CVE-2026-104117: Missing authorization in illumos ipmgmtd allows local users to change persistent IPMP group membership

Severity: low (CVSS 1.9 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-09 · updated 2026-10-09
Weakness: CWE-862

Description

A missing authorization check in the illumos IP management daemon (ipmgmtd) allows a local user to change the persistent IP multipathing (IPMP) configuration. The ipmgmtd door dispatch table in usr/src/cmd/cmd-inet/lib/ipmgmtd/ipmgmt_door.c does not require the solaris.network.interface.config authorization for the IPMGMT_CMD_IPMP_UPDATE command, although its handler, ipmgmt_ipmp_update_handler(), writes to the persistent ipadm configuration when the IPMGMT_PERSIST flag is set. An unprivileged local user can therefore add interfaces to, or remove them from, existing IPMP groups in the stored configuration. The running configuration is not changed; the modification takes effect when the stored configuration is next applied, such as at boot, and may disrupt network connectivity. The flaw has existed since 2021 (illumos-gate commit a73be61a), and affects any illumos distribution prior to illumos-gate commit e8d3efa1.

Affected products

OmniOS: from r151042 before r151054; from r151058 before r151058w; from r151056 before r151056aw; from r151054 before r151054bw — fixed in r151054, r151054bw, r151056aw, r151058w

How to fix

Upgrade to a fixed version: OmniOS r151054, r151054bw, r151056aw, r151058w. Check the vendor advisory for mitigations.

References

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