Gentoo Websites Logo
Go to: Gentoo Home Documentation Forums Lists Bugs Planet Store Wiki Get Gentoo!
Bug 83605 - gnome-base/gdm GDM issues
Summary: gnome-base/gdm GDM issues
Status: RESOLVED INVALID
Alias: None
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All All
: High minor (vote)
Assignee: Gentoo Security
URL: http://bugzilla.gnome.org/show_bug.cg...
Whiteboard: A4 [upstream+] jaervosz
Keywords:
Depends on:
Blocks:
 
Reported: 2005-02-28 13:48 UTC by Sune Kloppenborg Jeppesen (RETIRED)
Modified: 2005-06-20 05:17 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


Attachments

Note You need to log in before you can comment on or make changes to this bug.
Description Sune Kloppenborg Jeppesen (RETIRED) gentoo-dev 2005-02-28 13:48:46 UTC
- Additional Comment #5 From Thomas Biege 2004-06-09 14:52 MST [reply] 

checked verify-crypt.c 
 
Two bugs found. 
1.)     password verification done before checking for closed accounts, login 
        restrictions or allowed remote logins for root 
        result: even invalid logins can be brute-forced 
        note, syslog messages are emitted for these cases 
2.)     "anti-brute-force-delay" missing for invalid logins 
        note, syslog messages are emitted for these case 
 
Nevertheless the code is in very good style. 
 
Stay tuned... 
 

- Additional Comment #6 From Thomas Biege 2004-06-14 13:45 MST [reply] 

checked verify-shadow.c 
 
same bug as described in comment #5. 
 
Another (nitpicker) issue is that the shadow passwd file can be closed 
earlier. In this case it is harmless. 
 

- Additional Comment #7 From Thomas Biege 2004-06-17 16:49 MST [reply] 

verify-pam.c: like comment #5 
code is much more complex and till now I didn't dig very deep. 
It includes various hacks and workarounds. (looks like handling PAM isn't
easy) 
 
Another problem in verity-{crypt,shadow}.c is that for non-existing users 
strcmp() and crypt() isn't called. Therefore there is a time-difference 
between authenticating existing and non-existing users that can be measured.
Comment 1 Dan Margolis (RETIRED) gentoo-dev 2005-03-07 18:02:44 UTC
From where is this copied? The GDM bugzilla? Alternatively, have the GDM developers been notified? These are almost certainly not worth the trouble of introducing a Gentoo-specific patch, IMO. 
Comment 2 Dan Margolis (RETIRED) gentoo-dev 2005-03-08 23:08:35 UTC
Oh, sorry. It says in the subject line. Duh. Anywho, upstream?
Comment 3 Sune Kloppenborg Jeppesen (RETIRED) gentoo-dev 2005-04-23 07:49:37 UTC
Thomas Biege contacted again.

CC'ing Mike.
Comment 4 Sune Kloppenborg Jeppesen (RETIRED) gentoo-dev 2005-04-27 08:18:56 UTC
Upstream bug filed.
Comment 5 Sune Kloppenborg Jeppesen (RETIRED) gentoo-dev 2005-05-08 01:06:00 UTC
Mike any news on this one?
Comment 6 Thierry Carrez (RETIRED) gentoo-dev 2005-05-20 10:20:24 UTC
GNOME bug is public. Waiting for progress there...
Comment 7 Thierry Carrez (RETIRED) gentoo-dev 2005-06-08 06:14:11 UTC
No progress on the Gnome bug
Comment 8 Thierry Carrez (RETIRED) gentoo-dev 2005-06-20 05:11:23 UTC
I propose that we consider this shallow... and close the bug.
Comment 9 Sune Kloppenborg Jeppesen (RETIRED) gentoo-dev 2005-06-20 05:17:18 UTC
Koon says shallow (and I agree) -> Closing