Security Bulletin
Summary
This affects the package y18n before 3.2.2, 4.0.1 and 5.0.5. PoC by po6ix: const y18n = require('y18n')(); y18n.setLocale('__proto__'); y18n.updateLocale({polluted: true}); console.log(polluted); // true
Vulnerability Details
CVEID: CVE-2020-7774
DESCRIPTION: Node.js y18n module could allow a remote attacker to execute arbitrary code on the system, caused by a prototype pollution flaw. By sending a specially-crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 7.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/191999 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| UCV - UrbanCode Velocity | All |
Remediation/Fixes
upgrade to 2.4.2 or later
Workarounds and Mitigations
None
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References
Change History
12 Aug 2021: Initial Publication
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Document Location
Worldwide
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Document Information
Modified date:
08 July 2022
UID
ibm16602309