CVE-2021-36084
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 存在安全漏洞，该漏洞源于SELinux 3.2 中的 CIL 编译器在 __cil_verify_classperms 中有一个 use-after-free（从 __cil_verify_classpermission 和 __cil_pre_verify_helper 调用）。
Possible ATT&CK Techniques 1 AI
T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2021-36084
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 use-after-free in __cil_verify_classperms (called from __cil_verify_classpermission and __cil_pre_verify_helper).
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 资源管理错误漏洞
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 存在安全漏洞，该漏洞源于SELinux 3.2 中的 CIL 编译器在 __cil_verify_classperms 中有一个 use-after-free（从 __cil_verify_classpermission 和 __cil_pre_verify_helper 调用）。
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-2021-36084
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2021-36084 (1)
Mailing List Discussions for CVE-2021-36084 (1)
-
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/ vendor-advisory x_refsource_FEDORA
Other References for CVE-2021-36084 (2)
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https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31065 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-2021-36087 | SELinux 缓冲区错误漏洞 | |
| 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-2021-36085 | 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-2021-36084
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