cve-2021-22566
Vulnerability from cvelistv5
Published
2022-01-18 14:10
Modified
2024-08-03 18:44
Severity ?
5.1 (Medium) - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Summary
An incorrect setting of UXN bits within mmu_flags_to_s1_pte_attr lead to privileged executable pages being mapped as executable from an unprivileged context. This can be leveraged by an attacker to bypass executability restrictions of kernel-mode pages from user-mode. An incorrect setting of PXN bits within mmu_flags_to_s1_pte_attr lead to unprivileged executable pages being mapped as executable from a privileged context. This can be leveraged by an attacker to bypass executability restrictions of user-mode pages from kernel-mode. Typically this allows a potential attacker to circumvent a mitigation, making exploitation of potential kernel-mode vulnerabilities easier. We recommend updating kernel beyond commit 7d731b4e9599088ac3073956933559da7bca6a00 and rebuilding.
References
cve-coordination@google.comhttps://fuchsia.googlesource.com/fuchsia/+/7d731b4e9599088ac3073956933559da7bca6a00Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://fuchsia.googlesource.com/fuchsia/+/7d731b4e9599088ac3073956933559da7bca6a00Mailing List, Patch, Third Party Advisory
Impacted products
Vendor Product Version
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:o:google:fuchsia:-:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "fuchsia",
            "vendor": "google",
            "versions": [
              {
                "status": "affected",
                "version": "0"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-22566",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-05-15T15:03:54.346945Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:15:27.163Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T18:44:14.082Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://fuchsia.googlesource.com/fuchsia/+/7d731b4e9599088ac3073956933559da7bca6a00"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Fuchsia",
          "repo": "https://fuchsia.googlesource.com/fuchsia",
          "vendor": "Google LLC",
          "versions": [
            {
              "lessThan": "7d731b4e9599088ac3073956933559da7bca6a00",
              "status": "affected",
              "version": "0",
              "versionType": "git"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eAn incorrect setting of UXN bits within mmu_flags_to_s1_pte_attr lead to privileged executable pages being mapped as executable from an unprivileged context. This can be leveraged by an attacker to bypass executability restrictions of kernel-mode pages from user-mode. An incorrect setting of PXN bits within mmu_flags_to_s1_pte_attr lead to unprivileged executable pages being mapped as executable from a privileged context. This can be leveraged by an attacker to bypass executability restrictions of user-mode pages from kernel-mode. Typically this allows a potential attacker to circumvent a mitigation, making exploitation of potential kernel-mode vulnerabilities easier. We recommend updating kernel beyond commit 7d731b4e9599088ac3073956933559da7bca6a00 and rebuilding.\u003c/p\u003e"
            }
          ],
          "value": "An incorrect setting of UXN bits within mmu_flags_to_s1_pte_attr lead to privileged executable pages being mapped as executable from an unprivileged context. This can be leveraged by an attacker to bypass executability restrictions of kernel-mode pages from user-mode. An incorrect setting of PXN bits within mmu_flags_to_s1_pte_attr lead to unprivileged executable pages being mapped as executable from a privileged context. This can be leveraged by an attacker to bypass executability restrictions of user-mode pages from kernel-mode. Typically this allows a potential attacker to circumvent a mitigation, making exploitation of potential kernel-mode vulnerabilities easier. We recommend updating kernel beyond commit 7d731b4e9599088ac3073956933559da7bca6a00 and rebuilding."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-275",
              "description": "CWE-275 Permission Issues",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-05-15T10:11:28.435Z",
        "orgId": "14ed7db2-1595-443d-9d34-6215bf890778",
        "shortName": "Google"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://fuchsia.googlesource.com/fuchsia/+/7d731b4e9599088ac3073956933559da7bca6a00"
        }
      ],
      "source": {
        "discovery": "INTERNAL"
      },
      "title": "Incorrect mapping of Executable bits in Fuchsia Kernel",
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@google.com",
          "ID": "CVE-2021-22566",
          "STATE": "PUBLIC",
          "TITLE": "Incorrect mapping of Executable bits in Fuchsia Kernel"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Fuchsia",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "https://fuchsia.googlesource.com/fuchsia/+/7d731b4e9599088ac3073956933559da7bca6a00"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Google LLC"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "An incorrect setting of UXN bits within mmu_flags_to_s1_pte_attr lead to privileged executable pages being mapped as executable from an unprivileged context. This can be leveraged by an attacker to bypass executability restrictions of kernel-mode pages from user-mode. An incorrect setting of PXN bits within mmu_flags_to_s1_pte_attr lead to unprivileged executable pages being mapped as executable from a privileged context. This can be leveraged by an attacker to bypass executability restrictions of user-mode pages from kernel-mode. Typically this allows a potential attacker to circumvent a mitigation, making exploitation of potential kernel-mode vulnerabilities easier. We recommend updating kernel beyond commit 7d731b4e9599088ac3073956933559da7bca6a00 and rebuilding."
            }
          ]
        },
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-275 Permission Issues"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://fuchsia.googlesource.com/fuchsia/+/7d731b4e9599088ac3073956933559da7bca6a00",
              "refsource": "MISC",
              "url": "https://fuchsia.googlesource.com/fuchsia/+/7d731b4e9599088ac3073956933559da7bca6a00"
            }
          ]
        },
        "source": {
          "discovery": "INTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778",
    "assignerShortName": "Google",
    "cveId": "CVE-2021-22566",
    "datePublished": "2022-01-18T14:10:10",
    "dateReserved": "2021-01-05T00:00:00",
    "dateUpdated": "2024-08-03T18:44:14.082Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:google:fuchsia:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"1F2FFF3A-A215-4002-9B7D-0D1161189EB4\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"An incorrect setting of UXN bits within mmu_flags_to_s1_pte_attr lead to privileged executable pages being mapped as executable from an unprivileged context. This can be leveraged by an attacker to bypass executability restrictions of kernel-mode pages from user-mode. An incorrect setting of PXN bits within mmu_flags_to_s1_pte_attr lead to unprivileged executable pages being mapped as executable from a privileged context. This can be leveraged by an attacker to bypass executability restrictions of user-mode pages from kernel-mode. Typically this allows a potential attacker to circumvent a mitigation, making exploitation of potential kernel-mode vulnerabilities easier. We recommend updating kernel beyond commit 7d731b4e9599088ac3073956933559da7bca6a00 and rebuilding.\"}, {\"lang\": \"es\", \"value\": \"Una configuraci\\u00f3n incorrecta de los bits UXN dentro de mmu_flags_to_s1_pte_attr conlleva a que las p\\u00e1ginas ejecutables privilegiadas sean mapeadas como ejecutables desde un contexto no privilegiado. Esto puede ser aprovechado por un atacante para omitir las restricciones de ejecuci\\u00f3n de las p\\u00e1ginas en modo kernel desde el modo usuario. Una configuraci\\u00f3n incorrecta de los bits PXN dentro de mmu_flags_to_s1_pte_attr conlleva a que p\\u00e1ginas ejecutables no privilegiadas sean mapeadas como ejecutables desde un contexto con privilegios. Esto puede ser aprovechado por un atacante para omitir las restricciones de ejecuci\\u00f3n de las p\\u00e1ginas en modo usuario desde el modo kernel. Normalmente, esto permite a un atacante potencial omitir una mitigaci\\u00f3n, facilitando la explotaci\\u00f3n de posibles vulnerabilidades en modo kernel. Recomendamos actualizar el kernel m\\u00e1s all\\u00e1 del commit 7d731b4e9599088ac3073956933559da7bca6a00 y reconstruirlo\"}]",
      "id": "CVE-2021-22566",
      "lastModified": "2024-11-21T05:50:20.203",
      "metrics": "{\"cvssMetricV40\": [{\"source\": \"cve-coordination@google.com\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"4.0\", \"vectorString\": \"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/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\": 5.1, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"vulnerableSystemConfidentiality\": \"LOW\", \"vulnerableSystemIntegrity\": \"LOW\", \"vulnerableSystemAvailability\": \"NONE\", \"subsequentSystemConfidentiality\": \"LOW\", \"subsequentSystemIntegrity\": \"LOW\", \"subsequentSystemAvailability\": \"NONE\", \"exploitMaturity\": \"NOT_DEFINED\", \"confidentialityRequirements\": \"NOT_DEFINED\", \"integrityRequirements\": \"NOT_DEFINED\", \"availabilityRequirements\": \"NOT_DEFINED\", \"modifiedAttackVector\": \"NOT_DEFINED\", \"modifiedAttackComplexity\": \"NOT_DEFINED\", \"modifiedAttackRequirements\": \"NOT_DEFINED\", \"modifiedPrivilegesRequired\": \"NOT_DEFINED\", \"modifiedUserInteraction\": \"NOT_DEFINED\", \"modifiedVulnerableSystemConfidentiality\": \"NOT_DEFINED\", \"modifiedVulnerableSystemIntegrity\": \"NOT_DEFINED\", \"modifiedVulnerableSystemAvailability\": \"NOT_DEFINED\", \"modifiedSubsequentSystemConfidentiality\": \"NOT_DEFINED\", \"modifiedSubsequentSystemIntegrity\": \"NOT_DEFINED\", \"modifiedSubsequentSystemAvailability\": \"NOT_DEFINED\", \"safety\": \"NOT_DEFINED\", \"automatable\": \"NOT_DEFINED\", \"recovery\": \"NOT_DEFINED\", \"valueDensity\": \"NOT_DEFINED\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\", \"providerUrgency\": \"NOT_DEFINED\"}}], \"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 9.8, \"baseSeverity\": \"CRITICAL\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 5.9}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:L/Au:N/C:P/I:P/A:P\", \"baseScore\": 7.5, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"PARTIAL\", \"integrityImpact\": \"PARTIAL\", \"availabilityImpact\": \"PARTIAL\"}, \"baseSeverity\": \"HIGH\", \"exploitabilityScore\": 10.0, \"impactScore\": 6.4, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2022-01-18T14:15:07.920",
      "references": "[{\"url\": \"https://fuchsia.googlesource.com/fuchsia/+/7d731b4e9599088ac3073956933559da7bca6a00\", \"source\": \"cve-coordination@google.com\", \"tags\": [\"Mailing List\", \"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://fuchsia.googlesource.com/fuchsia/+/7d731b4e9599088ac3073956933559da7bca6a00\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Patch\", \"Third Party Advisory\"]}]",
      "sourceIdentifier": "cve-coordination@google.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"cve-coordination@google.com\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-275\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-732\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-22566\",\"sourceIdentifier\":\"cve-coordination@google.com\",\"published\":\"2022-01-18T14:15:07.920\",\"lastModified\":\"2024-11-21T05:50:20.203\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An incorrect setting of UXN bits within mmu_flags_to_s1_pte_attr lead to privileged executable pages being mapped as executable from an unprivileged context. This can be leveraged by an attacker to bypass executability restrictions of kernel-mode pages from user-mode. An incorrect setting of PXN bits within mmu_flags_to_s1_pte_attr lead to unprivileged executable pages being mapped as executable from a privileged context. This can be leveraged by an attacker to bypass executability restrictions of user-mode pages from kernel-mode. Typically this allows a potential attacker to circumvent a mitigation, making exploitation of potential kernel-mode vulnerabilities easier. We recommend updating kernel beyond commit 7d731b4e9599088ac3073956933559da7bca6a00 and rebuilding.\"},{\"lang\":\"es\",\"value\":\"Una configuraci\u00f3n incorrecta de los bits UXN dentro de mmu_flags_to_s1_pte_attr conlleva a que las p\u00e1ginas ejecutables privilegiadas sean mapeadas como ejecutables desde un contexto no privilegiado. Esto puede ser aprovechado por un atacante para omitir las restricciones de ejecuci\u00f3n de las p\u00e1ginas en modo kernel desde el modo usuario. Una configuraci\u00f3n incorrecta de los bits PXN dentro de mmu_flags_to_s1_pte_attr conlleva a que p\u00e1ginas ejecutables no privilegiadas sean mapeadas como ejecutables desde un contexto con privilegios. Esto puede ser aprovechado por un atacante para omitir las restricciones de ejecuci\u00f3n de las p\u00e1ginas en modo usuario desde el modo kernel. Normalmente, esto permite a un atacante potencial omitir una mitigaci\u00f3n, facilitando la explotaci\u00f3n de posibles vulnerabilidades en modo kernel. Recomendamos actualizar el kernel m\u00e1s all\u00e1 del commit 7d731b4e9599088ac3073956933559da7bca6a00 y reconstruirlo\"}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"cve-coordination@google.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/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\":5.1,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnerableSystemConfidentiality\":\"LOW\",\"vulnerableSystemIntegrity\":\"LOW\",\"vulnerableSystemAvailability\":\"NONE\",\"subsequentSystemConfidentiality\":\"LOW\",\"subsequentSystemIntegrity\":\"LOW\",\"subsequentSystemAvailability\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirements\":\"NOT_DEFINED\",\"integrityRequirements\":\"NOT_DEFINED\",\"availabilityRequirements\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnerableSystemConfidentiality\":\"NOT_DEFINED\",\"modifiedVulnerableSystemIntegrity\":\"NOT_DEFINED\",\"modifiedVulnerableSystemAvailability\":\"NOT_DEFINED\",\"modifiedSubsequentSystemConfidentiality\":\"NOT_DEFINED\",\"modifiedSubsequentSystemIntegrity\":\"NOT_DEFINED\",\"modifiedSubsequentSystemAvailability\":\"NOT_DEFINED\",\"safety\":\"NOT_DEFINED\",\"automatable\":\"NOT_DEFINED\",\"recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:P/A:P\",\"baseScore\":7.5,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":10.0,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"cve-coordination@google.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-275\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-732\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:google:fuchsia:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"1F2FFF3A-A215-4002-9B7D-0D1161189EB4\"}]}]}],\"references\":[{\"url\":\"https://fuchsia.googlesource.com/fuchsia/+/7d731b4e9599088ac3073956933559da7bca6a00\",\"source\":\"cve-coordination@google.com\",\"tags\":[\"Mailing List\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://fuchsia.googlesource.com/fuchsia/+/7d731b4e9599088ac3073956933559da7bca6a00\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Patch\",\"Third Party Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://fuchsia.googlesource.com/fuchsia/+/7d731b4e9599088ac3073956933559da7bca6a00\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T18:44:14.082Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-22566\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-05-15T15:03:54.346945Z\"}}}], \"affected\": [{\"cpes\": [\"cpe:2.3:o:google:fuchsia:-:*:*:*:*:*:*:*\"], \"vendor\": \"google\", \"product\": \"fuchsia\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\"}], \"defaultStatus\": \"unknown\"}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-15T15:02:51.120Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"Incorrect mapping of Executable bits in Fuchsia Kernel\", \"source\": {\"discovery\": \"INTERNAL\"}, \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 5.1, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"LOW\", \"vulnIntegrityImpact\": \"LOW\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"LOW\", \"vulnConfidentialityImpact\": \"LOW\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"repo\": \"https://fuchsia.googlesource.com/fuchsia\", \"vendor\": \"Google LLC\", \"product\": \"Fuchsia\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"7d731b4e9599088ac3073956933559da7bca6a00\", \"versionType\": \"git\"}], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://fuchsia.googlesource.com/fuchsia/+/7d731b4e9599088ac3073956933559da7bca6a00\", \"tags\": [\"x_refsource_MISC\"]}], \"x_generator\": {\"engine\": \"Vulnogram 0.0.9\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"An incorrect setting of UXN bits within mmu_flags_to_s1_pte_attr lead to privileged executable pages being mapped as executable from an unprivileged context. This can be leveraged by an attacker to bypass executability restrictions of kernel-mode pages from user-mode. An incorrect setting of PXN bits within mmu_flags_to_s1_pte_attr lead to unprivileged executable pages being mapped as executable from a privileged context. This can be leveraged by an attacker to bypass executability restrictions of user-mode pages from kernel-mode. Typically this allows a potential attacker to circumvent a mitigation, making exploitation of potential kernel-mode vulnerabilities easier. We recommend updating kernel beyond commit 7d731b4e9599088ac3073956933559da7bca6a00 and rebuilding.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eAn incorrect setting of UXN bits within mmu_flags_to_s1_pte_attr lead to privileged executable pages being mapped as executable from an unprivileged context. This can be leveraged by an attacker to bypass executability restrictions of kernel-mode pages from user-mode. An incorrect setting of PXN bits within mmu_flags_to_s1_pte_attr lead to unprivileged executable pages being mapped as executable from a privileged context. This can be leveraged by an attacker to bypass executability restrictions of user-mode pages from kernel-mode. Typically this allows a potential attacker to circumvent a mitigation, making exploitation of potential kernel-mode vulnerabilities easier. We recommend updating kernel beyond commit 7d731b4e9599088ac3073956933559da7bca6a00 and rebuilding.\u003c/p\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-275\", \"description\": \"CWE-275 Permission Issues\"}]}], \"providerMetadata\": {\"orgId\": \"14ed7db2-1595-443d-9d34-6215bf890778\", \"shortName\": \"Google\", \"dateUpdated\": \"2024-05-15T10:11:28.435Z\"}, \"x_legacyV4Record\": {\"impact\": {\"cvss\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 5.7, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"LOW\"}}, \"source\": {\"discovery\": \"INTERNAL\"}, \"affects\": {\"vendor\": {\"vendor_data\": [{\"product\": {\"product_data\": [{\"version\": {\"version_data\": [{\"version_value\": \"https://fuchsia.googlesource.com/fuchsia/+/7d731b4e9599088ac3073956933559da7bca6a00\", \"version_affected\": \"\u003c\"}]}, \"product_name\": \"Fuchsia\"}]}, \"vendor_name\": \"Google LLC\"}]}}, \"data_type\": \"CVE\", \"generator\": {\"engine\": \"Vulnogram 0.0.9\"}, \"references\": {\"reference_data\": [{\"url\": \"https://fuchsia.googlesource.com/fuchsia/+/7d731b4e9599088ac3073956933559da7bca6a00\", \"name\": \"https://fuchsia.googlesource.com/fuchsia/+/7d731b4e9599088ac3073956933559da7bca6a00\", \"refsource\": \"MISC\"}]}, \"data_format\": \"MITRE\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"An incorrect setting of UXN bits within mmu_flags_to_s1_pte_attr lead to privileged executable pages being mapped as executable from an unprivileged context. This can be leveraged by an attacker to bypass executability restrictions of kernel-mode pages from user-mode. An incorrect setting of PXN bits within mmu_flags_to_s1_pte_attr lead to unprivileged executable pages being mapped as executable from a privileged context. This can be leveraged by an attacker to bypass executability restrictions of user-mode pages from kernel-mode. Typically this allows a potential attacker to circumvent a mitigation, making exploitation of potential kernel-mode vulnerabilities easier. We recommend updating kernel beyond commit 7d731b4e9599088ac3073956933559da7bca6a00 and rebuilding.\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"CWE-275 Permission Issues\"}]}]}, \"data_version\": \"4.0\", \"CVE_data_meta\": {\"ID\": \"CVE-2021-22566\", \"STATE\": \"PUBLIC\", \"TITLE\": \"Incorrect mapping of Executable bits in Fuchsia Kernel\", \"ASSIGNER\": \"security@google.com\"}}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-22566\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-08-03T18:44:14.082Z\", \"dateReserved\": \"2021-01-05T00:00:00\", \"assignerOrgId\": \"14ed7db2-1595-443d-9d34-6215bf890778\", \"datePublished\": \"2022-01-18T14:10:10\", \"assignerShortName\": \"Google\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




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.