The DHCPv6 client (dhcp6c) as used in the dhcpv6 project through 2011-07-25 allows remote DHCP servers to execute arbitrary commands via shell metacharacters in a hostname obtained from a DHCP message.
https://www.openwall.com/lists/oss-security/2011/07/26/9
https://vigilance.fr/vulnerability/dhcp6c-shell-command-injection-10869
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-2717
https://access.redhat.com/security/cve/cve-2011-2717
Source: Mitre, NVD
Published: 2019-11-27
Updated: 2019-12-18
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Severity: Critical
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.01124