shadow-utils (aka shadow) 4.4 through 4.17.0 establishes a default /etc/subuid behavior (e.g., uid 100000 through 165535 for the first user account) that can realistically conflict with the uids of users defined on locally administered networks, potentially leading to account takeover, e.g., by leveraging newuidmap for access to an NFS home directory (or same-host resources in the case of remote logins by these local network users). NOTE: it may also be argued that system administrators should not have assigned uids, within local networks, that are within the range that can occur in /etc/subuid.
Weakness
The product initializes or sets a resource with a default that is intended to be changed by the product’s installer, administrator, or maintainer, but the default is not secure.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | RedHat | shadow-utils-2:4.15.0-8.el10 | * |
| Red Hat Enterprise Linux 9 | RedHat | shadow-utils-2:4.9-15.el9 | * |
| Red Hat AI Inference Server 3.2 | RedHat | rhaiis/vllm-cuda-rhel9:sha256:ec961e5acfde5c1ad0a7e0e2c86a0bf56b9bc46357fa124f9db6dff1006076ab | * |
| Red Hat AI Inference Server 3.2 | RedHat | rhaiis/vllm-rocm-rhel9:sha256:7856bdb7ae0d643a7b9362c164d4d4fe3c0c7186f5fff73a7ae9835b3df52e57 | * |
| Red Hat AI Inference Server 3.2 | RedHat | rhaiis/model-opt-cuda-rhel9:sha256:dce6b0ea03379bf06664a5200af8b5f5ae3fad13cdce6d21873843f22554800b | * |
| Red Hat Ceph Storage 7 | RedHat | rhceph/rhceph-7-rhel9:sha256:ce213d48fbefae6b9d5f5a64b79c6ed016afcb646bf7b5742707ed31f9a464a2 | * |
| Red Hat Ceph Storage 8 | RedHat | rhceph/rhceph-8-rhel9:sha256:08f8552a0a56a47ab606bed47b603e3d2aedaa389d4a5df4dbfa06acee85c0c0 | * |
| Red Hat Discovery 2 | RedHat | discovery/discovery-server-rhel9:sha256:b4683720677a1e45efbfd291d8b130b530642221e8a55a49e931e1b8b2c81ac3 | * |
| Red Hat Discovery 2 | RedHat | discovery/discovery-ui-rhel9:sha256:310df392f638ef6eca1a26db024ae2cb617db5932f886d2acddc92fb7289e740 | * |
| Red Hat Insights proxy 1.5 | RedHat | insights-proxy/insights-proxy-container-rhel9:sha256:345d8bc236043df01ce0557357d20fa443719dc943038f9648cfac0c5a465cfe | * |
| Shadow | Ubuntu | focal | * |
| Shadow | Ubuntu | oracular | * |
| Shadow | Ubuntu | plucky | * |