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CVE-2020-1892

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.

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中存在缓冲区错误漏洞，该漏洞源于程序在JSON_parser中解码JSON时没有正确检查边界。攻击者可利用该漏洞导致信息泄露和拒绝服务。以下产品及版本受到影响：Facebook HHVM 4.45.0版本，4.44.0版本，4.43.0版本，4.42.0版本，4.41.0版本，4.40.0版本， 4.39.0版本，4.33.0

AI Predicted 7.5 Difficulty: Moderate EPSS 1.09% · P65
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I. Basic Information for CVE-2020-1892

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Insufficient boundary checks when decoding JSON in JSON_parser allows read access to out of bounds memory, potentially leading to information leak and DOS. This issue affects HHVM 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versions between 4.33.0 and 4.38.0 (inclusive), versions between 4.9.0 and 4.32.0 (inclusive), and versions prior to 4.8.7.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Facebook HHVM 缓冲区错误漏洞
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中存在缓冲区错误漏洞，该漏洞源于程序在JSON_parser中解码JSON时没有正确检查边界。攻击者可利用该漏洞导致信息泄露和拒绝服务。以下产品及版本受到影响：Facebook HHVM 4.45.0版本，4.44.0版本，4.43.0版本，4.42.0版本，4.41.0版本，4.40.0版本， 4.39.0版本，4.33.0
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 4.45.1 -

II. Public POCs for CVE-2020-1892

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III. Intelligence Information for CVE-2020-1892

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Patches & Fixes for CVE-2020-1892 (1)

Security Blog Posts for CVE-2020-1892 (1)

Same Patch Batch · Facebook · 2020-03-03 · 3 CVEs total

CVE-2020-1888 Facebook HHVM 缓冲区错误漏洞
CVE-2020-1893 Facebook HHVM 缓冲区错误漏洞

IV. Related Vulnerabilities

Same product: HHVM
Same vendor: Facebook
Same weakness: CWE-125

V. Comments for CVE-2020-1892

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