dhclient in ISC DHCP 3.0.x through 4.2.x before 4.2.1-P1, 3.1-ESV before 3.1-ESV-R1, and 4.1-ESV before 4.1-ESV-R2 allows remote attackers to execute arbitrary commands via shell metacharacters in a hostname obtained from a DHCP message, as demonstrated by a hostname that is provided to dhclient-script.
2011-04-08T15:17:27.387
2025-04-11T00:51:21.963
Deferred
CVSSv2: 7.5 (HIGH)
AV:N/AC:L/Au:N/C:P/I:P/A:P
10.0
6.4
Type | Vendor | Product | Version/Range | Vulnerable? |
---|---|---|---|---|
Application | isc | dhcp | 3.0 | Yes |
Application | isc | dhcp | 3.0.1 | Yes |
Application | isc | dhcp | 3.0.1 | Yes |
Application | isc | dhcp | 3.0.1 | Yes |
Application | isc | dhcp | 3.0.1 | Yes |
Application | isc | dhcp | 3.0.1 | Yes |
Application | isc | dhcp | 3.0.1 | Yes |
Application | isc | dhcp | 3.0.1 | Yes |
Application | isc | dhcp | 3.0.1 | Yes |
Application | isc | dhcp | 3.0.1 | Yes |
Application | isc | dhcp | 3.0.1 | Yes |
Application | isc | dhcp | 3.0.1 | Yes |
Application | isc | dhcp | 3.0.1 | Yes |
Application | isc | dhcp | 3.0.1 | Yes |
Application | isc | dhcp | 3.0.2 | Yes |
Application | isc | dhcp | 3.0.2 | Yes |
Application | isc | dhcp | 3.0.2 | Yes |
Application | isc | dhcp | 3.0.2 | Yes |
Application | isc | dhcp | 3.0.2 | Yes |
Application | isc | dhcp | 3.0.3 | Yes |
Application | isc | dhcp | 3.0.3 | Yes |
Application | isc | dhcp | 3.0.3 | Yes |
Application | isc | dhcp | 3.0.3 | Yes |
Application | isc | dhcp | 3.0.4 | Yes |
Application | isc | dhcp | 3.0.4 | Yes |
Application | isc | dhcp | 3.0.4 | Yes |
Application | isc | dhcp | 3.0.4 | Yes |
Application | isc | dhcp | 3.0.4 | Yes |
Application | isc | dhcp | 3.0.5 | Yes |
Application | isc | dhcp | 3.0.5 | Yes |
Application | isc | dhcp | 3.0.6 | Yes |
Application | isc | dhcp | 3.1-esv | Yes |
Application | isc | dhcp | 3.1.0 | Yes |
Application | isc | dhcp | 3.1.0 | Yes |
Application | isc | dhcp | 3.1.0 | Yes |
Application | isc | dhcp | 3.1.0 | Yes |
Application | isc | dhcp | 3.1.0 | Yes |
Application | isc | dhcp | 3.1.0 | Yes |
Application | isc | dhcp | 3.1.0 | Yes |
Application | isc | dhcp | 3.1.1 | Yes |
Application | isc | dhcp | 3.1.1 | Yes |
Application | isc | dhcp | 3.1.2 | Yes |
Application | isc | dhcp | 3.1.2 | Yes |
Application | isc | dhcp | 3.1.2 | Yes |
Application | isc | dhcp | 3.1.3 | Yes |
Application | isc | dhcp | 3.1.3 | Yes |
Application | isc | dhcp | 3.1.3 | Yes |
Application | isc | dhcp | 4.1-esv | Yes |
Application | isc | dhcp | 4.1-esv | Yes |
Application | isc | dhcp | 4.2.0 | Yes |
Application | isc | dhcp | 4.2.0 | Yes |
Application | isc | dhcp | 4.2.0 | Yes |
Application | isc | dhcp | 4.2.0 | Yes |
Application | isc | dhcp | 4.2.0 | Yes |
Application | isc | dhcp | 4.2.0 | Yes |
Application | isc | dhcp | 4.2.0 | Yes |
Application | isc | dhcp | 4.2.1 | Yes |
Application | isc | dhcp | 4.2.1 | Yes |
Application | isc | dhcp | 4.2.1 | Yes |
Operating System | debian | debian_linux | 5.0 | Yes |
Operating System | debian | debian_linux | 6.0 | Yes |
Operating System | debian | debian_linux | 7.0 | Yes |
Operating System | canonical | ubuntu_linux | 6.06 | Yes |
Operating System | canonical | ubuntu_linux | 8.04 | Yes |
Operating System | canonical | ubuntu_linux | 9.10 | Yes |
Operating System | canonical | ubuntu_linux | 10.04 | Yes |
Operating System | canonical | ubuntu_linux | 10.10 | Yes |