Rapid7 Vulnerability & Exploit Database

SuSE 9.1 security update for dhcp

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SuSE 9.1 security update for dhcp

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
11/01/2004
Created
07/25/2018
Added
11/01/2004
Modified
11/18/2015

Description

The system is missing one or more SuSE security patches. This update fixes insecure temp file handling of the DHCP server, which could have been exploited locally by a symlink attack, and improves security of the chroot jail. The dhcp server used easily guessable filenames when creating a new lease file in the directory /var/lib/dhcp. Since the directory was owned by the nobody user, another process running under the same user id could trick the server (which initially runs as root when starting up) into overwriting arbitrary files via a symlink attack. The DHCP server now runs under its own user id (dhcpd), the leases file has been moved to /var/lib/dhcp/db, and the rest of the chroot jail is owned by root.

Solution(s)

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