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CVE-2021-24036

Quick assessment

Affected
Facebook folly
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 HHVM（又名HipHop Virtual Machine）是美国Facebook公司的一款能够显著提高PHP加载动态页面性能的虚拟机。 Facebook HHVM 存在输入验证错误漏洞，该漏洞源于在创建 IOBuf 时传递攻击者控制的大小可能会导致整数溢出，从而导致堆上的越界写入，并可能导致远程代码执行。

AI Predicted 8.8 Difficulty: Moderate EPSS 3.28% · P88

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2021-24036

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Passing an attacker controlled size when creating an IOBuf could cause integer overflow, leading to an out of bounds write on the heap with the possibility of remote code execution. This issue affects versions of folly prior to v2021.07.22.00. This issue affects HHVM versions prior to 4.80.5, all versions between 4.81.0 and 4.102.1, all versions between 4.103.0 and 4.113.0, and versions 4.114.0, 4.115.0, 4.116.0, 4.117.0, 4.118.0 and 4.118.1.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Facebook HHVM 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Facebook HHVM（又名HipHop Virtual Machine）是美国Facebook公司的一款能够显著提高PHP加载动态页面性能的虚拟机。 Facebook HHVM 存在输入验证错误漏洞，该漏洞源于在创建 IOBuf 时传递攻击者控制的大小可能会导致整数溢出，从而导致堆上的越界写入，并可能导致远程代码执行。
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 folly v2021.07.22.00 ~ unspecified -
Facebook HHVM 4.118.2 ~ unspecified -

II. Public POCs for CVE-2021-24036

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III. Intelligence Information for CVE-2021-24036

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Patches & Fixes for CVE-2021-24036 (1)

Security Blog Posts for CVE-2021-24036 (1)

Other References for CVE-2021-24036 (1)

IV. Related Vulnerabilities

Same product: folly
Same vendor: Facebook
Same weakness: CWE-122

V. Comments for CVE-2021-24036

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