CVE-2021-36087
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.
SELinux是美国国家安全局（National Security Agency）的一种采用安全架构的Linux子系统，它能够让管理员更好地管控哪些人可以访问系统。 SELinux 3.2版本存在缓冲区错误漏洞，该漏洞源于SELinux 3.2中的CIL编译器在"ebitmap match any"中有一个基于堆的缓冲区溢出。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-36087
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The CIL compiler in SELinux 3.2 has a heap-based buffer over-read in ebitmap_match_any (called indirectly from cil_check_neverallow). This occurs because there is sometimes a lack of checks for invalid statements in an optional block.
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
SELinux 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SELinux是美国国家安全局（National Security Agency）的一种采用安全架构的Linux子系统，它能够让管理员更好地管控哪些人可以访问系统。 SELinux 3.2版本存在缓冲区错误漏洞，该漏洞源于SELinux 3.2中的CIL编译器在"ebitmap match any"中有一个基于堆的缓冲区溢出。
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-2021-36087
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2021-36087 (1)
Mailing List Discussions for CVE-2021-36087 (1)
-
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/ vendor-advisory x_refsource_FEDORA
Other References for CVE-2021-36087 (3)
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https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32675 x_refsource_MISC
Same Patch Batch · n/a · 2021-07-01 · 43 CVEs total
| CVE-2020-36401 | mruby 资源管理错误漏洞 | |
| CVE-2018-25018 | UnRAR 缓冲区错误漏洞 | |
| CVE-2021-36088 | Fluent Bit 资源管理错误漏洞 | |
| CVE-2021-36089 | Grok 缓冲区错误漏洞 | |
| CVE-2021-36086 | SELinux 资源管理错误漏洞 | |
| CVE-2021-36083 | KDE KImageFormats 缓冲区错误漏洞 | |
| CVE-2021-36082 | Keystone Engine 缓冲区错误漏洞 | |
| CVE-2021-36081 | tesseract 资源管理错误漏洞 | |
| CVE-2021-36080 | GNU LibreDWG 资源管理错误漏洞 | |
| CVE-2021-36084 | SELinux 资源管理错误漏洞 | |
| CVE-2020-36400 | ZeroMQ libzmq 缓冲区错误漏洞 | |
| CVE-2020-36402 | Solidity 缓冲区错误漏洞 | |
| CVE-2020-36403 | HTSlib 缓冲区错误漏洞 | |
| CVE-2020-36404 | Keystone Engine 安全漏洞 | |
| CVE-2020-36405 | Keystone Engine 资源管理错误漏洞 | |
| CVE-2020-36406 | uWebSockets 缓冲区错误漏洞 | |
| CVE-2020-36407 | libavif 缓冲区错误漏洞 | |
| CVE-2019-25048 | LibreSSL 缓冲区错误漏洞 | |
| CVE-2019-25049 | LibreSSL 缓冲区错误漏洞 | |
| CVE-2018-25017 | RawSpeed 缓冲区错误漏洞 |
Showing top 20 of 43 CVEs. View all on vendor page → →
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V. Comments for CVE-2021-36087
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