CVE-2021-4115
Quick assessment
Affected
n/a polkitd
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.
polkit是一个在类 Unix操作系统中控制系统范围权限的组件。通过定义和审核权限规则，实现不同优先级进程间的通讯。 polkit 存在资源管理错误漏洞，该漏洞源于进程文件描述符耗尽，攻击者利用该漏洞允许非特权用户导致polkit崩溃。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-4115
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
There is a flaw in polkit which can allow an unprivileged user to cause polkit to crash, due to process file descriptor exhaustion. The highest threat from this vulnerability is to availability. NOTE: Polkit process outage duration is tied to the failing process being reaped and a new one being spawned
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
polkit 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
polkit是一个在类 Unix操作系统中控制系统范围权限的组件。通过定义和审核权限规则，实现不同优先级进程间的通讯。 polkit 存在资源管理错误漏洞，该漏洞源于进程文件描述符耗尽，攻击者利用该漏洞允许非特权用户导致polkit崩溃。
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 |
|---|---|---|---|---|
| - | polkitd | 0.117 | - |
|
II. Public POCs for CVE-2021-4115
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2021-4115 (2)
Exploits & Public PoCs for CVE-2021-4115 (1)
Mailing List Discussions for CVE-2021-4115 (1)
Other References for CVE-2021-4115 (2)
Same Patch Batch · n/a · 2022-02-21 · 12 CVEs total
| CVE-2022-25297 | 7.5 HIGH | Arbitrary File Write |
| CVE-2021-44141 | samba 后置链接漏洞 | |
| CVE-2022-0563 | util-linux 安全漏洞 | |
| CVE-2021-45008 | Plesk Cms 访问控制错误漏洞 | |
| CVE-2022-24553 | Zfaka 代码问题漏洞 | |
| CVE-2021-44568 | libsolv 缓冲区错误漏洞 | |
| CVE-2021-27753 | HCL Sametime 路径遍历漏洞 | |
| CVE-2021-27755 | HCL Sametime 安全漏洞 | |
| CVE-2021-27796 | Brocade Fabric OS 安全漏洞 | |
| CVE-2021-27797 | Brocade Fabric OS 信任管理问题漏洞 | |
| CVE-2022-24564 | Checkmk 跨站脚本漏洞 |
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V. Comments for CVE-2021-4115
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