CVE-2020-7746— Prototype Pollution
Quick assessment
Affected
n/a chart.js
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
chart.js是chatjs团队的一个基于HTML5的JS图形库。 chart.js 2.9.4之前版本存在安全漏洞，该漏洞源于options参数在处理时没有被正确地清除。未检查所设置对象的键。
Possible ATT&CK Techniques 1 AI
T1552 · Unsecured Credentials
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I. Basic Information for CVE-2020-7746
Vulnerability Information
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Vulnerability Title
Prototype Pollution
Source: CVE Program / CVE List V5
Vulnerability Description
This affects the package chart.js before 2.9.4. The options parameter is not properly sanitized when it is processed. When the options are processed, the existing options (or the defaults options) are deeply merged with provided options. However, during this operation, the keys of the object being set are not checked, leading to a prototype pollution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
chart.js 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
chart.js是chatjs团队的一个基于HTML5的JS图形库。 chart.js 2.9.4之前版本存在安全漏洞，该漏洞源于options参数在处理时没有被正确地清除。未检查所设置对象的键。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | chart.js | unspecified ~ 2.9.4 | - |
|
II. Public POCs for CVE-2020-7746
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Verified env
Premium
Reproduced successfully in a real sandbox
· Below is the actual recording of building the environment and exploiting the vulnerability.
Success marker:
VULNERABLE: observed Object.prototype.polluted = PROOF_d6e0445b96e40358 — chart.js 2.9.3 deep-merges unsanitized __proto__ into Object.prototype
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III. Intelligence Information for CVE-2020-7746
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Patches & Fixes for CVE-2020-7746 (1)
-
https://github.com/chartjs/Chart.js/pull/7920 x_refsource_MISC
Vendor Advisories for CVE-2020-7746 (3)
-
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1019374 x_refsource_MISC
-
https://snyk.io/vuln/SNYK-JS-CHARTJS-1018716 x_refsource_MISC
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https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBCHARTJS-1019376 x_refsource_MISC
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