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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.
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-----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>
<suse-security-faq@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 <security@suse.de>
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This archive was generated by hypermail 2.1.0
: Mon Jun 04 2001 - 18:25:14 PDT
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