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CVE-2018-6337

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和folly library都是美国Facebook公司的产品。Facebook HHVM（又名HipHop Virtual Machine）是一款能够显著提高PHP加载动态页面性能的虚拟机。folly library是一个开源C++库。 Facebook HHVM 3.26.3之前的3.26版本和folly library 2017.12.11.00版本至2018.08.09.00版本中存在安全漏洞。攻击者可利用该漏洞造成多个分叉的子进程生成多个重复或类似的结果。

AI Predicted 5.3 Difficulty: Theoretical EPSS 1.78% · P78

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2018-6337

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
folly::secureRandom will re-use a buffer between parent and child processes when fork() is called. That will result in multiple forked children producing repeat (or similar) results. This affects HHVM 3.26 prior to 3.26.3 and the folly library between v2017.12.11.00 and v2018.08.09.00.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
敏感数据的不恰当跨边界移除
Source: CVE Program / CVE List V5
Vulnerability Title
Facebook HHVM和folly library 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Facebook HHVM和folly library都是美国Facebook公司的产品。Facebook HHVM（又名HipHop Virtual Machine）是一款能够显著提高PHP加载动态页面性能的虚拟机。folly library是一个开源C++库。 Facebook HHVM 3.26.3之前的3.26版本和folly library 2017.12.11.00版本至2018.08.09.00版本中存在安全漏洞。攻击者可利用该漏洞造成多个分叉的子进程生成多个重复或类似的结果。
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 3.26.3 -
Facebook folly v2018.08.09.00 -

II. Public POCs for CVE-2018-6337

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III. Intelligence Information for CVE-2018-6337

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Patches & Fixes for CVE-2018-6337 (2)

Security Blog Posts for CVE-2018-6337 (1)

Same Patch Batch · Facebook · 2018-12-31 · 13 CVEs total

CVE-2018-6331 Buck 安全漏洞
CVE-2018-6333 Nuclide 安全漏洞
CVE-2018-6340 Facebook HHVM 缓冲区错误漏洞
CVE-2018-6341 React 跨站脚本漏洞
CVE-2018-6342 react-dev-utils 安全漏洞
CVE-2018-6343 Facebook Proxygen 安全漏洞
CVE-2018-6344 Facebook WhatsApp 缓冲区错误漏洞
CVE-2018-6346 Facebook Proxygen 安全漏洞
CVE-2018-6347 Facebook Proxygen HTTP2 Parser 安全漏洞
CVE-2018-6334 Facebook HHVM 安全漏洞
CVE-2018-6335 Facebook HHVM 安全漏洞
CVE-2018-6336 Facebook osquery 安全特征问题漏洞

IV. Related Vulnerabilities

Same product: HHVM
Same vendor: Facebook
Same weakness: CWE-212

V. Comments for CVE-2018-6337

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