{
  "id": "CVE-2020-7453",
  "sourceIdentifier": "secteam@freebsd.org",
  "published": "2020-04-29T00:15:12.093",
  "lastModified": "2020-05-06T16:47:26.720",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "In FreeBSD 12.1-STABLE before r359021, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r359020, and 11.3-RELEASE before 11.3-RELEASE-p7, a missing null termination check in the jail_set configuration option \"osrelease\" may return more bytes with a subsequent jail_get system call allowing a malicious jail superuser with permission to create nested jails to read kernel memory."
    },
    {
      "lang": "es",
      "value": "En FreeBSD versiones 12.1-ESTABLE anteriores a r359021, versiones 12.1-RELEASE anteriores a 12.1-RELEASE-p3, versiones 11.3-ESTABLE anteriores a r359020 y versiones 11.3-RELEASE anteriores a 11.3-RELEASE-p7, una falta de comprobaci\u00f3n de terminaci\u00f3n null en la opci\u00f3n de configuraci\u00f3n \"osrelease\" de jail_set puede devolver m\u00e1s bytes con una llamada posterior al sistema jail_get que permite a un superusuario de jaula (jail) malicioso con permiso para crear jaulas (jails) anidadas leer la memoria del kernel."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE",
          "baseScore": 6.0,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 0.8,
        "impactScore": 5.2
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:N",
          "accessVector": "LOCAL",
          "accessComplexity": "MEDIUM",
          "authentication": "NONE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "NONE",
          "baseScore": 3.3
        },
        "baseSeverity": "LOW",
        "exploitabilityScore": 3.4,
        "impactScore": 4.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-754"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:freebsd:freebsd:11.3:-:*:*:*:*:*:*",
              "matchCriteriaId": "F35957CE-AF9F-40CA-BDD1-FA6A0E73783F"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p1:*:*:*:*:*:*",
              "matchCriteriaId": "EA929713-B797-494A-853D-C121D9D69519"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p2:*:*:*:*:*:*",
              "matchCriteriaId": "3C3D8EDC-91D3-45B2-AC1D-EF4346D4A714"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p3:*:*:*:*:*:*",
              "matchCriteriaId": "EA5006FF-06A5-4D95-BF5B-29F26248D11F"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p4:*:*:*:*:*:*",
              "matchCriteriaId": "A705031B-FD63-4076-B92E-E826E11D7111"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p5:*:*:*:*:*:*",
              "matchCriteriaId": "11C1EFB1-68E5-45F4-A7E1-744574F290D1"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p6:*:*:*:*:*:*",
              "matchCriteriaId": "25F649A7-9265-4552-8934-BCE083363982"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:freebsd:freebsd:12.1:-:*:*:*:*:*:*",
              "matchCriteriaId": "BD730B6A-F123-4685-ACB3-4F20AAAB77F3"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:freebsd:freebsd:12.1:p1:*:*:*:*:*:*",
              "matchCriteriaId": "508150E3-2C0C-4EEB-BFC9-BB5CEB404C06"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:freebsd:freebsd:12.1:p2:*:*:*:*:*:*",
              "matchCriteriaId": "B5D692EF-A5D7-430E-91BA-4CD137343B66"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-20:08.jail.asc",
      "source": "secteam@freebsd.org",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ]
    }
  ]
}