gsd-2020-10711
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
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.
Aliases
Aliases
CVE-2020-10711


To clipboard 

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    "description": "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.",
    "id": "GSD-2020-10711",
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      "https://www.suse.com/security/cve/CVE-2020-10711.html",
      "https://www.debian.org/security/2020/dsa-4698",
      "https://www.debian.org/security/2020/dsa-4699",
      "https://access.redhat.com/errata/RHSA-2020:2522",
      "https://access.redhat.com/errata/RHSA-2020:2519",
      "https://access.redhat.com/errata/RHSA-2020:2429",
      "https://access.redhat.com/errata/RHSA-2020:2291",
      "https://access.redhat.com/errata/RHSA-2020:2289",
      "https://access.redhat.com/errata/RHSA-2020:2285",
      "https://access.redhat.com/errata/RHSA-2020:2277",
      "https://access.redhat.com/errata/RHSA-2020:2242",
      "https://access.redhat.com/errata/RHSA-2020:2214",
      "https://access.redhat.com/errata/RHSA-2020:2203",
      "https://access.redhat.com/errata/RHSA-2020:2199",
      "https://access.redhat.com/errata/RHSA-2020:2171",
      "https://access.redhat.com/errata/RHSA-2020:2125",
      "https://access.redhat.com/errata/RHSA-2020:2104",
      "https://access.redhat.com/errata/RHSA-2020:2103",
      "https://access.redhat.com/errata/RHSA-2020:2102",
      "https://access.redhat.com/errata/RHSA-2020:2085",
      "https://access.redhat.com/errata/RHSA-2020:2082",
      "https://ubuntu.com/security/CVE-2020-10711",
      "https://advisories.mageia.org/CVE-2020-10711.html",
      "https://alas.aws.amazon.com/cve/html/CVE-2020-10711.html",
      "https://linux.oracle.com/cve/CVE-2020-10711.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
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      "id": "GSD-2020-10711",
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      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "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,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "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"
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          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2022-04-22T18:53Z",
      "publishedDate": "2020-05-22T15:15Z"
    }
  }
}


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