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CVE-2020-24356— Local Privilege Escalation in cloudflared

Quick assessment

Affected
Cloudflare cloudflared
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.

cloudflared是美国cloudflare的一个云服务器安全管理平台。该平台可提供防火墙分析、缓存控制、基于角色访问等功能。 cloudflare 2020.8.1之前版本存在安全漏洞，该漏洞源于包含一个地方特权升级漏洞在Windows系统。当运行在Windows系统上,“cloudflare”搜索配置文件可以被恶意实体作为一个特权用户执行命令。版本2020.8.1修复这个问题。

CVSS 6.4 · Medium EPSS 0.35% · P26

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection
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I. Basic Information for CVE-2020-24356

Vulnerability Information
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Vulnerability Title
Local Privilege Escalation in cloudflared
Source: CVE Program / CVE List V5
Vulnerability Description
`cloudflared` versions prior to 2020.8.1 contain a local privilege escalation vulnerability on Windows systems. When run on a Windows system, `cloudflared` searches for configuration files which could be abused by a malicious entity to execute commands as a privileged user. Version 2020.8.1 fixes this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
cloudflare 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
cloudflared是美国cloudflare的一个云服务器安全管理平台。该平台可提供防火墙分析、缓存控制、基于角色访问等功能。 cloudflare 2020.8.1之前版本存在安全漏洞，该漏洞源于包含一个地方特权升级漏洞在Windows系统。当运行在Windows系统上,“cloudflare”搜索配置文件可以被恶意实体作为一个特权用户执行命令。版本2020.8.1修复这个问题。
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
Cloudflare cloudflared unspecified ~ 2020.8.1 -

II. Public POCs for CVE-2020-24356

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III. Intelligence Information for CVE-2020-24356

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Vendor Advisories for CVE-2020-24356 (1)

IV. Related Vulnerabilities

Same product: cloudflared
Same vendor: Cloudflare

V. Comments for CVE-2020-24356

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