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I. Basic Information for CVE-2021-3997
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in systemd. An uncontrolled recursion in systemd-tmpfiles may lead to a denial of service at boot time when too many nested directories are created in /tmp.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
未经控制的递归
Source: NVD (National Vulnerability Database)
Vulnerability Title
systemd 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
systemd是德国Lennart Poettering个人开发者的一款基于Linux的系统和服务管理器。该产品兼容了SysV和LSB的启动脚本,且提供了一个用来表示系统服务间依赖关系的框架。 systemd 存在安全漏洞,该漏洞是由于systemd-tmpfiles中不受控制的递归而存在的。本地用户可以在tmp文件夹中创建多个嵌套目录,case systemd会在系统启动时崩溃。该漏洞允许本地用户执行拒绝服务(DoS)攻击。
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
VendorProductAffected VersionsCPESubscribe
-systemd Fixed in v251-rc1 -
II. Public POCs for CVE-2021-3997
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III. Intelligence Information for CVE-2021-3997
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IV. Related Vulnerabilities
V. Comments for CVE-2021-3997

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