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Security update for telnet


(Last modified: 10JUN2005)

solutions Security update for telnet SuSE Linux Maintenance Web (d186f2c228e08c5865db6bb658b39807)

Applies to

Package: telnet
Product(s): SUSE CORE 9 for x86
SUSE CORE 9 for Itanium Processor Family
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 Desktop 1.0
SUSE LINUX Retail Solution 8
SuSE Linux School Server for i386
SuSE Linux Standard Server 8
SuSE Linux Enterprise Server 8 for x86
SuSE Linux Enterprise Server 8 for IPF
SuSE Linux Enterprise Server 8 for IBM iSeries and IBM pSeries
SuSE Linux Enterprise Server 8 for IBM S/390 and IBM zSeries
SuSE Linux Enterprise Server 8 for IBM zSeries
SuSE Linux Enterprise Server 8 for AMD64
Novell Linux Desktop 9 for x86
Novell Linux Desktop 9 for x86_64
Open Enterprise Server
SuSE Linux Openexchange Server 4
Patch: patch-10238
Release: 20050610
Obsoletes: none


Everyone should update.


Problem description The telnet client protocol can be abused by a malicious server to read the environment of the client site. The information can be used as preparation for further attacks. This bug can also be exploited by using the telnet:// URL on a web-site and letting the web-browser fork a telnet client. This bug was reported by iDEFENSE [IDEF0865].
Note that this patch changes the behaviour of the telnet client regarding the rule of exported environment variables. Please consult the man page for further details.


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 telnet.rpm

links to download packages

Download Source Packages

Download the source code of the patches for maintained products.


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