gsd-2019-12209
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
Yubico pam-u2f 1.0.7 attempts parsing of the configured authfile (default $HOME/.config/Yubico/u2f_keys) as root (unless openasuser was enabled), and does not properly verify that the path lacks symlinks pointing to other files on the system owned by root. If the debug option is enabled in the PAM configuration, part of the file contents of a symlink target will be logged, possibly revealing sensitive information.
Aliases
Aliases
CVE-2019-12209


To clipboard 

{
  "GSD": {
    "alias": "CVE-2019-12209",
    "description": "Yubico pam-u2f 1.0.7 attempts parsing of the configured authfile (default $HOME/.config/Yubico/u2f_keys) as root (unless openasuser was enabled), and does not properly verify that the path lacks symlinks pointing to other files on the system owned by root. If the debug option is enabled in the PAM configuration, part of the file contents of a symlink target will be logged, possibly revealing sensitive information.",
    "id": "GSD-2019-12209",
    "references": [
      "https://www.suse.com/security/cve/CVE-2019-12209.html",
      "https://security.archlinux.org/CVE-2019-12209"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2019-12209"
      ],
      "details": "Yubico pam-u2f 1.0.7 attempts parsing of the configured authfile (default $HOME/.config/Yubico/u2f_keys) as root (unless openasuser was enabled), and does not properly verify that the path lacks symlinks pointing to other files on the system owned by root. If the debug option is enabled in the PAM configuration, part of the file contents of a symlink target will be logged, possibly revealing sensitive information.",
      "id": "GSD-2019-12209",
      "modified": "2023-12-13T01:23:43.562263Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2019-12209",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "n/a"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "n/a"
            }
          ]
        }
      },
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      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
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            "value": "Yubico pam-u2f 1.0.7 attempts parsing of the configured authfile (default $HOME/.config/Yubico/u2f_keys) as root (unless openasuser was enabled), and does not properly verify that the path lacks symlinks pointing to other files on the system owned by root. If the debug option is enabled in the PAM configuration, part of the file contents of a symlink target will be logged, possibly revealing sensitive information."
          }
        ]
      },
      "problemtype": {
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          {
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              {
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                "value": "n/a"
              }
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          }
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      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/Yubico/pam-u2f/commit/7db3386fcdb454e33a3ea30dcfb8e8960d4c3aa3",
            "refsource": "CONFIRM",
            "url": "https://github.com/Yubico/pam-u2f/commit/7db3386fcdb454e33a3ea30dcfb8e8960d4c3aa3"
          },
          {
            "name": "https://developers.yubico.com/pam-u2f/Release_Notes.html",
            "refsource": "CONFIRM",
            "url": "https://developers.yubico.com/pam-u2f/Release_Notes.html"
          },
          {
            "name": "[oss-security] 20190605 pam-u2f: CVE-2019-12210: debug_file file descriptor leak, CVE-2019-12209: symlink attack on u2f_keys leading to possible information leak",
            "refsource": "MLIST",
            "url": "http://www.openwall.com/lists/oss-security/2019/06/05/1"
          },
          {
            "name": "FEDORA-2019-b6d3c8b0a8",
            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5FOR4ADC356JPCHAJI5UXZORLC3VNBPS/"
          },
          {
            "name": "openSUSE-SU-2019:1708",
            "refsource": "SUSE",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00012.html"
          },
          {
            "name": "openSUSE-SU-2019:1725",
            "refsource": "SUSE",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00018.html"
          },
          {
            "name": "FEDORA-2019-cd8f4b9568",
            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZCGU6UQLI3ZTW3UYCTMQW7VDL5M4LCWR/"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:yubico:pam-u2f:1.0.7:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2019-12209"
        },
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
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            {
              "lang": "en",
              "value": "Yubico pam-u2f 1.0.7 attempts parsing of the configured authfile (default $HOME/.config/Yubico/u2f_keys) as root (unless openasuser was enabled), and does not properly verify that the path lacks symlinks pointing to other files on the system owned by root. If the debug option is enabled in the PAM configuration, part of the file contents of a symlink target will be logged, possibly revealing sensitive information."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-59"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/Yubico/pam-u2f/commit/7db3386fcdb454e33a3ea30dcfb8e8960d4c3aa3",
              "refsource": "CONFIRM",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/Yubico/pam-u2f/commit/7db3386fcdb454e33a3ea30dcfb8e8960d4c3aa3"
            },
            {
              "name": "https://developers.yubico.com/pam-u2f/Release_Notes.html",
              "refsource": "CONFIRM",
              "tags": [
                "Release Notes",
                "Vendor Advisory"
              ],
              "url": "https://developers.yubico.com/pam-u2f/Release_Notes.html"
            },
            {
              "name": "[oss-security] 20190605 pam-u2f: CVE-2019-12210: debug_file file descriptor leak, CVE-2019-12209: symlink attack on u2f_keys leading to possible information leak",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Exploit",
                "Third Party Advisory"
              ],
              "url": "http://www.openwall.com/lists/oss-security/2019/06/05/1"
            },
            {
              "name": "FEDORA-2019-b6d3c8b0a8",
              "refsource": "FEDORA",
              "tags": [],
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5FOR4ADC356JPCHAJI5UXZORLC3VNBPS/"
            },
            {
              "name": "openSUSE-SU-2019:1708",
              "refsource": "SUSE",
              "tags": [],
              "url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00012.html"
            },
            {
              "name": "openSUSE-SU-2019:1725",
              "refsource": "SUSE",
              "tags": [],
              "url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00018.html"
            },
            {
              "name": "FEDORA-2019-cd8f4b9568",
              "refsource": "FEDORA",
              "tags": [],
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZCGU6UQLI3ZTW3UYCTMQW7VDL5M4LCWR/"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2020-08-24T17:37Z",
      "publishedDate": "2019-06-04T21:29Z"
    }
  }
}


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