Bug 16172 - LPRng has setuid/setgid, group membership issues.
Summary: LPRng has setuid/setgid, group membership issues.
Status: CLOSED RAWHIDE
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: LPRng   
(Show other bugs)
Version: 7.0
Hardware: All
OS: Linux
high
medium
Target Milestone: ---
Assignee: Crutcher Dunnavant
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Blocks:
TreeView+ depends on / blocked
 
Reported: 2000-08-14 17:00 UTC by Crutcher Dunnavant
Modified: 2008-05-01 15:37 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2000-08-14 19:54:25 UTC
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Description Crutcher Dunnavant 2000-08-14 17:00:36 UTC
Well, this should be fun to fix. It seems we have setuid/setgid, group
membership issues for LPRNG, and this is bad (though not in an exploits
way). Here is the email that pointed it out:

---
Bill,
      In porting the Pinstripe srpms to Linuxppc I discovered what I
think is a flaw in the
LPRng spec. On my machine running the Pinstripe rpms I find that the
stock LPRng
spec results in users being unable to print files from their own
directories when their
directories have restricted permissions like drwx------. In such cases I
get
an error message that the lpr can't open the file to be printed. What I
noticed was that
the LPRng.spec had...
  
%attr(4755,lp,lp) %{_bindir}/lpq
%attr(4755,lp,lp) %{_bindir}/lprm
%attr(4755,lp.lp) %{_bindir}/lpr
%attr(4755,lp,lp) %{_bindir}/lpstat
  
in the file list. Shouldn't this be....
  
%attr(4755,root,lp) %{_bindir}/lpq
%attr(4755,root,lp) %{_bindir}/lprm
%attr(4755,root,lp) %{_bindir}/lpr
%attr(4755,root,lp) %{_bindir}/lpstat
  
On my machine that change solves the problem and matches what was in the
lpr
spec from RedHat 6.2....
  
%attr(6555,root,lp) /usr/bin/lpq
%attr(6555,root,lp) /usr/bin/lpr
%attr(6555,root,lp) /usr/bin/lprm

Comment 1 Crutcher Dunnavant 2000-08-14 19:54:23 UTC
I think that this, and many other issues are handled by removing the sticky bits
from the client programs. So that's what I did.

I also removed the bit from the lpc control program.

Comment 2 Crutcher Dunnavant 2000-08-14 19:55:02 UTC
I think this is all closed up now.


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