Multiple vulnerabilities have been found in dhcpcd allowing remote attackers to possibly execute arbitrary code or cause a Denial of Service.
|Package||net-misc/dhcpcd on all architectures|
|Affected versions||< 6.10.0|
|Unaffected versions||>= 6.10.0|
A fully featured, yet light weight RFC2131 compliant DHCP client
A heap overflow can be triggered via malformed DHCP responses in the print_option (via dhcp_envoption1) due to incorrect option length values. These vulnerabilities could also allow remote attackers to trigger an invalid read/crash via malformed DHCP responses.
Remote attackers could possibly execute arbitrary code with the privileges of the process or cause Denial of Service.
There is no known workaround at this time.
All dhcpcd users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/dhcpcd-6.10.0”
June 18, 2016
June 18, 2016: 2