SuSE Information for VU#745371

Multiple vendor telnet daemons vulnerable to buffer overflow via crafted protocol options



Vendor Statement

The 7.x distribution update directories contain update packages for the recently discovered in.telnetd security problem (buffer overflow). While we are working for a solution for the 6.x distribution, the available packages are ready for use. It is recommended to apply these updates as soon as possible. The packages for the 7.1 distribution are called nkitserv.rpm, for 7.2 it's called telnet-server.rpm. The packages for the 6.x distributions prove to worksome because of a much older codebase and changed behaviour of parts of the glibc. We hope to be able to provide a suitable solution soon.
We recommend to disable the telnet service by commenting it out from the /etc/inetd.conf file (with a following "killall -HUP inetd" to make inetd re-read its config file) until an update package for your distribution is available. If you do not need the telnet server service, you should leave the service disabled even if you have applied an update package to your system.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Vendor References



SuSE has released a security announcement related to this vulnerability. It is located at

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