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CVE-2020-7942

Quick assessment

Affected
Puppet Puppet
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.

Puppet是美国Puppet实验室的一套基于客户端/服务器（C/S）架构的配置管理工具，它可用于管理配置文件、用户、cron任务、软件包、系统服务等。Puppet Agent是一个Puppet代理端程序。 Puppet中存在信任管理问题漏洞，该漏洞源于不正确的证书验证。远程攻击者可利用该漏洞获取敏感信息。Puppet 6.13.0之前的6.x版本，Puppet 5.5.19之前的5.5.x版本；Puppet Agent 6.13.0之前的6.x版本，Puppet Agent 5.5.19之前的5.5.x

AI Predicted 8.1 Difficulty: Moderate EPSS 0.82% · P56

Possible ATT&CK Techniques 1 AI

T1552.004 · Private Keys
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I. Basic Information for CVE-2020-7942

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Previously, Puppet operated on a model that a node with a valid certificate was entitled to all information in the system and that a compromised certificate allowed access to everything in the infrastructure. When a node's catalog falls back to the `default` node, the catalog can be retrieved for a different node by modifying facts for the Puppet run. This issue can be mitigated by setting `strict_hostname_checking = true` in `puppet.conf` on your Puppet master. Puppet 6.13.0 and 5.5.19 changes the default behavior for strict_hostname_checking from false to true. It is recommended that Puppet Open Source and Puppet Enterprise users that are not upgrading still set strict_hostname_checking to true to ensure secure behavior. Affected software versions: Puppet 6.x prior to 6.13.0 Puppet Agent 6.x prior to 6.13.0 Puppet 5.5.x prior to 5.5.19 Puppet Agent 5.5.x prior to 5.5.19 Resolved in: Puppet 6.13.0 Puppet Agent 6.13.0 Puppet 5.5.19 Puppet Agent 5.5.19
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
Puppet 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Puppet是美国Puppet实验室的一套基于客户端/服务器（C/S）架构的配置管理工具，它可用于管理配置文件、用户、cron任务、软件包、系统服务等。Puppet Agent是一个Puppet代理端程序。 Puppet中存在信任管理问题漏洞，该漏洞源于不正确的证书验证。远程攻击者可利用该漏洞获取敏感信息。Puppet 6.13.0之前的6.x版本，Puppet 5.5.19之前的5.5.x版本；Puppet Agent 6.13.0之前的6.x版本，Puppet Agent 5.5.19之前的5.5.x
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
Puppet Puppet 5.5.x prior to 5.5.19 -
Puppet Puppet Agent 5.5.x prior to 5.5.19 -

II. Public POCs for CVE-2020-7942

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2020-7942

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Other References for CVE-2020-7942 (1)

IV. Related Vulnerabilities

Same vendor: Puppet

V. Comments for CVE-2020-7942

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