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CVE-2024-6592— WatchGuard Firebox Single Sign-On Agent Protocol Authorization Bypass

Quick assessment

Affected
WatchGuard SSO Client
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WatchGuard Authentication Gateway（WatchGuard Single Sign-On Agent）是美国WatchGuard公司的一个身份验证网关。 WatchGuard Authentication Gateway 12.10.2及之前版本存在安全漏洞，该漏洞源于在Windows和macOS上的协议通信中存在授权错误，允许攻击者进行认证绕过。

CVSS 9.3 · Critical EPSS 1.17% · P67

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 3

VendorProduct Version RangeStatus
WatchGuard SSO Agent 12.0≤ 12.10.2 affected
WatchGuard SSO Client 12.0≤ 12.7 affected
12.0≤ 12.5.4 affected
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I. Basic Information for CVE-2024-6592

Vulnerability Information
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Vulnerability Title
WatchGuard Firebox Single Sign-On Agent Protocol Authorization Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
An incorrect authorization vulnerability in the protocol communication between the WatchGuard Authentication Gateway (aka Single Sign-On Agent) on Windows and the WatchGuard Single Sign-On Client on Windows and MacOS allows an attacker with network access to forge communications to affected components. In the event an attacker has already gained network access, they could exploit this vulnerability to retrieve authenticated usernames and group memberships from the Single Sign-On Agent or send arbitrary account and group information to the Single Sign-On Agent for their host. This vulnerability cannot be used by an attacker to gain access to user credentials.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
WatchGuard Authentication Gateway 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WatchGuard Authentication Gateway（WatchGuard Single Sign-On Agent）是美国WatchGuard公司的一个身份验证网关。 WatchGuard Authentication Gateway 12.10.2及之前版本存在安全漏洞，该漏洞源于在Windows和macOS上的协议通信中存在授权错误，允许攻击者进行认证绕过。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
WatchGuard SSO Client 12.0 ~ 12.7 -
WatchGuard SSO Client 12.0 ~ 12.5.4 -
WatchGuard SSO Agent 12.0 ~ 12.10.2 -

II. Public POCs for CVE-2024-6592

# POC Description Source Link Shenlong Link
1 Client Implementation for the WatchGuard SSO Agent Protocol used for Security Research (CVE-2024-6592, CVE-2024-6593, CVE-2024-6594) https://github.com/RedTeamPentesting/watchguard-sso-client POC Details
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III. Intelligence Information for CVE-2024-6592

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Vendor Advisories for CVE-2024-6592 (2)

Same Patch Batch · WatchGuard · 2024-09-25 · 3 CVEs total

CVE-2024-6593 9.3 CRITICAL WatchGuard Firebox Single Sign-On Agent Management Interface Authentication Bypass
CVE-2024-6594 8.7 HIGH WatchGuard Firebox Single Sign-On Client Denial-of-Service

IV. Related Vulnerabilities

Same product: SSO Client
Same vendor: WatchGuard
Same weakness: CWE-306

V. Comments for CVE-2024-6592

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