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Security update for OpenSSH

Knowledgebase

(Last modified: 02JUL2002)


solutions Security update for OpenSSH SuSE Linux Maintenance Web (6383ca0a1fdf5e5142d85d74db95df0c)

Applies to

Product(s): SuSE Linux Database Server
SuSE Linux Admin-CD for Firewall
SuSE Linux Enterprise Server 7 for IBM zSeries
SuSE eMail Server III
SuSE Linux Enterprise Server 7 for PowerPC

SuSE Linux Enterprise Server 7 for IA32
SuSE Linux Enterprise Server 7 for IA64
SuSE Linux Enterprise Server 7 for S/390 and zSeries
SuSE eMail Server 3.1
SuSE Firewall Adminhost VPN
SuSE Linux Connectivity Server

Package: openssh
Release: 20020702
Obsoletes: none

Indications

Everyone should install this update.

Contraindications

None.

Problem description

SuSE Security has released two warnings and one SuSE Security announcement about security problems with possible remote root compromise in the OpenSSH package. After no specific information about the nature of the hole had been disclosed to SuSE Security and the security world in general for a few days, it is now clear that the default installation on all SuSE products was and is not vulnerable to the defect, provided the administrator did not actively change the ssh daemon configuration of the installation in question. In particular, the options PAMAuthenticationViaKbdInt have to be turned on to be vulnerable to the problem. Since the SuSE packages of OpenSSH do not have the compile-time enabled support for the one-time password system S/Key, the packages are not vulnerable to the ChallengeResponseAuthentication problem that can be fixed as officially announced (by disabling this option).
The package we offer contains a patch against the PAMAuthenticationViaKbdInt problem as officially announced by the openssh development team.

Solution

Please install the updates provided at the location noted below.

Installation notes

This update is provided as an RPM package that can easily be installed onto a running system by using this command:
rpm -Uvh openssh.rpm
After package installation, the administrator should restart the ssh daemon for the update package to become effective:
rcsshd restart
After the restart, the administrator should verify that secure shell login is still possible.

links to download packages

Download Source Packages

Download the source code of the patches for maintained products.


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