Severity
Medium
Vendor
DHCP
Versions Affected
- Ubuntu 14.04
Description
Sebastian Poehn discovered that the DHCP server, client, and relay incorrectly handled certain malformed UDP packets. A remote attacker could use this issue to cause the DHCP server, client, or relay to stop responding, resulting in a denial of service.
The Cloud Foundry project released a BOSH stemcell version 3146.3 that has the patched version of the Linux kernel. A new Cloud Foundry rootfs was also released, cflinuxfs2 v.1.28.0, that has the patches.
Affected Products and Versions
Severity is medium unless otherwise noted.
- All versions of Cloud Foundry BOSH stemcells prior to 3146.3 are vulnerable.
- All versions of Cloud Foundry cflinuxfs2 prior to v.1.28.0.
Mitigation
Users of affected versions should apply the following mitigation:
- The Cloud Foundry project recommends that Cloud Foundry deployments run with BOSH stemcells 3146.3 or later versions and cflinuxfs2 v.1.28.0 or later versions.
Credit
Sebastian Poehn
