CVE-2021-3918

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

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/kriszyp/json-schema/commit/22f146111f541d9737e832823699ad3528ca7741	Patch Third Party Advisory
https://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55f-cd2662c261a9	Exploit Issue Tracking Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00013.html	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:json-schema_project:json-schema:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Information

Published : 2021-11-13 01:15

Updated : 2023-02-03 11:15

NVD link : CVE-2021-3918

Mitre link : CVE-2021-3918

JSON object : View

CWE

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Products Affected

debian

debian_linux

json-schema_project

json-schema

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://github.com/kriszyp/json-schema/commit/22f146111f541d9737e832823699ad3528ca7741", "name": "https://github.com/kriszyp/json-schema/commit/22f146111f541d9737e832823699ad3528ca7741", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55f-cd2662c261a9", "name": "https://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55f-cd2662c261a9", "tags": ["Exploit", "Issue Tracking", "Patch", "Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00013.html", "name": "[debian-lts-announce] 20221206 [SECURITY] [DLA 3228-1] node-json-schema security update", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "MLIST"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "json-schema is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')"}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-1321"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-3918", "ASSIGNER": "security@huntr.dev"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "severity": "HIGH", "acInsufInfo": false, "impactScore": 6.4, "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}}, "publishedDate": "2021-11-13T09:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:json-schema_project:json-schema:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "0.4.0"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2023-02-03T19:15Z"}

9.8 /10