KDE May Disclose SMB Passwords to Remote Users Via URLs
|
|
SecurityTracker Alert ID: 1012471
|
|
SecurityTracker URL: http://securitytracker.com/id?1012471
|
|
CVE Reference: CAN-2004-1171
(Links to External Site)
|
Updated: Dec 10 2004
|
Original Entry Date: Dec 9 2004
|
Impact: Disclosure of authentication information
|
Fix Available: Yes
Exploit Included: Yes
Vendor Confirmed: Yes
|
Version(s): 3.2.x, 3.3.0, 3.3.1, and 3.3.2
|
Description: A vulnerability was reported in KDE. Passwords may be disclosed via URLs.
The vendor reported that when a user creates a link to a remote file using various KDE applications, the resulting link may include
authentication credentials for the remote system. This may include Samba passwords for files located on SMB servers.
The password
for SMB protocol URLs is always addded in plaintext to the URL in the link reference file ('*.desktop' file).
Daniel Fabian is
credited with reporting this flaw.
The vendor's original advisory is available at:
http://www.kde.org/info/security/advisory-20041209-1.txt
The
original SEC Consult advisory is available at:
http://www.sec-consult.com/index.php?id=118
|
Impact: A user may disclose passwords for SMB shares as part of a URL.
|
Solution: The vendor has issued patches for KDE 3.2.3, 3.3.1, and 3.3.2.
Patches for KDE 3.3.1 are available from
ftp://ftp.kde.org/pub/kde/security_patches
:
501852d12f82aebe7eb73ec5d96c9e6d post-3.3.1-kdebase-smb.diff
5b9c1738f2de3f00533e376eb64c7137 post-3.3.1-kdelibs-khtml.diff
f287c900c637af2452c7a554f2df166f post-3.3.1-kdelibs-kio.diff
Patch for KDE 3.3.2 is available from
ftp://ftp.kde.org/pub/kde/security_patches :
d3658e90acec6ff140463ed2fd0e7736 post-3.3.2-kdelibs-kio.diff
Patches for KDE 3.2.3 are available from
ftp://ftp.kde.org/pub/kde/security_patches :
d080d9acf4d2abc5f91ccec8fc463568
post-3.2.3-kdebase-smb.diff
d79d1717b4bc0b3891bacaaf37deade0 post-3.2.3-kdelibs-khtml.diff
94e76ec98cd58ce27cad8f886d241986
post-3.2.3-kdelibs-kio.diff
|
Vendor URL: www.kde.org/info/security/advisory-20041209-1.txt (Links to External Site)
|
Cause: Access control error
|
Underlying OS: Linux (Any), UNIX (Any)
|
Reported By: Dirk Mueller <mueller@kde.org>
|
Message History:
This archive entry has one or more follow-up message(s) listed below.
|
Source Message Contents
|
Date: Thu, 9 Dec 2004 15:07:19 +0100
From: Dirk Mueller <mueller@kde.org>
Subject: KDE Security Advisory: plain text password exposure
|
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
KDE Security Advisory: plain text password exposure
Original Release Date: 2004-12-09
URL: http://www.kde.org/info/security/advisory-20041209-1.txt
0. References
http://www.sec-consult.com/index.php?id=118
1. Systems affected:
All KDE 3.2.x releases, KDE 3.3.0, KDE 3.3.1 and KDE 3.3.2.
2. Overview:
Daniel Fabian notified the KDE security team about a possible
privacy issue in KDE. When creating a link to a remote file
from various applications including Konqueror, the resulting
URL may contain the authentication credentials used to access
that remote resource. This includes, but is not limited to
browsing SMB ("Samba") shares. Further investigation revealed
unnecessary exposure of authentication credentials by the
SMB ("Samba") protocol handler.
The link reference file, which is a file with the extension
".desktop", is a plain text configuration file that is created
with default access permissions, depending on the users' umask
this could include world read permission. Usually the URL saved
in this .desktop file only contains the password if the user
manually entered it this way. The SMB protocol handler however
unnecessarily exposes authentication credentials by always
including this information in the URL that it generates.
The KDE team provides patches which will unconditionally
remove the password from the authentication credentials
before creating the link reference file and that fix the SMB
protocol handler to not unnecessarily include passwords
in URLs Authentication credentials can then be stored in
KWallet instead.
3. Impact:
A user may inadvertly expose passwords provided for SMB shares
or other passwords that were entered as part of an URL.
4. Solution:
Users should verify that links to remote files do not contain
password information by right-clicking the link and selecting
the "Properties" option and then selecting the "URL" tab.
The KDE 3.3.2 release contains most fixes already, therefore
the patch set to apply to KDE 3.3.2 is less than for other
KDE versions.
Source code patches have been made available which fix these
vulnerabilities. Contact your OS vendor / binary package provider
for information about how to obtain updated binary packages.
5. Patch:
Patches for KDE 3.3.1 are available from
ftp://ftp.kde.org/pub/kde/security_patches :
501852d12f82aebe7eb73ec5d96c9e6d post-3.3.1-kdebase-smb.diff
5b9c1738f2de3f00533e376eb64c7137 post-3.3.1-kdelibs-khtml.diff
f287c900c637af2452c7a554f2df166f post-3.3.1-kdelibs-kio.diff
Patch for KDE 3.3.2 is available from
ftp://ftp.kde.org/pub/kde/security_patches :
d3658e90acec6ff140463ed2fd0e7736 post-3.3.2-kdelibs-kio.diff
Patches for KDE 3.2.3 are available from
ftp://ftp.kde.org/pub/kde/security_patches :
d080d9acf4d2abc5f91ccec8fc463568 post-3.2.3-kdebase-smb.diff
d79d1717b4bc0b3891bacaaf37deade0 post-3.2.3-kdelibs-khtml.diff
94e76ec98cd58ce27cad8f886d241986 post-3.2.3-kdelibs-kio.diff
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.5 (GNU/Linux)
iD8DBQFBt618vsXr+iuy1UoRArYpAJ9WwYla1w0zwLZ5h5aC+loKcsYl2wCcCx0y
VXT0cntKNdpheNgZcKGYnug=
=bTjQ
-----END PGP SIGNATURE-----
|
|
