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2 vulnerabilities found for zincati by coreos
CVE-2025-27512 (GCVE-0-2025-27512)
Vulnerability from nvd – Published: 2025-03-17 14:46 – Updated: 2025-03-17 15:01
VLAI
EPSS
VEX
Title
Zincati allows unprivileged access to rpm-ostree D-Bus `Deploy()` and `FinalizeDeployment()` methods
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/coreos/zincati/security/adviso… | x_refsource_CONFIRM |
| https://github.com/coreos/zincati/commit/01d8e89f… | x_refsource_MISC |
| https://github.com/coreos/zincati/commit/28a43aa2… | x_refsource_MISC |
| https://github.com/coreos/zincati/releases/tag/v0.0.24 | x_refsource_MISC |
| https://github.com/coreos/zincati/releases/tag/v0.0.30 | x_refsource_MISC |
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CVE-2025-27512 (GCVE-0-2025-27512)
Vulnerability from cvelistv5 – Published: 2025-03-17 14:46 – Updated: 2025-03-17 15:01
VLAI
EPSS
VEX
Title
Zincati allows unprivileged access to rpm-ostree D-Bus `Deploy()` and `FinalizeDeployment()` methods
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/coreos/zincati/security/adviso… | x_refsource_CONFIRM |
| https://github.com/coreos/zincati/commit/01d8e89f… | x_refsource_MISC |
| https://github.com/coreos/zincati/commit/28a43aa2… | x_refsource_MISC |
| https://github.com/coreos/zincati/releases/tag/v0.0.24 | x_refsource_MISC |
| https://github.com/coreos/zincati/releases/tag/v0.0.30 | x_refsource_MISC |
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