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Bug 105858 - Gdm has issues with names containing shell metacharacters
Gdm has issues with names containing shell metacharacters
Product: Fedora
Classification: Fedora
Component: gdm (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Havoc Pennington
Mike McLean
: Triaged
Depends On:
Blocks: CambridgeBlocker
  Show dependency treegraph
Reported: 2003-09-28 10:22 EDT by Alan Cox
Modified: 2007-11-30 17:10 EST (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2003-10-21 15:51:01 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Alan Cox 2003-09-28 10:22:22 EDT
In paticular the gdm PreSession script seems to be short quoting on DISPLAY and
USER in various places that matter.
Comment 1 George Lebl 2003-09-29 17:21:33 EDT
Fixing in CVS.  Note that xdm as installed on my box (RH9) has the same issues
when it calls sessreg, I assume kdm has the same as well.  However is this truly

It would also be nice to know of any other issues such as this in GDM, is this
the only one found?
Comment 2 Alan Cox 2003-09-29 17:35:26 EDT
I've not done any kind of code review. I don't think its exploitable - you have
to have a valid username containing such characters. 
Comment 3 Havoc Pennington 2003-10-21 15:51:01 EDT
We should have the fix in latest gdm packages

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