CVE-2009-1893: ISC Dhcp

Medium severity, CVSS 6.9. EPSS: 0.6% chance of exploitation in the next 30 days.

The configtest function in the Red Hat dhcpd init script for DHCP 3.0.1 in Red Hat Enterprise Linux (RHEL) 3 allows local users to overwrite arbitrary files via a symlink attack on an unspecified temporary file, related to the "dhcpd -t" command.

Affected products

• ISC Dhcp: version 3.0.1 only
• Red Hat Enterprise Linux: version 3.0 only

Published 2009-07-17. Last modified 2026-06-16.