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CVE-2020-15866

Quick assessment

Affected
n/a n/a
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.

mruby是一款Ruby语言的轻量级实现。 mruby 2.1.2-rc及之前版本中的vm.c文件的‘mrb_yield_with_class’函数存在缓冲区错误漏洞，该漏洞源于程序没有正确检查边界。远程攻击者可借助‘stack_copy’函数利用该漏洞在系统上执行任意代码。

AI Predicted 9.8 Difficulty: Moderate EPSS 2.09% · P81

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2020-15866

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
mruby through 2.1.2-rc has a heap-based buffer overflow in the mrb_yield_with_class function in vm.c because of incorrect VM stack handling. It can be triggered via the stack_copy function.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
mruby 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
mruby是一款Ruby语言的轻量级实现。 mruby 2.1.2-rc及之前版本中的vm.c文件的‘mrb_yield_with_class’函数存在缓冲区错误漏洞，该漏洞源于程序没有正确检查边界。远程攻击者可借助‘stack_copy’函数利用该漏洞在系统上执行任意代码。
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
- n/a n/a -

II. Public POCs for CVE-2020-15866

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III. Intelligence Information for CVE-2020-15866

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Mailing List Discussions for CVE-2020-15866 (1)

Other References for CVE-2020-15866 (1)

Same Patch Batch · n/a · 2020-07-21 · 16 CVEs total

CVE-2018-21036 Sails.js 输入验证错误漏洞
CVE-2020-12432 Collabora CODE WOPI API 跨站脚本漏洞
CVE-2020-15859 QEMU 资源管理错误漏洞
CVE-2020-15873 LibreNMS SQL注入漏洞
CVE-2016-7063 Pritunl-client 路径遍历漏洞
CVE-2016-7064 Pritunl-client 数据伪造问题漏洞
CVE-2020-15879 Bitwarden Server 代码问题漏洞
CVE-2020-15877 LibreNMS 安全漏洞
CVE-2020-15723 奇虎科技 360 Total Security 代码问题漏洞
CVE-2020-15722 奇虎科技 360 Total Security 代码问题漏洞
CVE-2020-14063 WordPress TC Custom JavaScript插件跨站脚本漏洞
CVE-2020-15724 奇虎科技 360 Total Security 代码问题漏洞
CVE-2020-15890 LuaJIT 缓冲区错误漏洞
CVE-2020-15889 Lua 缓冲区错误漏洞
CVE-2020-15888 Lua 资源管理错误漏洞

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

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