[RHSA-2001:099-09] New telnet packages available to fix buffer overflow vulnerabilities

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                   Red Hat, Inc. Red Hat Security Advisory

Synopsis:          New telnet packages available to fix buffer overflow vulnerabilities
Advisory ID:       RHSA-2001:099-09
Issue date:        2001-08-02
Updated on:        2002-02-07
Product:           Red Hat Linux
Keywords:          telnet buffer overflow
Cross references:  
Obsoletes:         
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1. Topic:

New telnet, telnet-server packages are available for Red Hat Linux 5.2, 
6.2, 7.0 and 7.1. 
These packages fix a problem where buffer overflows can provide root 
access to local users.

It is recommended that all users update to the fixed packages.

[2002-02-06] New packages are available for Red Hat Linux 7.0 and 7.1.
These fix issues when upgrading from the errata telnet packages released
for previous releases. No code changes are involved.

2. Relevant releases/architectures:

Red Hat Linux 5.2 - alpha, i386, sparc

Red Hat Linux 6.2 - alpha, i386, sparc

Red Hat Linux 7.0 - alpha, i386

Red Hat Linux 7.1 - alpha, i386, ia64

3. Problem description:



4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade.  Only those
RPMs which are currently installed will be updated.  Those RPMs which are
not installed but included in the list will not be updated.  Note that you
can also use wildcards (*.rpm) if your current directory *only* contains the
desired RPMs.

Please note that this update is also available via Red Hat Network.  Many
people find this an easier way to apply updates.  To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info):

50335 - telnetd segfaults during session negotiation

6. RPMs required:

Red Hat Linux 5.2:

SRPMS:
ftp://updates.redhat.com/5.2/en/os/SRPMS/telnet-0.17.5x-18.src.rpm

alpha:
ftp://updates.redhat.com/5.2/en/os/alpha/telnet-0.17.5x-18.alpha.rpm

i386:
ftp://updates.redhat.com/5.2/en/os/i386/telnet-0.17.5x-18.i386.rpm

sparc:
ftp://updates.redhat.com/5.2/en/os/sparc/telnet-0.17.5x-18.sparc.rpm

Red Hat Linux 6.2:

SRPMS:
ftp://updates.redhat.com/6.2/en/os/SRPMS/telnet-0.17.6x-18.src.rpm

alpha:
ftp://updates.redhat.com/6.2/en/os/alpha/telnet-0.17.6x-18.alpha.rpm
ftp://updates.redhat.com/6.2/en/os/alpha/telnet-server-0.17.6x-18.alpha.rpm

i386:
ftp://updates.redhat.com/6.2/en/os/i386/telnet-0.17.6x-18.i386.rpm
ftp://updates.redhat.com/6.2/en/os/i386/telnet-server-0.17.6x-18.i386.rpm

sparc:
ftp://updates.redhat.com/6.2/en/os/sparc/telnet-0.17.6x-18.sparc.rpm
ftp://updates.redhat.com/6.2/en/os/sparc/telnet-server-0.17.6x-18.sparc.rpm

Red Hat Linux 7.0:

SRPMS:
ftp://updates.redhat.com/7.0/en/os/SRPMS/telnet-0.17-18.1.src.rpm

alpha:
ftp://updates.redhat.com/7.0/en/os/alpha/telnet-0.17-18.1.alpha.rpm
ftp://updates.redhat.com/7.0/en/os/alpha/telnet-server-0.17-18.1.alpha.rpm

i386:
ftp://updates.redhat.com/7.0/en/os/i386/telnet-0.17-18.1.i386.rpm
ftp://updates.redhat.com/7.0/en/os/i386/telnet-server-0.17-18.1.i386.rpm

Red Hat Linux 7.1:

SRPMS:
ftp://updates.redhat.com/7.1/en/os/SRPMS/telnet-0.17-18.1.src.rpm

alpha:
ftp://updates.redhat.com/7.1/en/os/alpha/telnet-0.17-18.1.alpha.rpm
ftp://updates.redhat.com/7.1/en/os/alpha/telnet-server-0.17-18.1.alpha.rpm

i386:
ftp://updates.redhat.com/7.1/en/os/i386/telnet-0.17-18.1.i386.rpm
ftp://updates.redhat.com/7.1/en/os/i386/telnet-server-0.17-18.1.i386.rpm

ia64:
ftp://updates.redhat.com/7.1/en/os/ia64/telnet-0.17-18.1.ia64.rpm
ftp://updates.redhat.com/7.1/en/os/ia64/telnet-server-0.17-18.1.ia64.rpm



7. Verification:

MD5 sum                          Package Name
--------------------------------------------------------------------------
b3e43fdd61e66fdf92b1c12dfbc25b1b 5.2/en/os/SRPMS/telnet-0.17.5x-18.src.rpm
23b34e59f5abc3d6f336f4bcaf2cfc94 5.2/en/os/alpha/telnet-0.17.5x-18.alpha.rpm
c075640ce8b75d1428c67c71cb08916e 5.2/en/os/i386/telnet-0.17.5x-18.i386.rpm
c13e1c86ef08363ed317550e2e87429f 5.2/en/os/sparc/telnet-0.17.5x-18.sparc.rpm
65a4919d0145366c84b2b758747153f5 6.2/en/os/SRPMS/telnet-0.17.6x-18.src.rpm
adb09756c21b4b920c47896b10263a52 6.2/en/os/alpha/telnet-0.17.6x-18.alpha.rpm
fc7d07585a065fbce46a35374a65c036 6.2/en/os/alpha/telnet-server-0.17.6x-18.alpha.rpm
cda5430e3ea6d337fbdb5d7284bbe404 6.2/en/os/i386/telnet-0.17.6x-18.i386.rpm
3222d7d4cc431ca93af62b491330d17c 6.2/en/os/i386/telnet-server-0.17.6x-18.i386.rpm
f4bfa409ecf232b5a16dee770a1d42ea 6.2/en/os/sparc/telnet-0.17.6x-18.sparc.rpm
4a78871d19f2cfebb22c29e1dd520f36 6.2/en/os/sparc/telnet-server-0.17.6x-18.sparc.rpm
e0e583cb2873cce60e4cf4a1496446fd 7.0/en/os/SRPMS/telnet-0.17-18.1.src.rpm
7da0645ed2f44704a5401023c8ddf19c 7.0/en/os/alpha/telnet-0.17-18.1.alpha.rpm
f2c626385c38be9c2c308f0fb94942b6 7.0/en/os/alpha/telnet-server-0.17-18.1.alpha.rpm
d4c6ea58c27504771887ada7f89646dd 7.0/en/os/i386/telnet-0.17-18.1.i386.rpm
3165c07852274f4303c1acebde8ded06 7.0/en/os/i386/telnet-server-0.17-18.1.i386.rpm
e0e583cb2873cce60e4cf4a1496446fd 7.1/en/os/SRPMS/telnet-0.17-18.1.src.rpm
7da0645ed2f44704a5401023c8ddf19c 7.1/en/os/alpha/telnet-0.17-18.1.alpha.rpm
f2c626385c38be9c2c308f0fb94942b6 7.1/en/os/alpha/telnet-server-0.17-18.1.alpha.rpm
d4c6ea58c27504771887ada7f89646dd 7.1/en/os/i386/telnet-0.17-18.1.i386.rpm
3165c07852274f4303c1acebde8ded06 7.1/en/os/i386/telnet-server-0.17-18.1.i386.rpm
c1739ef931e039a8cdec3911b568b1f0 7.1/en/os/ia64/telnet-0.17-18.1.ia64.rpm
291ca1f0fdbcfeab7c889e3bf28ecf14 7.1/en/os/ia64/telnet-server-0.17-18.1.ia64.rpm
 

These packages are GPG signed by Red Hat, Inc. for security.  Our key
is available at:
    http://www.redhat.com/about/contact/pgpkey.html

You can verify each package with the following command:
    rpm --checksig  <filename>

If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
    rpm --checksig --nogpg <filename>

8. References:




Copyright(c) 2000, 2001 Red Hat, Inc.





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