FKIE_CVE-2020-10711

Vulnerability from fkie_nvd - Published: 2020-05-22 15:15 - Updated: 2024-11-21 04:55
Severity ?
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
A NULL pointer dereference flaw was found in the Linux kernel's SELinux subsystem in versions before 5.7. This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol's category bitmap into the SELinux extensible bitmap via the' ebitmap_netlbl_import' routine. While processing the CIPSO restricted bitmap tag in the 'cipso_v4_parsetag_rbm' routine, it sets the security attribute to indicate that the category bitmap is present, even if it has not been allocated. This issue leads to a NULL pointer dereference issue while importing the same category bitmap into SELinux. This flaw allows a remote network user to crash the system kernel, resulting in a denial of service.
References
secalert@redhat.comhttp://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.htmlMailing List, Third Party Advisory
secalert@redhat.comhttp://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.htmlMailing List, Third Party Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10711Issue Tracking, Patch, Third Party Advisory
secalert@redhat.comhttps://lists.debian.org/debian-lts-announce/2020/06/msg00012.htmlThird Party Advisory
secalert@redhat.comhttps://security.netapp.com/advisory/ntap-20200608-0001/Third Party Advisory
secalert@redhat.comhttps://usn.ubuntu.com/4411-1/Third Party Advisory
secalert@redhat.comhttps://usn.ubuntu.com/4412-1/Third Party Advisory
secalert@redhat.comhttps://usn.ubuntu.com/4413-1/Third Party Advisory
secalert@redhat.comhttps://usn.ubuntu.com/4414-1/Third Party Advisory
secalert@redhat.comhttps://usn.ubuntu.com/4419-1/Third Party Advisory
secalert@redhat.comhttps://www.debian.org/security/2020/dsa-4698Third Party Advisory
secalert@redhat.comhttps://www.debian.org/security/2020/dsa-4699Third Party Advisory
secalert@redhat.comhttps://www.openwall.com/lists/oss-security/2020/05/12/2Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10711Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2020/06/msg00012.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20200608-0001/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4411-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4412-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4413-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4414-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4419-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2020/dsa-4698Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2020/dsa-4699Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.openwall.com/lists/oss-security/2020/05/12/2Mailing List, Patch, Third Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
redhat 3scale 2.0
redhat openstack 13
redhat virtualization_host 4.0
redhat enterprise_linux 6.0
redhat enterprise_linux 7.0
redhat enterprise_linux 8.0
redhat enterprise_linux_aus 7.4
redhat enterprise_linux_server_tus 7.4
redhat messaging_realtime_grid 2.0
debian debian_linux 8.0
debian debian_linux 9.0
debian debian_linux 10.0
opensuse leap 15.1
opensuse leap 15.2
canonical ubuntu_linux 14.04
canonical ubuntu_linux 16.04
canonical ubuntu_linux 18.04
canonical ubuntu_linux 19.10
canonical ubuntu_linux 20.04
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C3821E00-CCBB-4CD4-AD2C-D47DFF2F5A34",
              "versionEndExcluding": "5.7",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:redhat:3scale:2.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "5BBA2217-0805-427B-81E2-13516C0EDCFD",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:*",
              "matchCriteriaId": "704CFA1A-953E-4105-BFBE-406034B83DED",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "BB28F9AF-3D06-4532-B397-96D7E4792503",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "2F6AB192-9D7D-4A9A-8995-E53A9DE9EAFC",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_aus:7.4:*:*:*:*:*:*:*",
              "matchCriteriaId": "CB33390A-F51F-4451-8FEA-7FC31F1AA51C",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:*",
              "matchCriteriaId": "D5F7E11E-FB34-4467-8919-2B6BEAABF665",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:messaging_realtime_grid:2.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "7F0ED77E-6D8E-48DF-9D2E-4E821399F893",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "B620311B-34A3-48A6-82DF-6F078D7A4493",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "B009C22E-30A4-4288-BCF6-C3E81DEAF45A",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*",
              "matchCriteriaId": "815D70A8-47D3-459C-A32C-9FEACA0659D1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*",
              "matchCriteriaId": "7A5301BF-1402-4BE0-A0F8-69FBE79BC6D6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
              "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*",
              "matchCriteriaId": "A31C8344-3E02-4EB8-8BD8-4C84B7959624",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*",
              "matchCriteriaId": "902B8056-9E37-443B-8905-8AA93E2447FB",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A NULL pointer dereference flaw was found in the Linux kernel\u0027s SELinux subsystem in versions before 5.7. This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol\u0027s category bitmap into the SELinux extensible bitmap via the\u0027 ebitmap_netlbl_import\u0027 routine. While processing the CIPSO restricted bitmap tag in the \u0027cipso_v4_parsetag_rbm\u0027 routine, it sets the security attribute to indicate that the category bitmap is present, even if it has not been allocated. This issue leads to a NULL pointer dereference issue while importing the same category bitmap into SELinux. This flaw allows a remote network user to crash the system kernel, resulting in a denial of service."
    },
    {
      "lang": "es",
      "value": "Se encontr\u00f3 un fallo de desreferencia de puntero NULL en el subsistema SELinux del kernel de Linux en versiones anteriores a 5.7. Este fallo se produce al importar la categor\u00eda de protocolo Commercial IP Security Option (CIPSO) en el mapa de bits extensible de SELinux por medio de la rutina \"ebitmap_netlbl_import\". Mientras procesa la etiqueta de mapa de bits restringido CIPSO en la rutina \"cipso_v4_parsetag_rbm\", establece el atributo de seguridad para indicar que la categor\u00eda de mapa de bits est\u00e1 presente, incluso si no ha sido asignada. Esto conlleva a un problema de desreferencia de puntero NULL al importar el mismo mapa de bits de categor\u00eda hacia SELinux. Este fallo permite a un usuario remoto de la red bloquear el kernel del sistema, resultando en una denegaci\u00f3n de servicio."
    }
  ],
  "id": "CVE-2020-10711",
  "lastModified": "2024-11-21T04:55:54.213",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.3,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6,
        "source": "secalert@redhat.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2020-05-22T15:15:11.207",
  "references": [
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10711"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.netapp.com/advisory/ntap-20200608-0001/"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/4411-1/"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/4412-1/"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/4413-1/"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/4414-1/"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/4419-1/"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2020/dsa-4698"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2020/dsa-4699"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Mailing List",
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://www.openwall.com/lists/oss-security/2020/05/12/2"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10711"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.netapp.com/advisory/ntap-20200608-0001/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/4411-1/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/4412-1/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/4413-1/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/4414-1/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/4419-1/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2020/dsa-4698"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2020/dsa-4699"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://www.openwall.com/lists/oss-security/2020/05/12/2"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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 observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.