Zincati is an auto-update agent for Fedora CoreOS hosts. Zincati ships a polkit rule which allows the `zincati` system user to use the actions `org.projectatomic.rpmostree1.deploy` to deploy updates to the system and `org.projectatomic.rpmostree1.finalize-deployment` to reboot the system into the deployed update. Since Zincati v0.0.24, this polkit rule contains a logic error which broadens access of those polkit actions to any unprivileged user rather than just the `zincati` system user. In practice, this means that any unprivileged user with access to the system D-Bus socket is able to deploy older Fedora CoreOS versions (which may have other known vulnerabilities). Note that rpm-ostree enforces that the selected version must be from the same branch the system is currently on so this cannot directly be used to deploy an attacker-controlled update payload. This primarily impacts users running untrusted workloads with access to the system D-Bus socket. Note that in general, untrusted workloads should not be given this access, whether containerized or not. By default, containers do not have access to the system D-Bus socket. The logic error is fixed in Zincati v0.0.30. A workaround is to manually add a following polkit rule, instructions for which are available in the GitHub Security Advisory.

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-19fabb2ca6 advisory.

    New upstream release v0.0.30 see: https://github.com/coreos/zincati/releases/tag/v0.0.30

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 40 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-43bcbb0795 advisory.

    New upstream release v0.0.30 see: https://github.com/coreos/zincati/releases/tag/v0.0.30

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 41 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-cc269f80fa advisory.

    New upstream release v0.0.30 see: https://github.com/coreos/zincati/releases/tag/v0.0.30

    ----

    Backport polkit rules patch for CVE-2025-27512

    - https://github.com/coreos/zincati/security/advisories/GHSA-w6fv-6gcc-x825
    - https://www.cve.org/CVERecord?id=CVE-2025-27512
    - https://github.com/coreos/zincati/commit/920ac90204830e43fd597f3dcbacf0d772b50a81


Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
238466	Fedora 42 : rust-zincati (2025-19fabb2ca6)	Nessus	Fedora Local Security Checks	medium
233749	Fedora 40 : rust-zincati (2025-43bcbb0795)	Nessus	Fedora Local Security Checks	medium
233748	Fedora 41 : rust-zincati (2025-cc269f80fa)	Nessus	Fedora Local Security Checks	medium

Detections

Analytics

CVE-2025-27512

medium

Tenable Plugins

medium

medium

medium