SuSE Security Announcement Package: pam_smb Date: Wednesday, September 13th, 2000 18:00 MEST Affected SuSE versions: 6.2, 6.3, 6.4, 7.0 Vulnerability Type: remote root compromise Severity (1-10): 8 SuSE default package: no Other affected systems: Linux systems using the pam_smb module Content of this advisory: 1) security vulnerability resolved: pam_smb problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds 3) standard appendix (further information)
1) problem description, brief discussion, solution, upgrade
pam_smb is a package for a PAM (Pluggable Authentication
Modules) module that allows Linux/Unix user authentication using a
Windows NT server. Versions 1.1.5 and before contain a buffer
overflow that would allow a remote attacker to gain root access on
the target host, provided that the target host has the module
installed and configured. The bug was found by Shaun Clowes
and a new, fixed version of the package was promptly published by
Dave Airlie , the author of the pam_smb package.
SuSE distributions starting with SuSE-6.2 have the package
pam_smb installed if a network server installation configuration
has been selected or if the package has been selected manually. To
find out if the PAM module is installed, use the command `rpm -q
pam_smb’. If the module package is not installed, your host does
not exhibit the weakness. If you do not use the pam_smb module, you
can safely remove it using the command `rpm -e pam_smb’. SuSE
provides update packages with the latest version of pam_smb. If you
do use the module, you should upgrade the package as soon as
possible. There is currently no easy workaround for this problem
other than a package upgrade.
Download the update package from locations desribed below and
install the package with the command `rpm -Fhv file.rpm’. The
md5sum for each file is in the line below. You can verify the
integrity of the rpm files using the command `rpm –checksig
–nogpg file.rpm’, independently from the md5 signatures below.
i386 Intel Platform:
AXP Alpha Platform:
PPC Power PC Platform:
4a098a9308e93f207fa908f6febd7800 source rpm:
2) Pending vulnerabilities in SuSE Distributions and
Zope is contained in SuSE-7.0, i386 Intel and Sparc Platforms
only. A permission problem can lead to users given extra roles for
the duration of a single request by mutating the roles list as a
part of the request processing. Please update the package from our
ftp server using the commands as described above in section 1).
Considering the moderate severity of the problem and the noise
on the security mailing lists, we do not provide a seperate
security advisory to address this problem.
i386 Intel Platform:
The xchat IRC client may be tricked to execute arbitrary
commands if the user clicks on an URL. We will provide an update
package shortly. Please note that this kind of problem is rather
common and will be addressed soon in a future advisory for another
IMP is a webmail application to allow users to read and write
their email in a browser. Security problems have been found that
would allow attackers to run arbitrary commands on the webserver
running IMP. SuSE does not ship IMP or the Apache module “horde”
that IMP is based on.
3) standard appendix:
SuSE runs two security mailing lists to which any interested
party may subscribe:
– SuSE’s announce-only mailing list.
Only SuSE’s security annoucements are sent to this list. To
subscribe, send an email to [email protected].
SuSE’s security contact is [email protected].
– – —
- - | Roman Drahtmüller [email protected] // "Caution: Cape does | SuSE GmbH - Security Phone: // not enable user to fly." | Nürnberg, Germany +49-911-740530 // (Batman Costume warning label) | - -