CVE-2021-23558 : The package bmoor before 0.10.1 are vulnerable to Prototype Pollution due to mis

The package bmoor before 0.10.1 are vulnerable to Prototype Pollution due to missing sanitization in set function. **Note:** This vulnerability derives from an incomplete fix in [CVE-2020-7736](https://security.snyk.io/vuln/SNYK-JS-BMOOR-598664)

Published 2022-01-28 22:15:09

Updated 2022-02-04 02:06:57

Source Snyk

View at NVD, CVE.org

Products affected by CVE-2021-23558

Bmoor Project » Bmoor » For Node.js
Versions before (<) 0.10.1
cpe:2.3:a:bmoor_project:bmoor:*:*:*:*:*:node.js:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2021-23558

EPSS FAQ

0.64%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 68 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-23558

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	10.0	6.4	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High
7.3	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L	3.9	3.4	Snyk
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: Low Integrity: Low Availability: Low

CWE ids for CVE-2021-23558

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

The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-23558

https://snyk.io/vuln/SNYK-JS-BMOOR-2342622

Prototype Pollution in bmoor | CVE-2021-23558 | Snyk
Exploit;Third Party Advisory
https://github.com/b-heilman/bmoor/commit/29b0162cc1dc1791fc060891f568b0ae29bc542b

fix: bug with [__proto__] · b-heilman/bmoor@29b0162 · GitHub
Patch;Third Party Advisory
https://snyk.io/blog/remediate-javascript-type-confusion-bypassed-input-validation/

JavaScript type confusion: Bypassed input validation (and how to remediate) | Snyk
Third Party Advisory

CVEs referencing this url

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Vulnerability Details : CVE-2021-23558

Products affected by CVE-2021-23558

Exploit prediction scoring system (EPSS) score for CVE-2021-23558

CVSS scores for CVE-2021-23558

CWE ids for CVE-2021-23558

References for CVE-2021-23558