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CVE-2023-23556

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 a6dcafe6ded8e61658b40f5699878cd19a481f80 之前版本存在安全漏洞，该漏洞源于将 BigInt 转换为 Number 错误，攻击者利用该漏洞可以执行任意代码。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.89% · P58

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2023-23556

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An error in BigInt conversion to Number in Hermes prior to commit a6dcafe6ded8e61658b40f5699878cd19a481f80 could have been used by a malicious attacker to execute arbitrary code due to an out-of-bound write. Note that this bug is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence, most React Native applications are not affected.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Facebook Hermes 缓冲区错误漏洞
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 a6dcafe6ded8e61658b40f5699878cd19a481f80 之前版本存在安全漏洞，该漏洞源于将 BigInt 转换为 Number 错误，攻击者利用该漏洞可以执行任意代码。
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 ~ a6dcafe6ded8e61658b40f5699878cd19a481f80 -

II. Public POCs for CVE-2023-23556

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III. Intelligence Information for CVE-2023-23556

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Patches & Fixes for CVE-2023-23556 (1)

Other References for CVE-2023-23556 (1)

Same Patch Batch · Facebook · 2023-05-18 · 9 CVEs total

CVE-2023-30470 Facebook Hermes 资源管理错误漏洞
CVE-2023-28753 Facebook Netconsd 缓冲区错误漏洞
CVE-2023-28081 Facebook Hermes 资源管理错误漏洞
CVE-2023-25933 Facebook Hermes 安全漏洞
CVE-2023-24833 Facebook Hermes 资源管理错误漏洞
CVE-2023-24832 Facebook Hermes 代码问题漏洞
CVE-2023-23759 fizz 安全漏洞
CVE-2023-23557 Facebook Hermes 安全漏洞

IV. Related Vulnerabilities

Same product: Hermes
Same vendor: Facebook

V. Comments for CVE-2023-23556

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