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CVE-2021-23155

Quick assessment

Affected
Gallagher Command Centre Mobile Client for Android
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.

Gallagher Command Centre Server是新西兰Gallagher公司的一个用于对建筑物内基础设施进行监控、管理的管理系统。 Gallagher 存在安全漏洞，该漏洞源于移动客户端中对云证书链的不正确验证。该漏洞允许中间人攻击冒充合法的命令中心服务器。此问题影响：Gallagher Command Center Mobile Client for Android 8.60 8.60.065 之前的版本；8.50 版和之前的版本。

CVSS 9.0 · Critical EPSS 0.48% · P39

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-23155

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Improper validation of the cloud certificate chain in Mobile Client allows man-in-the-middle attack to impersonate the legitimate Command Centre Server. This issue affects: Gallagher Command Centre Mobile Client for Android 8.60 versions prior to 8.60.065; version 8.50 and prior versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
证书信任链回溯不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Gallagher Command Centre Server 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Gallagher Command Centre Server是新西兰Gallagher公司的一个用于对建筑物内基础设施进行监控、管理的管理系统。 Gallagher 存在安全漏洞，该漏洞源于移动客户端中对云证书链的不正确验证。该漏洞允许中间人攻击冒充合法的命令中心服务器。此问题影响：Gallagher Command Center Mobile Client for Android 8.60 8.60.065 之前的版本；8.50 版和之前的版本。
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
Gallagher Command Centre Mobile Client for Android unspecified ~ 8.50 -

II. Public POCs for CVE-2021-23155

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III. Intelligence Information for CVE-2021-23155

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Same Patch Batch · Gallagher · 2021-11-18 · 6 CVEs total

CVE-2021-23167 8.1 HIGH Gallagher Command Centre Server信任管理问题漏洞
CVE-2021-23193 8.1 HIGH Gallagher Command Centre Server 信息泄露漏洞
CVE-2021-23162 7.7 HIGH Gallagher Command Centre Server 信任管理问题漏洞
CVE-2021-23146 7.1 HIGH Gallagher Command Centre 安全漏洞
CVE-2021-23197 5.2 MEDIUM Gallagher Command Centre Server 代码问题漏洞

IV. Related Vulnerabilities

Same vendor: Gallagher
Same weakness: CWE-296

V. Comments for CVE-2021-23155

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