Your message dated Mon, 11 Apr 2011 09:16:33 +0000
with message-id <[email protected]>
and subject line Bug#622220: Removed package(s) from unstable
has caused the Debian Bug report #112279,
regarding libpam-opie: Possible account exposure.
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
112279: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=112279
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: libpam-opie
Version: 0.21-7
Severity: important
Tags: security
The behaviour of the challenge/responce mechanism allows for remote
validation and discovery of valid usernames.
When a login is attempted with an invalid username, a pseudo-random
challenge is issued. After several attempts, this challenge varies
signifigantly from the normal challenges in that the sequence number
AND seed are widely varied, where for a valid user, they would not
unless the user reinitilized their OPIE key during the attack.
This indirectly leads to a possible means for an attacker to verify
the existance of a user account, and through brute force attacks
discover some or all of the user accounts on a system.
Workaround:
None at present short of disabling OPIE logins. In this case
the benefits of using OPIE probably outweigh this risk from this
rather small information leak. Site which use OPIE authentication are
encouraged to monitor for suspicious login attempts which could indicate an
attempt to probe the system for valid usernames.
-- System Information
Debian Release: testing/unstable
Architecture: i386
Kernel: Linux marian 2.4.5-ac13 #9 Fri Jul 20 21:12:07 EDT 2001 i586
Locale: LANG=C, LC_CTYPE=C
Versions of packages libpam-opie depends on:
ii libc6 2.2.4-1 GNU C Library: Shared libraries an
ii libpam0g 0.72-31 Pluggable Authentication Modules l
--- End Message ---
--- Begin Message ---
Version: 0.21-8+rm
Dear submitter,
as the package libpam-opie has just been removed from the Debian archive
unstable we hereby close the associated bug reports. We are sorry
that we couldn't deal with your issue properly.
For details on the removal, please see http://bugs.debian.org/622220
The version of this package that was in Debian prior to this removal
can still be found using http://snapshot.debian.org/.
This message was generated automatically; if you believe that there is
a problem with it please contact the archive administrators by mailing
[email protected].
Debian distribution maintenance software
pp.
Alexander Reichle-Schmehl (the ftpmaster behind the curtain)
--- End Message ---
