Vulnerability-Lookup

ubuntu-cve-2021-3918

Vulnerability from osv_ubuntu

Published

2021-11-13 09:15

Modified

2025-07-18 16:46

Summary

Details

json-schema is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Severity

9.8 (Critical)


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

9.8 (Critical)


                    
                      CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2021-3918	REPORT
	https://github.com/kriszyp/json-schema/commit/22f…	REPORT
	https://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55…	REPORT
	https://ubuntu.com/security/notices/USN-6103-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2021-3918	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "node-json-schema",
            "binary_version": "0.2.3-1+deb10u1build0.18.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "node-json-schema",
        "purl": "pkg:deb/ubuntu/node-json-schema@0.2.3-1+deb10u1build0.18.04.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.2.3-1+deb10u1build0.18.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.2.3-1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "node-json-schema",
            "binary_version": "0.2.3-1+deb10u1build0.20.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "node-json-schema",
        "purl": "pkg:deb/ubuntu/node-json-schema@0.2.3-1+deb10u1build0.20.04.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.2.3-1+deb10u1build0.20.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.2.3-1"
      ]
    }
  ],
  "aliases": [],
  "details": "json-schema is vulnerable to Improperly Controlled Modification of Object Prototype Attributes (\u0027Prototype Pollution\u0027)",
  "id": "UBUNTU-CVE-2021-3918",
  "modified": "2025-07-18T16:46:31Z",
  "published": "2021-11-13T09:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3918"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/kriszyp/json-schema/commit/22f146111f541d9737e832823699ad3528ca7741"
    },
    {
      "type": "REPORT",
      "url": "https://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55f-cd2662c261a9"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6103-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-3918"
    }
  ],
  "related": [
    "USN-6103-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-3918"
  ]
}

CVE-2021-3918 (GCVE-0-2021-3918)

Vulnerability from cvelistv5 – Published: 2021-11-13 00:00 – Updated: 2025-01-17 20:02

Title

Prototype Pollution in kriszyp/json-schema

Summary

json-schema is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Severity

9.8 (Critical)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Assigner

@huntrdev

References

4 references

URL	Tags
https://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55…
https://github.com/kriszyp/json-schema/commit/22f…
https://lists.debian.org/debian-lts-announce/2022…	mailing-list
https://security.netapp.com/advisory/ntap-2025011…

Impacted products

1 product

Vendor	Product	Version
kriszyp	kriszyp/json-schema	Affected: unspecified , ≤ 0.3.0 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-01-17T20:02:47.966Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55f-cd2662c261a9"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/kriszyp/json-schema/commit/22f146111f541d9737e832823699ad3528ca7741"
          },
          {
            "name": "[debian-lts-announce] 20221206 [SECURITY] [DLA 3228-1] node-json-schema security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00013.html"
          },
          {
            "url": "https://security.netapp.com/advisory/ntap-20250117-0004/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "kriszyp/json-schema",
          "vendor": "kriszyp",
          "versions": [
            {
              "lessThanOrEqual": "0.3.0",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "json-schema is vulnerable to Improperly Controlled Modification of Object Prototype Attributes (\u0027Prototype Pollution\u0027)"
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1321",
              "description": "CWE-1321 Improperly Controlled Modification of Object Prototype Attributes (\u0027Prototype Pollution\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-12-06T00:00:00.000Z",
        "orgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
        "shortName": "@huntrdev"
      },
      "references": [
        {
          "url": "https://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55f-cd2662c261a9"
        },
        {
          "url": "https://github.com/kriszyp/json-schema/commit/22f146111f541d9737e832823699ad3528ca7741"
        },
        {
          "name": "[debian-lts-announce] 20221206 [SECURITY] [DLA 3228-1] node-json-schema security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00013.html"
        }
      ],
      "source": {
        "advisory": "bb6ccd63-f505-4e3a-b55f-cd2662c261a9",
        "discovery": "EXTERNAL"
      },
      "title": "Prototype Pollution in kriszyp/json-schema"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
    "assignerShortName": "@huntrdev",
    "cveId": "CVE-2021-3918",
    "datePublished": "2021-11-13T00:00:00.000Z",
    "dateReserved": "2021-11-02T00:00:00.000Z",
    "dateUpdated": "2025-01-17T20:02:47.966Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

usn-6103-1

Vulnerability from osv_ubuntu

Published

2023-05-24 11:08

Modified

2026-02-10 04:43

Summary

node-json-schema vulnerability

Details

It was discovered that JSON Schema incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to exploit JavaScript runtimes and cause a denial of service or execute arbitrary code.

References

URL

Type

	https://ubuntu.com/security/notices/USN-6103-1	ADVISORY
	https://ubuntu.com/security/CVE-2021-3918	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-3918",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "node-json-schema",
            "binary_version": "0.2.3-1+deb10u1build0.18.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "node-json-schema",
        "purl": "pkg:deb/ubuntu/node-json-schema@0.2.3-1+deb10u1build0.18.04.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.2.3-1+deb10u1build0.18.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.2.3-1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-3918",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "node-json-schema",
            "binary_version": "0.2.3-1+deb10u1build0.20.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "node-json-schema",
        "purl": "pkg:deb/ubuntu/node-json-schema@0.2.3-1+deb10u1build0.20.04.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.2.3-1+deb10u1build0.20.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.2.3-1"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that JSON Schema incorrectly handled certain inputs. If a\nuser or an automated system were tricked into opening a specially crafted\ninput file, a remote attacker could possibly use this issue to exploit\nJavaScript runtimes and cause a denial of service or execute arbitrary code.\n",
  "id": "USN-6103-1",
  "modified": "2026-02-10T04:43:08Z",
  "published": "2023-05-24T11:08:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6103-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3918"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "node-json-schema vulnerability",
  "upstream": [
    "UBUNTU-CVE-2021-3918"
  ]
}

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-2021-3918

Vulnerability from osv_ubuntu

CVE-2021-3918 (GCVE-0-2021-3918)

usn-6103-1

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature