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CVE-2019-3842

Quick assessment

Affected
The systemd Project systemd
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.

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 v242-rc4版本中存在授权问题漏洞，该漏洞源于网络系统或产品缺乏有效的权限许可和访问控制措施。

AI Predicted 7.8 Difficulty: Moderate EPSS 1.21% · P67

Public Exploits 1

ExploitDB · 1 EDB-46743 [dos]
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I. Basic Information for CVE-2019-3842

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In systemd before v242-rc4, it was discovered that pam_systemd does not properly sanitize the environment before using the XDG_SEAT variable. It is possible for an attacker, in some particular configurations, to set a XDG_SEAT environment variable which allows for commands to be checked against polkit policies using the "allow_active" element rather than "allow_any".
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
systemd 授权问题漏洞
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 v242-rc4版本中存在授权问题漏洞，该漏洞源于网络系统或产品缺乏有效的权限许可和访问控制措施。
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
The systemd Project systemd v242-rc4 -

II. Public POCs for CVE-2019-3842

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2019-3842

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Vendor Advisories for CVE-2019-3842 (1)

Exploits & Public PoCs for CVE-2019-3842 (2)

Mailing List Discussions for CVE-2019-3842 (5)

IV. Related Vulnerabilities

Same product: systemd
Same vendor: The systemd Project
Same weakness: CWE-285

V. Comments for CVE-2019-3842

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