Date: Tue, 11 Jul 2000 15:54:23 +0200 (CEST)
From: Thomas Biege thomas@suse.de
To: suse-security-announce@suse.com
Subject: [suse-security-announce] SuSE Security Announcement:
dhclient
—–BEGIN PGP SIGNED MESSAGE—–
SuSE Security Announcement
Package: dhclient < 2.0
Date: Tue Jul 11 15:12:22 CEST 2000
Affected SuSE versions: 6.1-6.4
Vulnerability Type: remote root compromise
SuSE default package: no
Other affected systems: all unix systems using this package
A security hole was discovered in the package mentioned above.
Please update it as soon as possible or disable the service if you
are using this software on your SuSE Linux installation(s).
Other Linux distributions or operating systems might be affected
as well, please contact your vendor for information about this
issue.
Please note that we provide this information on an “as-is” basis
only. There is no warranty whatsoever and no liability for any
direct, indirect or incidental damage arising from this information
or the installation of the update package.
1. Problem Description
The client side program of the ISC DHCP package, dhclient, does
not do quoting of server messages before passing them to
/sbin/dhclient-script. This script is executed with root
privileges.
2. Impact
Dhclient could be tricked by a rogue DHCP server to execute
commands as user root. This leads to a remote root compromise of
the system using dhclient.
3. Solution
Update the package from our FTP server.
Please verify these md5 checksums of the updates before
installing: (For SuSE 6.0, please use the 6.1 updates)
AXP:
262677203e3b1dada23e65ae60d08264
ftp://ftp.suse.com/pub/suse/axp/update/6.3/n1/dhclient-2.0pl2-3.alpha.rpm
910097426b5771c82abf8f323086b5ba
ftp://ftp.suse.com/pub/suse/axp/update/6.4/n1/dhclient-2.0pl2-3.alpha.rpm
i386:
300a7c8220d3b9f65a2aef3ed4fdb7b3
ftp://ftp.suse.com/pub/suse/i386/update/6.1/n1/dhclient-2.0pl2-3.i386.rpm
7be68cd54e7fd3766b7eb36fc2e854c5
ftp://ftp.suse.com/pub/suse/i386/update/6.2/n1/dhclient-2.0pl2-3.i386.rpm
44fad0cee0cb53627ed7c507077d5d2b
ftp://ftp.suse.com/pub/suse/i386/update/6.3/n1/dhclient-2.0pl2-3.i386.rpm
320d4414841e29bd08584fc5d8592d99
ftp://ftp.suse.com/pub/suse/i386/update/6.4/n1/dhclient-2.0pl2-3.i386.rpm
PPC:
a8a19501e4821ab6c7b375972eb1e5ce
ftp://ftp.suse.com/pub/suse/ppc/update/6.3/n1/dhclient-2.0pl2-3.ppc.rpm
b4ea052ba25b10586cc14f6fea5b2d9f
ftp://ftp.suse.com/pub/suse/ppc/update/6.4/n1/dhclient-2.0pl2-3.ppc.rpm
You can find updates on our ftp-Server:
ftp://ftp.suse.com/pub/suse/i386/update
for Intel processors
ftp://ftp.suse.com/pub/suse/axp/update
for Alpha processors
or try the following web pages for a list of mirrors:
http://www.suse.de/ftp.html
http://www.suse.com/ftp_new.html
Our webpage for patches:
http://www.suse.de/patches/index.html
Our webpage for security announcements:
http://www.suse.de/security
If you want to report vulnerabilities, please contact security@suse.de
SuSE has got two free security mailing list services to which
any interested party may subscribe:
suse-security@suse.com - moderated and for general/linux/SuSE security discussions. All SuSE security announcements are sent to this list. suse-security-announce@suse.com - SuSE's announce-only mailing list. Only SuSE's security annoucements are sent to this list.
To subscribe to the list, send a message to:
suse-security-subscribe@suse.com
To remove your address from the list, send a message to:
suse-security-unsubscribe@suse.com
Send mail to the following for info and FAQ for this list:
suse-security-info@suse.com
This information is provided freely to everyone interested and
may be redistributed provided that it is not altered in any
way.
Type Bits/KeyID Date User ID pub 2048/3D25D3D9 1999/03/06 SuSE Security Team - ------BEGIN PGP PUBLIC KEY BLOCK----- Version: 2.6.3i mQENAzbhLQQAAAEIAKAkXHe0lWRBXLpn38hMHy03F0I4Sszmoc8aaKJrhfhyMlOA BqvklPLE2f9UrI4Xc860gH79ZREwAgPt0pi6+SleNFLNcNFAuuHMLQOOsaMFatbz JR9i4m/lf6q929YROu5zB48rBAlcfTm+IBbijaEdnqpwGib45wE/Cfy6FAttBHQh 1Kp+r/jPbf1mYAvljUfHKuvbg8t2EIQz/5yGp+n5trn9pElfQO2cRBq8LFpf1l+U P7EKjFmlOq+Gs/fF98/dP3DfniSd78LQPq5vp8RL8nr/o2i7jkAQ33m4f1wOBWd+ cZovrKXYlXiR+Bf7m2hpZo+/sAzhd7LmAD0l09kABRG0JVN1U0UgU2VjdXJpdHkg VGVhbSA8c2VjdXJpdHlAc3VzZS5kZT6JARUDBRA24S1H5Fiyh7HKPEUBAVcOB/9b yHYji1/+4Xc2GhvXK0FSJN0MGgeXgW47yxDL7gmR4mNgjlIOUHZj0PEpVjWepOJ7 tQS3L9oP6cpj1Fj/XxuLbkp5VCQ61hpt54coQAvYrnT9rtWEGN+xmwejT1WmYmDJ xG+EGBXKr+XP69oIUl1E2JO3rXeklulgjqRKos4cdXKgyjWZ7CP9V9daRXDtje63 Om8gwSdU/nCvhdRIWp/Vwbf7Ia8iZr9OJ5YuQl0DBG4qmGDDrvImgPAFkYFzwlqo choXFQ9y0YVCV41DnR+GYhwl2qBd81T8aXhihEGPIgaw3g8gd8B5o6mPVgl+nJqI BkEYGBusiag2pS6qwznZiQEVAwUQNuEtBHey5gA9JdPZAQFtOAf+KVh939b0J94u v/kpg4xs1LthlhquhbHcKNoVTNspugiC3qMPyvSX4XcBr2PC0cVkS4Z9PY9iCfT+ x9WM96g39dAF+le2CCx7XISk9XXJ4ApEy5g4AuK7NYgAJd39PPbERgWnxjxir9g0 Ix30dS30bW39D+3NPU5Ho9TD/B7UDFvYT5AWHl3MGwo3a1RhTs6sfgL7yQ3U+mvq MkTExZb5mfN1FeaYKMopoI4VpzNVeGxQWIz67VjJHVyUlF20ekOz4kWVgsxkc8G2 saqZd6yv2EwqYTi8BDAduweP33KrQc4KDDommQNDOXxaKOeCoESIdM4p7Esdjq1o L0oixF12Cg== =pIeS - ------END PGP PUBLIC KEY BLOCK----- -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv iQEVAwUBOWsm93ey5gA9JdPZAQHseQf9EfascZdwdTCEgeCVELHPYjERcwQeXcb8 nisoW6eXveVVR1FaVpuX/gUeh5u4WNfyBNMuYQV1p7+0gis5f59vFJ7IxFWV/TLm h24/bx7TjufPCCFW16Ye1GWrGb5TIVdC6ORYV4A4BY74sByiKazlFbtT9qAtcAjD kqmbdIFwc1b0rYIREr1WGdwr1tfNVsRUJgKdyAco+miKXGjwM8rGw415A9o1zsrI OjC3sNeDDQi64uEFyODsr/LZpt06HFu0cNif4RbPi2LEd4UTfE2CNj5WGHq7NeEM XFjQ9+fp4/m4mngAsM7/RrlHoNQ09lOdmF7Dj8jWJS4r0c2pKuDzaQ== =ksUb -----END PGP SIGNATURE-----