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/etc/profile set $TMP to /tmp. It's insecure!
- From: Atry <pop dot atry at gmail dot com>
- To: cygwin at cygwin dot com
- Date: Tue, 17 Jan 2012 19:06:55 +0800
- Subject: /etc/profile set $TMP to /tmp. It's insecure!
- References: <CA+nJC95ahtyFiRvrhmDY_poKqJb9royt=1Ah_9S-hCFtW92WUA@mail.gmail.com>
Original $TMP and $TEMP is unset in /etc/defaults/etc/skel/.bashrc
version 3.9-3, which make %USERPROFILE% directory dirty. After some
disscuss at http://cygwin.com/ml/cygwin/2011-03/msg00211.html,
/etc/profile version 4.0-6 set $TMP and $TEMP to /tmp. Now any program
start from bash, create temporary files in /tmp, or C:\cygwin\tmp.
Cygwin program, which approves /tmp 's mode 1777, creates temporary
files with mode 400. That's OK.
Native Win32 program, which ignores /tmp 's mode 1777, creates
temporary files with mode 755. These files can be read from any user.
Win32 process may leak internal data, cause potential privilege
I suggest that set $tmp (lowercase) to original $TMP, which is
meaningless for cygwin programs, and is recognized for Win32 programs.
Proposed settings in /etc/profile:
unset TMP TEMP
export tmp=`cygpath -w "$ORIGINAL_TMP"`
export temp=`cygpath -w "$ORIGINAL_TEMP"`
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