Users login

Create an account »

JOIN XATRIX

Users login

Home » Hacking News » MDKSA-2002:037-dhcp

MDKSA-2002:037-dhcp

by Nikola Strahija on May 30th, 2002 Fermin J. Serna discovered a problem in the dhcp server and client package from versions 3.0 to 3.0.1rc8, which are affected by a format string vulnerability that can be exploited remotely. By default, these versions of DHCP are compiled with the dns update feature enabled, which allows DHCP to update DNS records. The code that logs this update has an exploitable format string vulnerability; the update message can contain data provided by the attacker, such as a hostname. A successful exploitation could give the attacker elevated privileges equivalent to the user running the DHCP daemon, which is the user dhcpd in Mandrake Linux 8.x, but root in earlier versions.


References:

http://www.cert.org/advisories/CA-2002-12.html
http://www.ngsec.com/docs/advisories/NGSEC-2002-2.txt
________________________________________________________________________

Updated Packages:

Linux-Mandrake 7.2:
63c96314fca7bc3b5588e5d79b0061af 7.2/RPMS/dhcp-3.0b2pl9-4.1mdk.i586.rpm
c4daa6288d8a5ca3efbb8b670c2f892e
7.2/RPMS/dhcp-client-3.0b2pl9-4.1mdk.i586.rpm
b768b4211c5b8f27e579a30b14c39de7 7.2/RPMS/dhcp-relay-3.0b2pl9-4.1mdk.i586.rpm
f7fa458ea1dcff467f6a275f29c46c58 7.2/SRPMS/dhcp-3.0b2pl9-4.1mdk.src.rpm

Mandrake Linux 8.1:
83e839b3daa8b5bc8b68b9c63416d1b1
8.1/RPMS/dhcp-client-3.0-0.rc12.2.1mdk.i586.rpm
5888a11c60ee5c7610b1dc253fb717bb
8.1/RPMS/dhcp-common-3.0-0.rc12.2.1mdk.i586.rpm
d0e736f945d830fef51b66d706b1603e
8.1/RPMS/dhcp-devel-3.0-0.rc12.2.1mdk.i586.rpm
8c2882ea0f2949ce455043a7e2896275
8.1/RPMS/dhcp-relay-3.0-0.rc12.2.1mdk.i586.rpm
2e592364d1585c7035637190328ede78
8.1/RPMS/dhcp-server-3.0-0.rc12.2.1mdk.i586.rpm
f66331a2d7b4e7c449f71c1a8f52419e 8.1/SRPMS/dhcp-3.0-0.rc12.2.1mdk.src.rpm

Mandrake Linux 8.1/ia64:
752a9a7b2b6795d621a628e511245303
ia64/8.1/RPMS/dhcp-client-3.0-0.rc12.2.1mdk.ia64.rpm
fe580cd77c3a81effd9a5763a047c608
ia64/8.1/RPMS/dhcp-common-3.0-0.rc12.2.1mdk.ia64.rpm
6982f91d163ebb868851cc06b879d8d1
ia64/8.1/RPMS/dhcp-devel-3.0-0.rc12.2.1mdk.ia64.rpm
a9f6335bddbe0a6e05bb89994a1f5bad
ia64/8.1/RPMS/dhcp-relay-3.0-0.rc12.2.1mdk.ia64.rpm
e04122ee3308e71d6aeb5cb7fb0469b2
ia64/8.1/RPMS/dhcp-server-3.0-0.rc12.2.1mdk.ia64.rpm
f66331a2d7b4e7c449f71c1a8f52419e
ia64/8.1/SRPMS/dhcp-3.0-0.rc12.2.1mdk.src.rpm

Mandrake Linux 8.2:
371df43752ff22e7fef14dcaba840cdd
8.2/RPMS/dhcp-client-3.0-1rc8.2.1mdk.i586.rpm
a553a675f7846b76b3b59099694e60dc
8.2/RPMS/dhcp-common-3.0-1rc8.2.1mdk.i586.rpm
7ed0e9de3c5ba558c90803cf76be07d9 8.2/RPMS/dhcp-devel-3.0-1rc8.2.1mdk.i586.rpm
64692e67e6852dbe092ccafd9d3ed1cf 8.2/RPMS/dhcp-relay-3.0-1rc8.2.1mdk.i586.rpm
0b727afbe2661aa95f5b2683ab70daae
8.2/RPMS/dhcp-server-3.0-1rc8.2.1mdk.i586.rpm
468feef9cee73cf8b352cbdfbd1ec25f 8.2/SRPMS/dhcp-3.0-1rc8.2.1mdk.src.rpm

Mandrake Linux 8.2/ppc:
24d7cc2f572e27a578aecd8405cb7d97
ppc/8.2/RPMS/dhcp-client-3.0-1rc8.2.1mdk.ppc.rpm
2487d99b2bb6369d84809204aef42983
ppc/8.2/RPMS/dhcp-common-3.0-1rc8.2.1mdk.ppc.rpm
5d668bffa23b215fb2d3db351fe93ce2
ppc/8.2/RPMS/dhcp-devel-3.0-1rc8.2.1mdk.ppc.rpm
48523da7eddd3853c91ad563c05eb576
ppc/8.2/RPMS/dhcp-relay-3.0-1rc8.2.1mdk.ppc.rpm
051c1cf277ea455d8a2459074c3bf181
ppc/8.2/RPMS/dhcp-server-3.0-1rc8.2.1mdk.ppc.rpm
468feef9cee73cf8b352cbdfbd1ec25f ppc/8.2/SRPMS/dhcp-3.0-1rc8.2.1mdk.src.rpm

Single Network Firewall 7.2:
63c96314fca7bc3b5588e5d79b0061af snf7.2/RPMS/dhcp-3.0b2pl9-4.1mdk.i586.rpm
c4daa6288d8a5ca3efbb8b670c2f892e
snf7.2/RPMS/dhcp-client-3.0b2pl9-4.1mdk.i586.rpm
b768b4211c5b8f27e579a30b14c39de7
snf7.2/RPMS/dhcp-relay-3.0b2pl9-4.1mdk.i586.rpm
f7fa458ea1dcff467f6a275f29c46c58 snf7.2/SRPMS/dhcp-3.0b2pl9-4.1mdk.src.rpm
________________________________________________________________________

Bug IDs fixed (see https://qa.mandrakesoft.com for more information):

________________________________________________________________________

To upgrade automatically, use MandrakeUpdate. The verification of md5
checksums and GPG signatures is performed automatically for you.

If you want to upgrade manually, download the updated package from one
of our FTP server mirrors and upgrade with "rpm -Fvh *.rpm". A list of
FTP mirrors can be obtained from:

http://www.mandrakesecure.net/en/ftp.php

Please verify the update prior to upgrading to ensure the integrity of
the downloaded package. You can do this with the command:

rpm --checksig

All packages are signed by MandrakeSoft for security. You can obtain
the GPG public key of the Mandrake Linux Security Team from:

https://www.mandrakesecure.net/RPM-GPG-KEYS

Please be aware that sometimes it takes the mirrors a few hours to
update.

You can view other update advisories for Mandrake Linux at:

http://www.mandrakesecure.net/en/advisories/

MandrakeSoft has several security-related mailing list services that
anyone can subscribe to. Information on these lists can be obtained by
visiting:

http://www.mandrakesecure.net/en/mlist.php

If you want to report vulnerabilities, please contact

[email protected]
________________________________________________________________________

Type Bits/KeyID Date User ID
pub 1024D/22458A98 2000-07-10 Linux Mandrake Security Team



Newsletter signup

Signup to our monthly newsletter and stay in touch with IT news!

Free E-books

We've got ebooks! But they're not online. :( Please give us a few days to bring downloads back.

Contact

Have something to say or just wanna drop us a line? Please keep this in mind: to spam, we reply with spam.

Contact us »