{
  "document": {
    "aggregate_severity": {
      "text": "High"
    },
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/centos6els/vex/2021/cve-2021-28831-els_os-centos6els.json"
      }
    ],
    "title": "Security update on CVE-2021-28831",
    "tracking": {
      "current_release_date": "2025-12-23T20:26:03Z",
      "generator": {
        "date": "2025-12-23T20:26:03Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CVE-2021-28831-ELS_OS-CENTOS6ELS",
      "initial_release_date": "2021-03-19T05:15:00Z",
      "revision_history": [
        {
          "date": "2021-03-19T05:15:00Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2025-10-16T14:34:31Z",
          "number": "2",
          "summary": "Official Publication"
        },
        {
          "date": "2025-11-29T11:36:13Z",
          "number": "3",
          "summary": "Update document"
        },
        {
          "date": "2025-12-23T20:26:03Z",
          "number": "4",
          "summary": "Update document"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Community Enterprise Operating System 6",
                "product": {
                  "name": "Community Enterprise Operating System 6",
                  "product_id": "CentOS-6",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:centos:centos:6:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Community Enterprise Operating System"
          }
        ],
        "category": "vendor",
        "name": "Red Hat, Inc."
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "busybox-1:1.15.1-21.el6_6.tuxcare.els2.x86_64",
                "product": {
                  "name": "busybox-1:1.15.1-21.el6_6.tuxcare.els2.x86_64",
                  "product_id": "busybox-1:1.15.1-21.el6_6.tuxcare.els2.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/cloudlinux/busybox@1.15.1-21.el6_6.tuxcare.els2?arch=x86_64&epoch=1"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "busybox-1:1.15.1-21.el6_6.tuxcare.els1.x86_64",
                "product": {
                  "name": "busybox-1:1.15.1-21.el6_6.tuxcare.els1.x86_64",
                  "product_id": "busybox-1:1.15.1-21.el6_6.tuxcare.els1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/cloudlinux/busybox@1.15.1-21.el6_6.tuxcare.els1?arch=x86_64&epoch=1"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "busybox-petitboot-1:1.15.1-21.el6_6.tuxcare.els2.x86_64",
                "product": {
                  "name": "busybox-petitboot-1:1.15.1-21.el6_6.tuxcare.els2.x86_64",
                  "product_id": "busybox-petitboot-1:1.15.1-21.el6_6.tuxcare.els2.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/cloudlinux/busybox-petitboot@1.15.1-21.el6_6.tuxcare.els2?arch=x86_64&epoch=1"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          }
        ],
        "category": "vendor",
        "name": "CloudLinux"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "busybox-1:1.15.1-21.el6_6.tuxcare.els2.x86_64 as a component of Community Enterprise Operating System 6",
          "product_id": "CentOS-6:busybox-1:1.15.1-21.el6_6.tuxcare.els2.x86_64"
        },
        "product_reference": "busybox-1:1.15.1-21.el6_6.tuxcare.els2.x86_64",
        "relates_to_product_reference": "CentOS-6"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "busybox-1:1.15.1-21.el6_6.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 6",
          "product_id": "CentOS-6:busybox-1:1.15.1-21.el6_6.tuxcare.els1.x86_64"
        },
        "product_reference": "busybox-1:1.15.1-21.el6_6.tuxcare.els1.x86_64",
        "relates_to_product_reference": "CentOS-6"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "busybox-petitboot-1:1.15.1-21.el6_6.tuxcare.els2.x86_64 as a component of Community Enterprise Operating System 6",
          "product_id": "CentOS-6:busybox-petitboot-1:1.15.1-21.el6_6.tuxcare.els2.x86_64"
        },
        "product_reference": "busybox-petitboot-1:1.15.1-21.el6_6.tuxcare.els2.x86_64",
        "relates_to_product_reference": "CentOS-6"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-28831",
      "cwe": {
        "id": "CWE-755",
        "name": "Improper Handling of Exceptional Conditions"
      },
      "notes": [
        {
          "category": "description",
          "text": "decompress_gunzip.c in BusyBox through 1.32.1 mishandles the error bit on the huft_build result pointer, with a resultant invalid free or segmentation fault, via malformed gzip data.",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        },
        {
          "category": "other",
          "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.",
          "title": "Statement"
        }
      ],
      "product_status": {
        "known_not_affected": [
          "CentOS-6:busybox-1:1.15.1-21.el6_6.tuxcare.els1.x86_64",
          "CentOS-6:busybox-1:1.15.1-21.el6_6.tuxcare.els2.x86_64",
          "CentOS-6:busybox-petitboot-1:1.15.1-21.el6_6.tuxcare.els2.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2021-28831"
        },
        {
          "category": "external",
          "summary": "https://git.busybox.net/busybox/commit/?id=f25d254dfd4243698c31a4f3153d4ac72aa9e9bd",
          "url": "https://git.busybox.net/busybox/commit/?id=f25d254dfd4243698c31a4f3153d4ac72aa9e9bd"
        },
        {
          "category": "external",
          "summary": "https://lists.debian.org/debian-lts-announce/2021/04/msg00001.html",
          "url": "https://lists.debian.org/debian-lts-announce/2021/04/msg00001.html"
        },
        {
          "category": "external",
          "summary": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UDQGJRECXFS5EZVDH2OI45FMO436AC4/",
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UDQGJRECXFS5EZVDH2OI45FMO436AC4/"
        },
        {
          "category": "external",
          "summary": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7ZIFKPRR32ZYA3WAA2NXFA3QHHOU6FJ/",
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7ZIFKPRR32ZYA3WAA2NXFA3QHHOU6FJ/"
        },
        {
          "category": "external",
          "summary": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZASBW7QRRLY5V2R44MQ4QQM4CZIDHM2U/",
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZASBW7QRRLY5V2R44MQ4QQM4CZIDHM2U/"
        },
        {
          "category": "external",
          "summary": "https://security.gentoo.org/glsa/202105-09",
          "url": "https://security.gentoo.org/glsa/202105-09"
        },
        {
          "category": "external",
          "summary": "https://security.netapp.com/advisory/ntap-20250509-0005/",
          "url": "https://security.netapp.com/advisory/ntap-20250509-0005/"
        },
        {
          "category": "external",
          "summary": "https://lists.debian.org/debian-lts-announce/2025/01/msg00012.html",
          "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00012.html"
        }
      ],
      "release_date": "2021-03-19T05:15:00Z",
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.0,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          },
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "CentOS-6:busybox-1:1.15.1-21.el6_6.tuxcare.els1.x86_64",
            "CentOS-6:busybox-1:1.15.1-21.el6_6.tuxcare.els2.x86_64",
            "CentOS-6:busybox-petitboot-1:1.15.1-21.el6_6.tuxcare.els2.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        },
        {
          "category": "impact",
          "details": "important",
          "product_ids": [
            "CentOS-6:busybox-1:1.15.1-21.el6_6.tuxcare.els1.x86_64",
            "CentOS-6:busybox-1:1.15.1-21.el6_6.tuxcare.els2.x86_64",
            "CentOS-6:busybox-petitboot-1:1.15.1-21.el6_6.tuxcare.els2.x86_64"
          ]
        }
      ]
    }
  ]
}