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CVE-2021-38679— Improper Authentication in Kazoo Server

Quick assessment

Affected
QNAP Systems Inc. Kazoo Server
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.

Qnap Kazoo Server是中国威联通科技（Qnap）公司的一款服务器。 Kazoo Server 中存在授权问题漏洞，该漏洞源于产品上运行的Qnap Nas 未对用户身份做有效验证。攻击者可通过该漏洞破坏系统的安全性。以下产品及版本受到影响：Kazoo Server 4.11.22 之前版本。

CVSS 6.5 · Medium EPSS 0.74% · P52

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2021-38679

Vulnerability Information
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Vulnerability Title
Improper Authentication in Kazoo Server
Source: CVE Program / CVE List V5
Vulnerability Description
An improper authentication vulnerability has been reported to affect QNAP NAS running Kazoo Server. If exploited, this vulnerability allows attackers to compromise the security of the system. We have already fixed this vulnerability in the following versions of Kazoo Server: Kazoo Server 4.11.22 and later
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Kazoo Server 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Qnap Kazoo Server是中国威联通科技（Qnap）公司的一款服务器。 Kazoo Server 中存在授权问题漏洞，该漏洞源于产品上运行的Qnap Nas 未对用户身份做有效验证。攻击者可通过该漏洞破坏系统的安全性。以下产品及版本受到影响：Kazoo Server 4.11.22 之前版本。
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
QNAP Systems Inc. Kazoo Server unspecified ~ 4.11.22 -

II. Public POCs for CVE-2021-38679

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III. Intelligence Information for CVE-2021-38679

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Other References for CVE-2021-38679 (1)

IV. Related Vulnerabilities

Same product: Kazoo Server
Same vendor: QNAP Systems Inc.
Same weakness: CWE-287

V. Comments for CVE-2021-38679

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