CVE-2021-23438

This affects the package mpath before 0.8.4. A type confusion vulnerability can lead to a bypass of CVE-2018-16490. In particular, the condition ignoreProperties.indexOf(parts[i]) !== -1 returns -1 if parts[i] is ['__proto__']. This is because the method that has been called if the input is an array is Array.prototype.indexOf() and not String.prototype.indexOf(). They behave differently depending on the type of the input.

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/aheckmann/mpath/commit/89402d2880d4ea3518480a8c9847c541f2d824fc	Patch Third Party Advisory
https://snyk.io/vuln/SNYK-JS-MPATH-1577289	Exploit Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1579548	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:mpath_project:mpath:*:*:*:*:*:node.js:*:*

Information

Published : 2021-09-01 12:15

Updated : 2021-09-10 08:23

NVD link : CVE-2021-23438

Mitre link : CVE-2021-23438

JSON object : View

CWE

CWE-843

Access of Resource Using Incompatible Type ('Type Confusion')

Products Affected

mpath_project

mpath

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://github.com/aheckmann/mpath/commit/89402d2880d4ea3518480a8c9847c541f2d824fc", "name": "https://github.com/aheckmann/mpath/commit/89402d2880d4ea3518480a8c9847c541f2d824fc", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://snyk.io/vuln/SNYK-JS-MPATH-1577289", "name": "https://snyk.io/vuln/SNYK-JS-MPATH-1577289", "tags": ["Exploit", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1579548", "name": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1579548", "tags": ["Exploit", "Third Party Advisory"], "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "This affects the package mpath before 0.8.4. A type confusion vulnerability can lead to a bypass of CVE-2018-16490. In particular, the condition ignoreProperties.indexOf(parts[i]) !== -1 returns -1 if parts[i] is ['__proto__']. This is because the method that has been called if the input is an array is Array.prototype.indexOf() and not String.prototype.indexOf(). They behave differently depending on the type of the input."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-843"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-23438", "ASSIGNER": "report@snyk.io"}}, "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": "2021-09-01T19:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:mpath_project:mpath:*:*:*:*:*:node.js:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "0.8.4"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2021-09-10T15:23Z"}

9.8 /10