CVE-2020-7770 - Prototype Pollution

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CRITICAL

Prototype Pollution

Published Nov 12, 2020

9.8

CRITICAL

CVSS 3.1

EPSS 1.89%

Description

This affects the package json8 before 1.0.3. The function adds in the target object the property specified in the path, however it does not properly check the key being set, leading to a prototype pollution.

Affected products

Vendor n/a Product Json8 Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <1.0.3

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

n/a

Json8

n/a

Version	Status	Constraints
unspecified	affected	<1.0.3

Ecosystem	Package	Introduced	Fixed
npm	json8	0	1.0.3

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-1321

References (6)

https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-0999
Advisory
https://github.com/advisories/GHSA-7h43-gx24-p529
Advisory
https://github.com/sonnyp/JSON8/commit/2e890261b66cbc54ae01d0c79c71b0fd18379e7e
x_refsource_MISCPatchThird Party Advisory
https://nvd.nist.gov/vuln/detail/CVE-2020-7770
https://snyk.io/vuln/SNYK-JS-JSON8-1017116
x_refsource_MISCExploitThird Party Advisory
https://www.npmjs.com/package/json8

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-0999		Advisory
https://github.com/advisories/GHSA-7h43-gx24-p529		Advisory
https://github.com/sonnyp/JSON8/commit/2e890261b66cbc54ae01d0c79c71b0fd18379e7e		x_refsource_MISCPatchThird Party Advisory
https://nvd.nist.gov/vuln/detail/CVE-2020-7770
https://snyk.io/vuln/SNYK-JS-JSON8-1017116		x_refsource_MISCExploitThird Party Advisory
https://www.npmjs.com/package/json8