Date: Mon, 25 Nov 2002 15:44:14 +0100
From: (Trustix Secure Linux Advisor) <tsl@trustix.com>
To: bugtraq@securityfocus.com
Subject: TSLSA-2002-0080 - samba
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Trustix Secure Linux Security Advisory #2002-0080
Package name: samba
Summary: Remote hole
Date: 2002-11-21
Affected versions: TSL 1.5
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Package description:
Samba provides an SMB server which can be used to provide network
services to SMB (sometimes called "Lan Manager") clients, including
various versions of MS Windows, OS/2, and other Linux machines. Samba
uses NetBIOS over TCP/IP (NetBT) protocols and does NOT need NetBEUI
(Microsoft Raw NetBIOS frame) protocol.
Problem description:
From the Samba 2.2.7 release notes:
There was a bug in the length checking for encrypted password change
requests from clients. A client could potentially send an encrypted
password, which, when decrypted with the old hashed password could be
used as a buffer overrun attack on the stack of smbd. The attach would
have to be crafted such that converting a DOS codepage string to little
endian UCS2 unicode would translate into an executable block of code.
All versions of Samba between 2.2.2 to 2.2.6 inclusive are vulnerable
to this problem. This version of Samba 2.2.7 contains a fix for this
problem.
Action:
We recommend that all systems with this package installed be upgraded.
Please note that if you do not need the functionality provided by this
package, you may want to remove it from your system.
Location:
All TSL updates are available from
<URI:http://www.trustix.net/pub/Trustix/updates/>;
<URI:ftp://ftp.trustix.net/pub/Trustix/updates/>;
About Trustix Secure Linux:
Trustix Secure Linux is a small Linux distribution for servers. With
focus on security and stability, the system is painlessly kept safe
and up to date from day one using swup, the automated software updater.
Automatic updates:
Users of the SWUP tool can enjoy having updates automatically
installed using 'swup --upgrade'.
Get SWUP from:
<URI:ftp://ftp.trustix.net/pub/Trustix/software/swup/>;
Public testing:
These packages have been available for public testing for some time.
If you want to contribute by testing the various packages in the
testing tree, please feel free to share your findings on the
tsl-discuss mailinglist.
The testing tree is located at
<URI:http://www.trustix.net/pub/Trustix/testing/>;
<URI:ftp://ftp.trustix.net/pub/Trustix/testing/>;
Questions?
Check out our mailing lists:
<URI:http://www.trustix.net/support/>;
Verification:
This advisory along with all TSL packages are signed with the TSL sign key.
This key is available from:
<URI:http://www.trustix.net/TSL-GPG-KEY>;
The advisory itself is available from the errata pages at
<URI:http://www.trustix.net/errata/trustix-1.5/>;
or directly at
<URI:http://www.trustix.net/errata/misc/2002/TSL-2002-0080-samba.asc.txt>;
MD5sums of the packages:
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96e5c4eedf3d3e638954f3649acd4759 ./1.5/RPMS/samba-2.2.7-2tr.i586.rpm
1004f7c7d856db6933dd42cb3e1fdbcd ./1.5/RPMS/samba-client-2.2.7-2tr.i586.rpm
3bfce6f3114c2531e697749a7cb20b60 ./1.5/RPMS/samba-common-2.2.7-2tr.i586.rpm
8b072b4cd0e60ebd0b1e1ed60e2a178c ./1.5/SRPMS/samba-2.2.7-2tr.src.rpm
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Trustix Security Team
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