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CVE-2020-1916

Quick assessment

Affected
Facebook HHVM
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.

Katy Voor HHVM是 （Katy Voor）开源的一个应用软件。提供一个开放源代码的虚拟机，旨在执行用Hack编写的程序。 HHVM 存在安全漏洞，该漏洞源于传入的输入过长时，ldap转义中不正确的大小计算可能会导致整数溢出，从而导致写入越界。以下产品及版本受到影响： HHVM prior to 4.56.2, all versions between 4.57.0 and 4.78.0, 4.79.0, 4.80.0, 4.81.0, 4.82.0, 4.83.0。

AI Predicted 8.6 Difficulty: Easy EPSS 1.38% · P71

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2020-1916

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An incorrect size calculation in ldap_escape may lead to an integer overflow when overly long input is passed in, resulting in an out-of-bounds write. This issue affects HHVM prior to 4.56.2, all versions between 4.57.0 and 4.78.0, 4.79.0, 4.80.0, 4.81.0, 4.82.0, 4.83.0.
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
Katy Voor HHVM 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Katy Voor HHVM是 （Katy Voor）开源的一个应用软件。提供一个开放源代码的虚拟机，旨在执行用Hack编写的程序。 HHVM 存在安全漏洞，该漏洞源于传入的输入过长时，ldap转义中不正确的大小计算可能会导致整数溢出，从而导致写入越界。以下产品及版本受到影响： HHVM prior to 4.56.2, all versions between 4.57.0 and 4.78.0, 4.79.0, 4.80.0, 4.81.0, 4.82.0, 4.83.0。
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 HHVM 4.83.1 ~ unspecified -

II. Public POCs for CVE-2020-1916

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III. Intelligence Information for CVE-2020-1916

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Patches & Fixes for CVE-2020-1916 (1)

Security Blog Posts for CVE-2020-1916 (1)

Same Patch Batch · Facebook · 2021-03-10 · 7 CVEs total

CVE-2020-1917 Katy Voor HHVM 缓冲区错误漏洞
CVE-2020-1918 Katy Voor HHVM 缓冲区错误漏洞
CVE-2020-1919 Katy Voor HHVM 缓冲区错误漏洞
CVE-2020-1921 Katy Voor HHVM 缓冲区错误漏洞
CVE-2021-24025 Katy Voor HHVM 输入验证错误漏洞
CVE-2021-24030 Facebook Gameroom 参数注入漏洞

IV. Related Vulnerabilities

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

V. Comments for CVE-2020-1916

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