CVE-2025-27512
Vulnerability from cvelistv5
Published
2025-03-17 14:46
Modified
2025-03-17 15:01
Severity ?
2.1 (Low) - CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
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.
References
security-advisories@github.comhttps://github.com/coreos/zincati/commit/01d8e89f799e6ba21bdf7dc668abce23bd0d8f78
security-advisories@github.comhttps://github.com/coreos/zincati/commit/28a43aa2c1edda091ba659677d73c13e6e3ea99d
security-advisories@github.comhttps://github.com/coreos/zincati/releases/tag/v0.0.24
security-advisories@github.comhttps://github.com/coreos/zincati/releases/tag/v0.0.30
security-advisories@github.comhttps://github.com/coreos/zincati/security/advisories/GHSA-w6fv-6gcc-x825
Impacted products
Vendor Product Version
coreos zincati Version: >= 0.0.24, < 0.0.30
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
   containers: {
      adp: [
         {
            metrics: [
               {
                  other: {
                     content: {
                        id: "CVE-2025-27512",
                        options: [
                           {
                              Exploitation: "none",
                           },
                           {
                              Automatable: "no",
                           },
                           {
                              "Technical Impact": "partial",
                           },
                        ],
                        role: "CISA Coordinator",
                        timestamp: "2025-03-17T15:01:29.371339Z",
                        version: "2.0.3",
                     },
                     type: "ssvc",
                  },
               },
            ],
            providerMetadata: {
               dateUpdated: "2025-03-17T15:01:42.057Z",
               orgId: "134c704f-9b21-4f2e-91b3-4a467353bcc0",
               shortName: "CISA-ADP",
            },
            title: "CISA ADP Vulnrichment",
         },
      ],
      cna: {
         affected: [
            {
               product: "zincati",
               vendor: "coreos",
               versions: [
                  {
                     status: "affected",
                     version: ">= 0.0.24, < 0.0.30",
                  },
               ],
            },
         ],
         descriptions: [
            {
               lang: "en",
               value: "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.",
            },
         ],
         metrics: [
            {
               cvssV4_0: {
                  attackComplexity: "LOW",
                  attackRequirements: "PRESENT",
                  attackVector: "LOCAL",
                  baseScore: 2.1,
                  baseSeverity: "LOW",
                  privilegesRequired: "NONE",
                  subAvailabilityImpact: "NONE",
                  subConfidentialityImpact: "NONE",
                  subIntegrityImpact: "NONE",
                  userInteraction: "NONE",
                  vectorString: "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U",
                  version: "4.0",
                  vulnAvailabilityImpact: "NONE",
                  vulnConfidentialityImpact: "NONE",
                  vulnIntegrityImpact: "HIGH",
               },
            },
         ],
         problemTypes: [
            {
               descriptions: [
                  {
                     cweId: "CWE-783",
                     description: "CWE-783: Operator Precedence Logic Error",
                     lang: "en",
                     type: "CWE",
                  },
               ],
            },
            {
               descriptions: [
                  {
                     cweId: "CWE-863",
                     description: "CWE-863: Incorrect Authorization",
                     lang: "en",
                     type: "CWE",
                  },
               ],
            },
         ],
         providerMetadata: {
            dateUpdated: "2025-03-17T14:46:28.219Z",
            orgId: "a0819718-46f1-4df5-94e2-005712e83aaa",
            shortName: "GitHub_M",
         },
         references: [
            {
               name: "https://github.com/coreos/zincati/security/advisories/GHSA-w6fv-6gcc-x825",
               tags: [
                  "x_refsource_CONFIRM",
               ],
               url: "https://github.com/coreos/zincati/security/advisories/GHSA-w6fv-6gcc-x825",
            },
            {
               name: "https://github.com/coreos/zincati/commit/01d8e89f799e6ba21bdf7dc668abce23bd0d8f78",
               tags: [
                  "x_refsource_MISC",
               ],
               url: "https://github.com/coreos/zincati/commit/01d8e89f799e6ba21bdf7dc668abce23bd0d8f78",
            },
            {
               name: "https://github.com/coreos/zincati/commit/28a43aa2c1edda091ba659677d73c13e6e3ea99d",
               tags: [
                  "x_refsource_MISC",
               ],
               url: "https://github.com/coreos/zincati/commit/28a43aa2c1edda091ba659677d73c13e6e3ea99d",
            },
            {
               name: "https://github.com/coreos/zincati/releases/tag/v0.0.24",
               tags: [
                  "x_refsource_MISC",
               ],
               url: "https://github.com/coreos/zincati/releases/tag/v0.0.24",
            },
            {
               name: "https://github.com/coreos/zincati/releases/tag/v0.0.30",
               tags: [
                  "x_refsource_MISC",
               ],
               url: "https://github.com/coreos/zincati/releases/tag/v0.0.30",
            },
         ],
         source: {
            advisory: "GHSA-w6fv-6gcc-x825",
            discovery: "UNKNOWN",
         },
         title: "Zincati allows unprivileged access to rpm-ostree D-Bus `Deploy()` and `FinalizeDeployment()` methods",
      },
   },
   cveMetadata: {
      assignerOrgId: "a0819718-46f1-4df5-94e2-005712e83aaa",
      assignerShortName: "GitHub_M",
      cveId: "CVE-2025-27512",
      datePublished: "2025-03-17T14:46:28.219Z",
      dateReserved: "2025-02-26T18:11:52.306Z",
      dateUpdated: "2025-03-17T15:01:42.057Z",
      state: "PUBLISHED",
   },
   dataType: "CVE_RECORD",
   dataVersion: "5.1",
   "vulnerability-lookup:meta": {
      nvd: "{\"cve\":{\"id\":\"CVE-2025-27512\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2025-03-17T15:15:44.557\",\"lastModified\":\"2025-03-17T15:15:44.557\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\"}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X\",\"baseScore\":2.1,\"baseSeverity\":\"LOW\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"PRESENT\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"NONE\",\"vulnIntegrityImpact\":\"HIGH\",\"vulnAvailabilityImpact\":\"NONE\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"UNREPORTED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-783\"},{\"lang\":\"en\",\"value\":\"CWE-863\"}]}],\"references\":[{\"url\":\"https://github.com/coreos/zincati/commit/01d8e89f799e6ba21bdf7dc668abce23bd0d8f78\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/coreos/zincati/commit/28a43aa2c1edda091ba659677d73c13e6e3ea99d\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/coreos/zincati/releases/tag/v0.0.24\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/coreos/zincati/releases/tag/v0.0.30\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/coreos/zincati/security/advisories/GHSA-w6fv-6gcc-x825\",\"source\":\"security-advisories@github.com\"}]}}",
      vulnrichment: {
         containers: "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-27512\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-03-17T15:01:29.371339Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-03-17T15:01:36.484Z\"}}], \"cna\": {\"title\": \"Zincati allows unprivileged access to rpm-ostree D-Bus `Deploy()` and `FinalizeDeployment()` methods\", \"source\": {\"advisory\": \"GHSA-w6fv-6gcc-x825\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 2.1, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"LOW\", \"vectorString\": \"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"PRESENT\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"HIGH\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"coreos\", \"product\": \"zincati\", \"versions\": [{\"status\": \"affected\", \"version\": \">= 0.0.24, < 0.0.30\"}]}], \"references\": [{\"url\": \"https://github.com/coreos/zincati/security/advisories/GHSA-w6fv-6gcc-x825\", \"name\": \"https://github.com/coreos/zincati/security/advisories/GHSA-w6fv-6gcc-x825\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/coreos/zincati/commit/01d8e89f799e6ba21bdf7dc668abce23bd0d8f78\", \"name\": \"https://github.com/coreos/zincati/commit/01d8e89f799e6ba21bdf7dc668abce23bd0d8f78\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/coreos/zincati/commit/28a43aa2c1edda091ba659677d73c13e6e3ea99d\", \"name\": \"https://github.com/coreos/zincati/commit/28a43aa2c1edda091ba659677d73c13e6e3ea99d\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/coreos/zincati/releases/tag/v0.0.24\", \"name\": \"https://github.com/coreos/zincati/releases/tag/v0.0.24\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/coreos/zincati/releases/tag/v0.0.30\", \"name\": \"https://github.com/coreos/zincati/releases/tag/v0.0.30\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-783\", \"description\": \"CWE-783: Operator Precedence Logic Error\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-863\", \"description\": \"CWE-863: Incorrect Authorization\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2025-03-17T14:46:28.219Z\"}}}",
         cveMetadata: "{\"cveId\": \"CVE-2025-27512\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-03-17T15:01:42.057Z\", \"dateReserved\": \"2025-02-26T18:11:52.306Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2025-03-17T14:46:28.219Z\", \"assignerShortName\": \"GitHub_M\"}",
         dataType: "CVE_RECORD",
         dataVersion: "5.1",
      },
   },
}


Log in or create an account to share your comment.

Security Advisory comment format.

This schema specifies the format of a comment related to a security advisory.

UUIDv4 of the comment
UUIDv4 of the Vulnerability-Lookup instance
When the comment was created originally
When the comment was last updated
Title of the comment
Description of the comment
The identifier of the vulnerability (CVE ID, GHSA-ID, PYSEC ID, etc.).



Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.