gsd-2022-31163
Vulnerability from gsd
Modified
2022-07-21 00:00
Details
# Impact ## Affected versions - 0.3.60 and earlier. - 1.0.0 to 1.2.9 when used with the Ruby data source (tzinfo-data). ## Vulnerability With the Ruby data source (the tzinfo-data gem for tzinfo version 1.0.0 and later and built-in to earlier versions), time zones are defined in Ruby files. There is one file per time zone. Time zone files are loaded with `require` on demand. In the affected versions, `TZInfo::Timezone.get` fails to validate time zone identifiers correctly, allowing a new line character within the identifier. With Ruby version 1.9.3 and later, `TZInfo::Timezone.get` can be made to load unintended files with `require`, executing them within the Ruby process. For example, with version 1.2.9, you can run the following to load a file with path `/tmp/payload.rb`: ```ruby TZInfo::Timezone.get(\"foo\ /../../../../../../../../../../../../../../../../tmp/payload\") ``` The exact number of parent directory traversals needed will vary depending on the location of the tzinfo-data gem. TZInfo versions 1.2.6 to 1.2.9 can be made to load files from outside of the Ruby load path. Versions up to and including 1.2.5 can only be made to load files from directories within the load path. This could be exploited in, for example, a Ruby on Rails application using tzinfo version 1.2.9, that allows file uploads and has a time zone selector that accepts arbitrary time zone identifiers. The CVSS score and severity have been set on this basis. Versions 2.0.0 and later are not vulnerable. # Patches Versions 0.3.61 and 1.2.10 include fixes to correctly validate time zone identifiers. Note that version 0.3.61 can still load arbitrary files from the Ruby load path if their name follows the rules for a valid time zone identifier and the file has a prefix of `tzinfo/definition` within a directory in the load path. For example if `/tmp/upload` was in the load path, then `TZInfo::Timezone.get('foo')` could load a file with path `/tmp/upload/tzinfo/definition/foo.rb`. Applications should ensure that untrusted files are not placed in a directory on the load path. # Workarounds As a workaround, the time zone identifier can be validated before passing to `TZInfo::Timezone.get` by ensuring it matches the regular expression `\\A[A-Za-z0-9+\\-_]+(?:\\/[A-Za-z0-9+\\-_]+)*\\z`.
Aliases
Aliases
CVE-2022-31163


To clipboard 

{
  "GSD": {
    "alias": "CVE-2022-31163",
    "description": "TZInfo is a Ruby library that provides access to time zone data and allows times to be converted using time zone rules. Versions prior to 0.36.1, as well as those prior to 1.2.10 when used with the Ruby data source tzinfo-data, are vulnerable to relative path traversal. With the Ruby data source, time zones are defined in Ruby files. There is one file per time zone. Time zone files are loaded with `require` on demand. In the affected versions, `TZInfo::Timezone.get` fails to validate time zone identifiers correctly, allowing a new line character within the identifier. With Ruby version 1.9.3 and later, `TZInfo::Timezone.get` can be made to load unintended files with `require`, executing them within the Ruby process. Versions 0.3.61 and 1.2.10 include fixes to correctly validate time zone identifiers. Versions 2.0.0 and later are not vulnerable. Version 0.3.61 can still load arbitrary files from the Ruby load path if their name follows the rules for a valid time zone identifier and the file has a prefix of `tzinfo/definition` within a directory in the load path. Applications should ensure that untrusted files are not placed in a directory on the load path. As a workaround, the time zone identifier can be validated before passing to `TZInfo::Timezone.get` by ensuring it matches the regular expression `\\A[A-Za-z0-9+\\-_]+(?:\\/[A-Za-z0-9+\\-_]+)*\\z`.",
    "id": "GSD-2022-31163",
    "references": [
      "https://www.suse.com/security/cve/CVE-2022-31163.html",
      "https://access.redhat.com/errata/RHSA-2022:7242"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "affected": [
        {
          "package": {
            "ecosystem": "RubyGems",
            "name": "tzinfo",
            "purl": "pkg:gem/tzinfo"
          }
        }
      ],
      "aliases": [
        "CVE-2022-31163",
        "GHSA-5cm2-9h8c-rvfx"
      ],
      "details": "# Impact\n\n## Affected versions\n\n- 0.3.60 and earlier.\n- 1.0.0 to 1.2.9 when used with the Ruby data source (tzinfo-data).\n\n## Vulnerability\n\nWith the Ruby data source (the tzinfo-data gem for tzinfo version 1.0.0 and\nlater and built-in to earlier versions), time zones are defined in Ruby files.\nThere is one file per time zone. Time zone files are loaded with `require` on\ndemand. In the affected versions, `TZInfo::Timezone.get` fails to validate\ntime zone identifiers correctly, allowing a new line character within the\nidentifier. With Ruby version 1.9.3 and later, `TZInfo::Timezone.get` can be\nmade to load unintended files with `require`, executing them within the Ruby\nprocess.\n\nFor example, with version 1.2.9, you can run the following to load a file with\npath `/tmp/payload.rb`:\n\n```ruby\nTZInfo::Timezone.get(\\\"foo\\\n/../../../../../../../../../../../../../../../../tmp/payload\\\")\n```\n\nThe exact number of parent directory traversals needed will vary depending on\nthe location of the tzinfo-data gem.\n\nTZInfo versions 1.2.6 to 1.2.9 can be made to load files from outside of the\nRuby load path. Versions up to and including 1.2.5 can only be made to load\nfiles from directories within the load path.\n\nThis could be exploited in, for example, a Ruby on Rails application using\ntzinfo version 1.2.9, that allows file uploads and has a time zone selector\nthat accepts arbitrary time zone identifiers.\nThe CVSS score and severity have been set on this basis.\n\nVersions 2.0.0 and later are not vulnerable.\n\n# Patches\n\nVersions 0.3.61 and 1.2.10 include fixes to correctly validate time zone\nidentifiers.\n\nNote that version 0.3.61 can still load arbitrary files from the Ruby load\npath if their name follows the rules for a valid time zone identifier and the\nfile has a prefix of `tzinfo/definition` within a directory in the load path.\nFor example if `/tmp/upload` was in the load path, then\n`TZInfo::Timezone.get(\u0027foo\u0027)` could load a file with path\n`/tmp/upload/tzinfo/definition/foo.rb`. Applications should ensure that\nuntrusted files are not placed in a directory on the load path.\n\n# Workarounds\n\nAs a workaround, the time zone identifier can be validated before passing to\n`TZInfo::Timezone.get` by ensuring it matches the regular expression\n`\\\\A[A-Za-z0-9+\\\\-_]+(?:\\\\/[A-Za-z0-9+\\\\-_]+)*\\\\z`.\n",
      "id": "GSD-2022-31163",
      "modified": "2022-07-21T00:00:00.000Z",
      "published": "2022-07-21T00:00:00.000Z",
      "references": [
        {
          "type": "WEB",
          "url": "https://github.com/tzinfo/tzinfo/security/advisories/GHSA-5cm2-9h8c-rvfx"
        },
        {
          "type": "WEB",
          "url": "https://github.com/tzinfo/tzinfo/commit/ca29f349856d62cb2b2edb3257d9ddd2f97b3c27"
        },
        {
          "type": "WEB",
          "url": "https://github.com/tzinfo/tzinfo/releases/tag/v0.3.61"
        },
        {
          "type": "WEB",
          "url": "https://github.com/tzinfo/tzinfo/releases/tag/v1.2.10"
        }
      ],
      "schema_version": "1.4.0",
      "severity": [
        {
          "score": 7.5,
          "type": "CVSS_V3"
        }
      ],
      "summary": "TZInfo relative path traversal vulnerability allows loading of arbitrary files"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2022-31163",
        "STATE": "PUBLIC",
        "TITLE": "TZInfo relative path traversal vulnerability allows loading of arbitrary files"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "tzinfo",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003c 0.3.61"
                        },
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                        }
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                  }
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            }
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      "description": {
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            "lang": "eng",
            "value": "TZInfo is a Ruby library that provides access to time zone data and allows times to be converted using time zone rules. Versions prior to 0.36.1, as well as those prior to 1.2.10 when used with the Ruby data source tzinfo-data, are vulnerable to relative path traversal. With the Ruby data source, time zones are defined in Ruby files. There is one file per time zone. Time zone files are loaded with `require` on demand. In the affected versions, `TZInfo::Timezone.get` fails to validate time zone identifiers correctly, allowing a new line character within the identifier. With Ruby version 1.9.3 and later, `TZInfo::Timezone.get` can be made to load unintended files with `require`, executing them within the Ruby process. Versions 0.3.61 and 1.2.10 include fixes to correctly validate time zone identifiers. Versions 2.0.0 and later are not vulnerable. Version 0.3.61 can still load arbitrary files from the Ruby load path if their name follows the rules for a valid time zone identifier and the file has a prefix of `tzinfo/definition` within a directory in the load path. Applications should ensure that untrusted files are not placed in a directory on the load path. As a workaround, the time zone identifier can be validated before passing to `TZInfo::Timezone.get` by ensuring it matches the regular expression `\\A[A-Za-z0-9+\\-_]+(?:\\/[A-Za-z0-9+\\-_]+)*\\z`."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
              }
            ]
          },
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-23: Relative Path Traversal"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/tzinfo/tzinfo/security/advisories/GHSA-5cm2-9h8c-rvfx",
            "refsource": "CONFIRM",
            "url": "https://github.com/tzinfo/tzinfo/security/advisories/GHSA-5cm2-9h8c-rvfx"
          },
          {
            "name": "https://github.com/tzinfo/tzinfo/releases/tag/v0.3.61",
            "refsource": "MISC",
            "url": "https://github.com/tzinfo/tzinfo/releases/tag/v0.3.61"
          },
          {
            "name": "https://github.com/tzinfo/tzinfo/releases/tag/v1.2.10",
            "refsource": "MISC",
            "url": "https://github.com/tzinfo/tzinfo/releases/tag/v1.2.10"
          },
          {
            "name": "https://github.com/tzinfo/tzinfo/commit/9eddbb5c0e682736f61d0dd803b6031a5db9eadf",
            "refsource": "MISC",
            "url": "https://github.com/tzinfo/tzinfo/commit/9eddbb5c0e682736f61d0dd803b6031a5db9eadf"
          },
          {
            "name": "https://github.com/tzinfo/tzinfo/commit/9905ca93abf7bf3e387bd592406e403cd18334c7",
            "refsource": "MISC",
            "url": "https://github.com/tzinfo/tzinfo/commit/9905ca93abf7bf3e387bd592406e403cd18334c7"
          },
          {
            "name": "[debian-lts-announce] 20220818 [SECURITY] [DLA 3077-1] ruby-tzinfo security update",
            "refsource": "MLIST",
            "url": "https://lists.debian.org/debian-lts-announce/2022/08/msg00009.html"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-5cm2-9h8c-rvfx",
        "discovery": "UNKNOWN"
      }
    },
    "github.com/rubysec/ruby-advisory-db": {
      "cve": "2022-31163",
      "cvss_v3": 7.5,
      "date": "2022-07-21",
      "description": "# Impact\n\n## Affected versions\n\n- 0.3.60 and earlier.\n- 1.0.0 to 1.2.9 when used with the Ruby data source (tzinfo-data).\n\n## Vulnerability\n\nWith the Ruby data source (the tzinfo-data gem for tzinfo version 1.0.0 and\nlater and built-in to earlier versions), time zones are defined in Ruby files.\nThere is one file per time zone. Time zone files are loaded with `require` on\ndemand. In the affected versions, `TZInfo::Timezone.get` fails to validate\ntime zone identifiers correctly, allowing a new line character within the\nidentifier. With Ruby version 1.9.3 and later, `TZInfo::Timezone.get` can be\nmade to load unintended files with `require`, executing them within the Ruby\nprocess.\n\nFor example, with version 1.2.9, you can run the following to load a file with\npath `/tmp/payload.rb`:\n\n```ruby\nTZInfo::Timezone.get(\\\"foo\\\n/../../../../../../../../../../../../../../../../tmp/payload\\\")\n```\n\nThe exact number of parent directory traversals needed will vary depending on\nthe location of the tzinfo-data gem.\n\nTZInfo versions 1.2.6 to 1.2.9 can be made to load files from outside of the\nRuby load path. Versions up to and including 1.2.5 can only be made to load\nfiles from directories within the load path.\n\nThis could be exploited in, for example, a Ruby on Rails application using\ntzinfo version 1.2.9, that allows file uploads and has a time zone selector\nthat accepts arbitrary time zone identifiers.\nThe CVSS score and severity have been set on this basis.\n\nVersions 2.0.0 and later are not vulnerable.\n\n# Patches\n\nVersions 0.3.61 and 1.2.10 include fixes to correctly validate time zone\nidentifiers.\n\nNote that version 0.3.61 can still load arbitrary files from the Ruby load\npath if their name follows the rules for a valid time zone identifier and the\nfile has a prefix of `tzinfo/definition` within a directory in the load path.\nFor example if `/tmp/upload` was in the load path, then\n`TZInfo::Timezone.get(\u0027foo\u0027)` could load a file with path\n`/tmp/upload/tzinfo/definition/foo.rb`. Applications should ensure that\nuntrusted files are not placed in a directory on the load path.\n\n# Workarounds\n\nAs a workaround, the time zone identifier can be validated before passing to\n`TZInfo::Timezone.get` by ensuring it matches the regular expression\n`\\\\A[A-Za-z0-9+\\\\-_]+(?:\\\\/[A-Za-z0-9+\\\\-_]+)*\\\\z`.\n",
      "gem": "tzinfo",
      "ghsa": "5cm2-9h8c-rvfx",
      "patched_versions": [
        "~\u003e 0.3.61",
        "\u003e= 1.2.10"
      ],
      "related": {
        "url": [
          "https://github.com/tzinfo/tzinfo/commit/ca29f349856d62cb2b2edb3257d9ddd2f97b3c27",
          "https://github.com/tzinfo/tzinfo/releases/tag/v0.3.61",
          "https://github.com/tzinfo/tzinfo/releases/tag/v1.2.10"
        ]
      },
      "title": "TZInfo relative path traversal vulnerability allows loading of arbitrary files",
      "unaffected_versions": [
        "\u003e= 2.0.0"
      ],
      "url": "https://github.com/tzinfo/tzinfo/security/advisories/GHSA-5cm2-9h8c-rvfx"
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c0.3.61||\u003e=1.0.0 \u003c1.2.10",
          "affected_versions": "All versions before 0.3.61, all versions starting from 1.0.0 before 1.2.10",
          "cvss_v3": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-22",
            "CWE-937"
          ],
          "date": "2022-10-26",
          "description": "TZInfo is a Ruby library that provides access to time zone data and allows times to be converted using time zone rules. Versions prior to 0.36.1, as well as those prior to 1.2.10 when used with the Ruby data source tzinfo-data, is vulnerable to relative path traversal. With the Ruby data source, time zones are defined in Ruby files. There is one file per time zone. Time zone files are loaded with `require` on demand. In the affected versions, `TZInfo::Timezone.get` fails to validate time zone identifiers correctly, allowing a new line character within the identifier. With Ruby version 1.9.3 and later, `TZInfo::Timezone.get` can be made to load unintended files with `require`, executing them within the Ruby process. Versions 0.3.61 and 1.2.10 include fixes to correctly validate time zone identifiers. Versions 2.0.0 and later are not vulnerable. Version 0.3.61 can still load arbitrary files from the Ruby load path if their name follows the rules for a valid time zone identifier and the file has a prefix of `tzinfo/definition` within a directory in the load path. Applications should ensure that untrusted files are not placed in a directory on the load path. As a workaround, the time zone identifier can be validated before passing to `TZInfo::Timezone.get` by ensuring it matches the regular expression `\\A[A-Za-z0-9+\\-_]+(?:\\/[A-Za-z0-9+\\-_]+)*\\z`.",
          "fixed_versions": [
            "0.3.61",
            "1.2.10"
          ],
          "identifier": "CVE-2022-31163",
          "identifiers": [
            "CVE-2022-31163",
            "GHSA-5cm2-9h8c-rvfx"
          ],
          "not_impacted": "All versions starting from 0.3.61 before 1.0.0, all versions starting from 1.2.10",
          "package_slug": "gem/tzinfo",
          "pubdate": "2022-07-22",
          "solution": "Upgrade to versions 0.3.61, 1.2.10 or above.",
          "title": "Relative Path Traversal",
          "urls": [
            "https://github.com/tzinfo/tzinfo/security/advisories/GHSA-5cm2-9h8c-rvfx",
            "https://nvd.nist.gov/vuln/detail/CVE-2022-31163",
            "https://github.com/tzinfo/tzinfo/commit/ca29f349856d62cb2b2edb3257d9ddd2f97b3c27",
            "https://github.com/tzinfo/tzinfo/releases/tag/v0.3.61",
            "https://github.com/tzinfo/tzinfo/releases/tag/v1.2.10",
            "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/tzinfo/CVE-2022-31163.yml",
            "https://github.com/advisories/GHSA-5cm2-9h8c-rvfx"
          ],
          "uuid": "73f249ef-3b39-4432-be0a-e93073495c3d"
        }
      ]
    },
    "nvd.nist.gov": {
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                "cpe23Uri": "cpe:2.3:a:tzinfo_project:tzinfo:*:*:*:*:*:*:*:*",
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                "versionEndExcluding": "1.2.10",
                "versionStartIncluding": "1.0.0",
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              }
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            "operator": "OR"
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            "children": [],
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          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2022-31163"
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        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "TZInfo is a Ruby library that provides access to time zone data and allows times to be converted using time zone rules. Versions prior to 0.36.1, as well as those prior to 1.2.10 when used with the Ruby data source tzinfo-data, are vulnerable to relative path traversal. With the Ruby data source, time zones are defined in Ruby files. There is one file per time zone. Time zone files are loaded with `require` on demand. In the affected versions, `TZInfo::Timezone.get` fails to validate time zone identifiers correctly, allowing a new line character within the identifier. With Ruby version 1.9.3 and later, `TZInfo::Timezone.get` can be made to load unintended files with `require`, executing them within the Ruby process. Versions 0.3.61 and 1.2.10 include fixes to correctly validate time zone identifiers. Versions 2.0.0 and later are not vulnerable. Version 0.3.61 can still load arbitrary files from the Ruby load path if their name follows the rules for a valid time zone identifier and the file has a prefix of `tzinfo/definition` within a directory in the load path. Applications should ensure that untrusted files are not placed in a directory on the load path. As a workaround, the time zone identifier can be validated before passing to `TZInfo::Timezone.get` by ensuring it matches the regular expression `\\A[A-Za-z0-9+\\-_]+(?:\\/[A-Za-z0-9+\\-_]+)*\\z`."
            }
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        "problemtype": {
          "problemtype_data": [
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                  "value": "CWE-22"
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                  "value": "CWE-23"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/tzinfo/tzinfo/releases/tag/v0.3.61",
              "refsource": "MISC",
              "tags": [
                "Release Notes",
                "Third Party Advisory"
              ],
              "url": "https://github.com/tzinfo/tzinfo/releases/tag/v0.3.61"
            },
            {
              "name": "https://github.com/tzinfo/tzinfo/security/advisories/GHSA-5cm2-9h8c-rvfx",
              "refsource": "CONFIRM",
              "tags": [
                "Exploit",
                "Third Party Advisory"
              ],
              "url": "https://github.com/tzinfo/tzinfo/security/advisories/GHSA-5cm2-9h8c-rvfx"
            },
            {
              "name": "https://github.com/tzinfo/tzinfo/releases/tag/v1.2.10",
              "refsource": "MISC",
              "tags": [
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                "Third Party Advisory"
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              "url": "https://github.com/tzinfo/tzinfo/releases/tag/v1.2.10"
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              "name": "https://github.com/tzinfo/tzinfo/commit/9eddbb5c0e682736f61d0dd803b6031a5db9eadf",
              "refsource": "MISC",
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                "Patch",
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              "url": "https://github.com/tzinfo/tzinfo/commit/9eddbb5c0e682736f61d0dd803b6031a5db9eadf"
            },
            {
              "name": "https://github.com/tzinfo/tzinfo/commit/9905ca93abf7bf3e387bd592406e403cd18334c7",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/tzinfo/tzinfo/commit/9905ca93abf7bf3e387bd592406e403cd18334c7"
            },
            {
              "name": "[debian-lts-announce] 20220818 [SECURITY] [DLA 3077-1] ruby-tzinfo security update",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://lists.debian.org/debian-lts-announce/2022/08/msg00009.html"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.2,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2022-10-26T19:00Z",
      "publishedDate": "2022-07-22T04:15Z"
    }
  }
}


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Tags
Taxonomy of the tags.




  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.