Security update for OpenSSH

Knowledgebase

(Last modified: 23OCT2007)

solutions Security update for OpenSSH SuSE Linux Maintenance Web (6b2d209e0f58a6056558133b78463be9)

Applies to

Package: openssh
openssh-askpass
Product(s): SUSE CORE 9 for x86
SUSE CORE 9 for Itanium Processor Family
SUSE CORE 9 for IBM POWER
SUSE CORE 9 for IBM S/390 31bit
SUSE CORE 9 for IBM zSeries 64bit
SUSE CORE 9 for AMD64 and Intel EM64T
SUSE Linux Enterprise Desktop 10 SP1 for x86
SUSE Linux Enterprise Desktop 10 SP1 for AMD64 and Intel EM64T
SUSE Linux Enterprise Server 10 SP1 for x86
SUSE Linux Enterprise Server 10 SP1 for IPF
SUSE Linux Enterprise Server 10 SP1 for IBM POWER
SUSE Linux Enterprise Server 10 SP1 for IBM zSeries 64bit
SUSE Linux Enterprise Server 10 SP1 for AMD64 and Intel EM64T
Novell Linux POS 9
Novell Linux Desktop 9 for x86
Novell Linux Desktop 9 for x86_64
Open Enterprise Server
Patch: patch-11931Zypp-Patch-Number: 4580
Release: 20071023
Obsoletes: none

Indications

Everyone should update.

Contraindications

None.

Problem description

This update fixes a bug in ssh's cookie handling code. It does not properly handle the situation when an untrusted cookie cannot be created and uses a trusted X11 cookie instead. This allows attackers to violate the intended policy and gain privileges by causing an X client to be treated as trusted. (CVE-2007-4752)
Additionally this update fixes a bug introduced with the last security update for openssh. When the SSH daemon wrote to stderr (for instance, to warn about the presence of a deprecated option like PAMAuthenticationViaKbdInt in its configuration file), SIGALRM was blocked for SSH sessions. This resulted in problems with processes which rely on SIGALRM, such as ntpdate.

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 -Fvh openssh.rpm openssh-askpass.rpm

links to download packages

Download Source Packages

Download the source code of the patches for maintained products.

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