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unix7.var-sadm.txt

unix7.var-sadm.txt
Posted Nov 12, 1999
Authored by Shane A. Macaulay

When patches/fixes are applied to binaries on UnixWare 7, the original, unpatched binary files (with the suid/sgid bits maintained) are stored in /var/sadm. By default, the permissions on this directory is 755. This allows normal users to execute and exploit old binaries leftover from patching.

tags | exploit
systems | unixware
SHA-256 | ddcc3aea580eae13df34903d75ef698ba2a71c314c68aee75fb50df4903aaa5d

unix7.var-sadm.txt

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---------------------------------------------------------------------------
Discovered by: ktwo (ktwo@ktwo.ca)

When patches/fixes are applied to binaries on UnixWare 7, the original,
unpatched binary files (with the suid/sgid bits maintained) are stored
in /var/sadm. By default, the permissions on this directory is 755.
This allows normal users to execute and exploit old binaries leftover
from patching.

---------------------------------------------------------------------------
Patch:

Run 'chmod o-rx /var/sadm' to remove read/execution privileges for normal
users.
---------------------------------------------------------------------------

Contributors to w00giving '99: awr, jobe, Sangfroid, rfp, vacuum,
interrupt, dmess0r, marc, kitekoa, and K2

People who deserve hellos: nocarrier, minus, daveg, nny, dark
spyrit (and beavuh), and blakew

w00giving '99 advisories are being archived by
kitekoa at:
http://www.kitetoa.com/Pages/Textes/Les_Dossiers/Admins/Fest/\
w00giving99[1-3].htm.

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