CVE-2020-7774: Prototype Pollution
First published: Sun Oct 25 2020(Updated: )
### Overview The npm package `y18n` before versions 3.2.2, 4.0.1, and 5.0.5 is vulnerable to Prototype Pollution. ### POC ```js const y18n = require('y18n')(); y18n.setLocale('__proto__'); y18n.updateLocale({polluted: true}); console.log(polluted); // true ``` ### Recommendation Upgrade to version 3.2.2, 4.0.1, 5.0.5 or later.
Credit: report@snyk.io report@snyk.io
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/rh-nodejs12-nodejs | <0:12.19.1-2.el7 | 0:12.19.1-2.el7 |
| redhat/rh-nodejs14-nodejs | <0:14.15.4-2.el7 | 0:14.15.4-2.el7 |
| redhat/rh-nodejs10-nodejs | <0:10.23.1-2.el7 | 0:10.23.1-2.el7 |
| <3.2.2 | ||
| >=5.0.0<5.0.5 | ||
| =4.0.0 | ||
| Oracle GraalVM | =19.3.5 | |
| Oracle GraalVM | =20.3.1.2 | |
| Oracle GraalVM | =21.0.0.2 | |
| Siemens Sinec Infrastructure Network Services | <1.0.1.1 | |
| npm/y18n | >=5.0.0<5.0.5 | 5.0.5 |
| npm/y18n | =4.0.0 | 4.0.1 |
| npm/y18n | <3.2.2 | 3.2.2 |
| Y18n Project Y18n | <3.2.2 | |
| Y18n Project Y18n | >=5.0.0<5.0.5 | |
| Y18n Project Y18n | =4.0.0 | |
| redhat/nodejs-y18n | <5.0.5 | 5.0.5 |
| redhat/nodejs-y18n | <4.0.1 | 4.0.1 |
| IBM Cloud Pak for Security (CP4S) | <=1.6.0.1 | |
| IBM Cloud Pak for Security (CP4S) | <=1.6.0.0 | |
| IBM Cloud Pak for Security (CP4S) | <=1.5.0.1 | |
| IBM Cloud Pak for Security (CP4S) | <=1.5.0.0 | |
| IBM Cloud Pak for Security (CP4S) | <=1.4.0.0 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2020-7774 https://nvd.nist.gov/vuln/detail/CVE-2020-7774 https://snyk.io/vuln/SNYK-JS-Y18N-1021887
- https://bugzilla.redhat.com/show_bug.cgi?id=1898680
- https://access.redhat.com/errata/RHSA-2020:5499
- https://access.redhat.com/errata/RHSA-2021:0548
- https://access.redhat.com/errata/RHSA-2021:0551
- https://access.redhat.com/errata/RHSA-2020:5633
- https://access.redhat.com/errata/RHSA-2021:2438
- https://access.redhat.com/errata/RHSA-2021:2041
- https://access.redhat.com/errata/RHSA-2020:5305
- https://access.redhat.com/errata/RHSA-2021:0421
- https://access.redhat.com/errata/RHSA-2021:0521
- https://access.redhat.com/security/cve/cve-2020-7774
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- https://github.com/yargs/y18n/issues/96
- https://github.com/yargs/y18n/pull/108
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1038306
- https://snyk.io/vuln/SNYK-JS-Y18N-1021887
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://nvd.nist.gov/vuln/detail/CVE-2020-7774
- https://github.com/yargs/y18n/commit/a9ac604abf756dec9687be3843e2c93bfe581f25
- https://github.com/yargs/y18n/commit/90401eea9062ad498f4f792e3fff8008c4c193a3
- https://github.com/advisories/GHSA-c4w7-xm78-47vh (Advisory)
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1898681
- https://exchange.xforce.ibmcloud.com/vulnerabilities/191999
- https://www.ibm.com/support/pages/node/6453115 (Advisory)
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is CVE-2020-7774?
CVE-2020-7774 is a vulnerability in the npm package y18n that allows for Prototype Pollution.
How severe is the vulnerability CVE-2020-7774?
The severity of CVE-2020-7774 is critical, with a severity value of 9.8.
How can I fix CVE-2020-7774?
To fix CVE-2020-7774, you should upgrade to version 5.0.5 of the y18n package.
What is Prototype Pollution?
Prototype Pollution is a vulnerability that allows an attacker to modify the behavior of objects by polluting their prototype.
Where can I find more information about CVE-2020-7774?
You can find more information about CVE-2020-7774 on the NIST National Vulnerability Database website.
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