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CVE-2021-24044

Quick assessment

Affected
Facebook Hermes
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Facebook Hermes是美国Facebook公司的一个JavaScript引擎。该引擎针对React Native应用，去提高移动客户端应用App的性能，但是对浏览器 & Node.js 等服务端基础架构并不适用。 Facebook Hermes 中存在安全漏洞，该漏洞源于通过在非异步和非生成器 getter/setter 函数上调用 await 和 yield 的地方传递无效的 JavaScript 代码，Hermes 将调用生成器函数并在无效的 await/yield 位置上出错。由于类型混淆

AI Predicted 7.5 Difficulty: Hard EPSS 1.26% · P69

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2021-24044

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
By passing invalid javascript code where await and yield were called upon non-async and non-generator getter/setter functions, Hermes would invoke generator functions and error out on invalid await/yield positions. This could result in segmentation fault as a consequence of type confusion error, with a low chance of RCE. This issue affects Hermes versions prior to v0.10.0.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
使用不兼容类型访问资源(类型混淆)
Source: CVE Program / CVE List V5
Vulnerability Title
Facebook Hermes 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Facebook Hermes是美国Facebook公司的一个JavaScript引擎。该引擎针对React Native应用，去提高移动客户端应用App的性能，但是对浏览器 & Node.js 等服务端基础架构并不适用。 Facebook Hermes 中存在安全漏洞，该漏洞源于通过在非异步和非生成器 getter/setter 函数上调用 await 和 yield 的地方传递无效的 JavaScript 代码，Hermes 将调用生成器函数并在无效的 await/yield 位置上出错。由于类型混淆
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
Facebook Hermes 0.10.0 ~ unspecified -

II. Public POCs for CVE-2021-24044

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III. Intelligence Information for CVE-2021-24044

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Other References for CVE-2021-24044 (1)

IV. Related Vulnerabilities

Same product: Hermes
Same vendor: Facebook
Same weakness: CWE-843

V. Comments for CVE-2021-24044

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