GSD-2020-10711

Vulnerability from gsd - Updated: 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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    "id": "GSD-2020-10711",
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      "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",
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      "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"
    ]
  },
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      "remediation": "unknown",
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          "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"
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          "exploitabilityScore": 8.6,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
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            "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",
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      "lastModifiedDate": "2022-04-22T18:53Z",
      "publishedDate": "2020-05-22T15:15Z"
    }
  }
}


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  • 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.
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  • 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.



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