gsd-2021-33033
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value.
Aliases
Aliases
CVE-2021-33033


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-33033",
    "description": "The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value.",
    "id": "GSD-2021-33033",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-33033.html",
      "https://access.redhat.com/errata/RHSA-2021:4356",
      "https://access.redhat.com/errata/RHSA-2021:4140",
      "https://access.redhat.com/errata/RHSA-2021:2726",
      "https://access.redhat.com/errata/RHSA-2021:2725",
      "https://ubuntu.com/security/CVE-2021-33033",
      "https://alas.aws.amazon.com/cve/html/CVE-2021-33033.html",
      "https://linux.oracle.com/cve/CVE-2021-33033.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-33033"
      ],
      "details": "The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value.",
      "id": "GSD-2021-33033",
      "modified": "2023-12-13T01:23:18.800214Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2021-33033",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "n/a"
                        }
                      ]
                    }
                  }
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              },
              "vendor_name": "n/a"
            }
          ]
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      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
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            "value": "The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.7",
            "refsource": "MISC",
            "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.7"
          },
          {
            "name": "https://syzkaller.appspot.com/bug?id=96e7d345748d8814901c91cd92084ed04b46701e",
            "refsource": "MISC",
            "url": "https://syzkaller.appspot.com/bug?id=96e7d345748d8814901c91cd92084ed04b46701e"
          },
          {
            "name": "https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-cipso_v4_genopt",
            "refsource": "MISC",
            "url": "https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-cipso_v4_genopt"
          },
          {
            "name": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ad5d07f4a9cd671233ae20983848874731102c08",
            "refsource": "MISC",
            "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ad5d07f4a9cd671233ae20983848874731102c08"
          },
          {
            "name": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8",
            "refsource": "MISC",
            "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8"
          },
          {
            "name": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.14",
            "refsource": "MISC",
            "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.14"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "5.11.14",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-33033"
        },
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
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              "value": "The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-416"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ad5d07f4a9cd671233ae20983848874731102c08",
              "refsource": "MISC",
              "tags": [
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            },
            {
              "name": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.14",
              "refsource": "MISC",
              "tags": [
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                "Patch",
                "Vendor Advisory"
              ],
              "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.14"
            },
            {
              "name": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.7",
              "refsource": "MISC",
              "tags": [
                "Mailing List",
                "Patch",
                "Vendor Advisory"
              ],
              "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.7"
            },
            {
              "name": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8",
              "refsource": "MISC",
              "tags": [
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                "Patch",
                "Vendor Advisory"
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              "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8"
            },
            {
              "name": "https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-cipso_v4_genopt",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Third Party Advisory"
              ],
              "url": "https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-cipso_v4_genopt"
            },
            {
              "name": "https://syzkaller.appspot.com/bug?id=96e7d345748d8814901c91cd92084ed04b46701e",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://syzkaller.appspot.com/bug?id=96e7d345748d8814901c91cd92084ed04b46701e"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.6,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2021-06-09T18:37Z",
      "publishedDate": "2021-05-14T23:15Z"
    }
  }
}


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