Vulnerability-Lookup

ubuntu-cve-2019-18978

Vulnerability from osv_ubuntu

Published

2019-11-14 21:15

Modified

2025-10-24 04:47

Summary

Details

An issue was discovered in the rack-cors (aka Rack CORS Middleware) gem before 1.0.4 for Ruby. It allows ../ directory traversal to access private resources because resource matching does not ensure that pathnames are in a canonical format.

Severity

5.3 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2019-18978	REPORT
	https://github.com/cyu/rack-cors/compare/v1.0.3..…	REPORT
	https://ubuntu.com/security/notices/USN-4571-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2019-18978	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ruby-rack-cors",
            "binary_version": "0.4.0-1+deb9u2build0.16.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "ruby-rack-cors",
        "purl": "pkg:deb/ubuntu/ruby-rack-cors@0.4.0-1+deb9u2build0.16.04.1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.4.0-1+deb9u2build0.16.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.4.0-1",
        "0.4.0-1+deb9u1build0.16.04.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "ruby-rack-cors",
            "binary_version": "1.0.1-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "ruby-rack-cors",
        "purl": "pkg:deb/ubuntu/ruby-rack-cors@1.0.1-2?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.4.1-1",
        "1.0.1-2"
      ]
    }
  ],
  "aliases": [],
  "details": "An issue was discovered in the rack-cors (aka Rack CORS Middleware) gem before 1.0.4 for Ruby. It allows ../ directory traversal to access private resources because resource matching does not ensure that pathnames are in a canonical format.",
  "id": "UBUNTU-CVE-2019-18978",
  "modified": "2025-10-24T04:47:58Z",
  "published": "2019-11-14T21:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-18978"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/cyu/rack-cors/compare/v1.0.3...v1.0.4"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4571-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2019-18978"
    }
  ],
  "related": [
    "USN-4571-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2019-18978"
  ]
}

CVE-2019-18978 (GCVE-0-2019-18978)

Vulnerability from cvelistv5 – Published: 2019-11-14 20:21 – Updated: 2024-08-05 02:02

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre

References

6 references

URL	Tags
https://github.com/cyu/rack-cors/commit/e4d4fc362…	x_refsource_MISC
https://github.com/cyu/rack-cors/compare/v1.0.3..…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST
https://usn.ubuntu.com/4571-1/	vendor-advisoryx_refsource_UBUNTU
https://www.debian.org/security/2021/dsa-4918	vendor-advisoryx_refsource_DEBIAN

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T02:02:39.801Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/cyu/rack-cors/commit/e4d4fc362a4315808927011cbe5afcfe5486f17d"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/cyu/rack-cors/compare/v1.0.3...v1.0.4"
          },
          {
            "name": "[debian-lts-announce] 20200206 [SECURITY] [DLA 2096-1] ruby-rack-cors security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2020/02/msg00004.html"
          },
          {
            "name": "[debian-lts-announce] 20201001 [SECURITY] [DLA 2389-1] ruby-rack-cors security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00000.html"
          },
          {
            "name": "USN-4571-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4571-1/"
          },
          {
            "name": "DSA-4918",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2021/dsa-4918"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in the rack-cors (aka Rack CORS Middleware) gem before 1.0.4 for Ruby. It allows ../ directory traversal to access private resources because resource matching does not ensure that pathnames are in a canonical format."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-05-18T23:06:12.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cyu/rack-cors/commit/e4d4fc362a4315808927011cbe5afcfe5486f17d"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cyu/rack-cors/compare/v1.0.3...v1.0.4"
        },
        {
          "name": "[debian-lts-announce] 20200206 [SECURITY] [DLA 2096-1] ruby-rack-cors security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2020/02/msg00004.html"
        },
        {
          "name": "[debian-lts-announce] 20201001 [SECURITY] [DLA 2389-1] ruby-rack-cors security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00000.html"
        },
        {
          "name": "USN-4571-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4571-1/"
        },
        {
          "name": "DSA-4918",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2021/dsa-4918"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2019-18978",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "An issue was discovered in the rack-cors (aka Rack CORS Middleware) gem before 1.0.4 for Ruby. It allows ../ directory traversal to access private resources because resource matching does not ensure that pathnames are in a canonical format."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
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        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/cyu/rack-cors/commit/e4d4fc362a4315808927011cbe5afcfe5486f17d",
              "refsource": "MISC",
              "url": "https://github.com/cyu/rack-cors/commit/e4d4fc362a4315808927011cbe5afcfe5486f17d"
            },
            {
              "name": "https://github.com/cyu/rack-cors/compare/v1.0.3...v1.0.4",
              "refsource": "MISC",
              "url": "https://github.com/cyu/rack-cors/compare/v1.0.3...v1.0.4"
            },
            {
              "name": "[debian-lts-announce] 20200206 [SECURITY] [DLA 2096-1] ruby-rack-cors security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2020/02/msg00004.html"
            },
            {
              "name": "[debian-lts-announce] 20201001 [SECURITY] [DLA 2389-1] ruby-rack-cors security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00000.html"
            },
            {
              "name": "USN-4571-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4571-1/"
            },
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              "url": "https://www.debian.org/security/2021/dsa-4918"
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  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2019-18978",
    "datePublished": "2019-11-14T20:21:24.000Z",
    "dateReserved": "2019-11-14T00:00:00.000Z",
    "dateUpdated": "2024-08-05T02:02:39.801Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

usn-4571-1

Vulnerability from osv_ubuntu

Published

2020-10-05 18:20

Modified

2026-04-27 14:11

Summary

ruby-rack-cors vulnerability

Details

It was discovered that rack-cors did not properly handle relative file paths. An attacker could use this vulnerability to access arbitrary files.

References

URL

Type

	https://ubuntu.com/security/notices/USN-4571-1	ADVISORY
	https://ubuntu.com/security/CVE-2019-18978	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2019-18978",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ruby-rack-cors",
            "binary_version": "0.4.0-1+deb9u2build0.16.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "ruby-rack-cors",
        "purl": "pkg:deb/ubuntu/ruby-rack-cors@0.4.0-1+deb9u2build0.16.04.1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.4.0-1+deb9u2build0.16.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.4.0-1",
        "0.4.0-1+deb9u1build0.16.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that rack-cors did not properly handle relative file\npaths. An attacker could use this vulnerability to access arbitrary files.\n",
  "id": "USN-4571-1",
  "modified": "2026-04-27T14:11:25Z",
  "published": "2020-10-05T18:20:07Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4571-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-18978"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "ruby-rack-cors vulnerability",
  "upstream": [
    "UBUNTU-CVE-2019-18978"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

Action not permitted

ubuntu-cve-2019-18978

Vulnerability from osv_ubuntu

CVE-2019-18978 (GCVE-0-2019-18978)

usn-4571-1

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature