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CVE-2021-29442— Authentication bypass

CVSS 8.6 · High EPSS 92.76% · P100
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I. Basic Information for CVE-2021-29442

Vulnerability Information
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Vulnerability Title
Authentication bypass
Source: NVD (National Vulnerability Database)
Vulnerability Description
Nacos is a platform designed for dynamic service discovery and configuration and service management. In Nacos before version 1.4.1, the ConfigOpsController lets the user perform management operations like querying the database or even wiping it out. While the /data/remove endpoint is properly protected with the @Secured annotation, the /derby endpoint is not protected and can be openly accessed by unauthenticated users. These endpoints are only valid when using embedded storage (derby DB) so this issue should not affect those installations using external storage (e.g. mysql)
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
关键功能的认证机制缺失
Source: NVD (National Vulnerability Database)
Vulnerability Title
Alibaba nacos 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
nacos是中国阿里巴巴（Alibaba）的一个动态服务发现、配置和服务管理平台。该软件支持基于 DNS 和基于 RPC 的服务发现，可提供提供实时健康检查，阻止服务向不健康的主机或服务实例发送请求等功能。 Nacos 存在访问控制错误漏洞，该漏洞源于ConfigOpsController允许用户执行管理操作，比如查询数据库，甚至清除数据库。
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

VendorProductAffected VersionsCPESubscribe
alibabanacos < 1.4.1 -

II. Public POCs for CVE-2021-29442

#POC DescriptionSource LinkShenlong Link
1QVD-2024-26473 && CVE-2021-29442https://github.com/VictorShem/QVD-2024-26473POC Details
2Nacos Derby命令执行漏洞利用脚本https://github.com/XiaomingX/cve-2021-29442-Nacos-Derby-rce-expPOC Details
3Nacos before version 1.4.1 is vulnerable to authentication bypass because the ConfigOpsController lets the user perform management operations like querying the database or even wiping it out. While the /data/remove endpoint is properly protected with the @Secured annotation, the /derby endpoint is not protected and can be openly accessed by unauthenticated users. These endpoints are only valid when using embedded storage (derby DB) so this issue should not affect those installations using external storage (e.g. mysql). https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-29442.yamlPOC Details
4Nonehttps://github.com/Threekiii/Awesome-POC/blob/master/%E4%BA%91%E5%AE%89%E5%85%A8%E6%BC%8F%E6%B4%9E/Nacos%20%E6%9C%AA%E6%8E%88%E6%9D%83%E6%8E%A5%E5%8F%A3%E5%91%BD%E4%BB%A4%E6%89%A7%E8%A1%8C%E6%BC%8F%E6%B4%9E%20CVE-2021-29442.mdPOC Details
5https://github.com/vulhub/vulhub/blob/master/nacos/CVE-2021-29442/README.mdPOC Details
6Nacos Derby命令执行漏洞利用脚本https://github.com/nanaao/cve-2021-29442-Nacos-Derby-rce-expPOC Details
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III. Intelligence Information for CVE-2021-29442

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IV. Related Vulnerabilities

Same product: nacos
Same vendor: alibaba
Same weakness: CWE-306

V. Comments for CVE-2021-29442

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