CVE-2019-11929
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，该漏洞源于程序使用number_format格式化数字没有充分检查边界。攻击者可利用该漏洞在系统上执行任意代码。以下产品及版本受到影响：Facebook HHVM 3.30.10之前版本，4.0.0版本至4.8.5版本，4.9.0版本至4.18.2版本，4.19.0版本，4.19.1版本，4.20.0版本
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I. Basic Information for CVE-2019-11929
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Insufficient boundary checks when formatting numbers in number_format allows read/write access to out-of-bounds memory, potentially leading to remote code execution. This issue affects HHVM versions prior to 3.30.10, all versions between 4.0.0 and 4.8.5, all versions between 4.9.0 and 4.18.2, and versions 4.19.0, 4.19.1, 4.20.0, 4.20.1, 4.20.2, 4.21.0, 4.22.0, 4.23.0.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
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，该漏洞源于程序使用number_format格式化数字没有充分检查边界。攻击者可利用该漏洞在系统上执行任意代码。以下产品及版本受到影响：Facebook HHVM 3.30.10之前版本，4.0.0版本至4.8.5版本，4.9.0版本至4.18.2版本，4.19.0版本，4.19.1版本，4.20.0版本
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
II. Public POCs for CVE-2019-11929
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Patches & Fixes for CVE-2019-11929 (1)
-
https://github.com/facebook/hhvm/commit/dbeb9a56a638e3fdcef8b691c2a2967132dae692 x_refsource_CONFIRM
Security Blog Posts for CVE-2019-11929 (1)
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https://hhvm.com/blog/2019/09/25/security-update.html x_refsource_CONFIRM
Other References for CVE-2019-11929 (1)
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https://www.facebook.com/security/advisories/cve-2019-11929 x_refsource_CONFIRM
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V. Comments for CVE-2019-11929
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