 GMT
From: Aidan Skinner <aidan@kai.velvet.net>
Reply-To: Aidan Skinner <aidan@kai.velvet.net>
To: FreeBSD-gnats-submit@freebsd.org
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Subject: ports/34893: RUS-CERT Advisory 2002-02:01: Temporary file handling in GNAT	
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>Number:         34893
>Category:       ports
>Synopsis:       RUS-CERT Advisory 2002-02:01: Temporary file handling in GNAT
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-ports
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Feb 12 17:50:01 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Aidan Skinner
>Release:        FreeBSD 4.5-STABLE i386
>Organization:
Velvet Networks
>Environment:
System: FreeBSD kai.velvet.net 4.5-STABLE FreeBSD 4.5-STABLE #1: Fri Feb 9 02:28:32 GMT 2001 root@xev.velvet.net:/usr/obj/usr/src/sys/GENERIC i386


>Description:

  Gnat uses mktemp to generate temporary files instead of mkstemp, leading to a race 
  condition in generated programs that use temporary files 

  See http://www.securityfocus.com/archive/1/255734

>How-To-Repeat:

	$ echo "Procedure Foo is begin null; end Foo;" > foo.adb
	$ /usr/local/bin/gnatmake foo.adb
	adagcc -c foo.adb
	gnatbind -x foo.ali
	gnatlink foo.ali
	/usr/local/lib/gcc-lib/i386-unknown-freebsd4.5/2.8.1/adalib//libgnat.so: warning: tmpnam() possibly used unsafely; consider using mkstemp()
 	/usr/local/lib/gcc-lib/i386-unknown-freebsd4.5/2.8.1/adalib//libgnat.so: warning: mktemp() possibly used unsafely; consider using mkstemp()
 
>Fix:

  Apply the patch at http://cert.uni-stuttgart.de/files/fw/gnat-3.14p-mkstemp.diff in 
  ${PORTSDIR}/lang/gnat/work/gcc-2.8.1/src
>Release-Note:
>Audit-Trail:
>Unformatted:

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