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CVE-2021-29441

Type: 
Unavailable / Other
Severity: 
High
Publication date: 
04/27/2021
Last modified: 
05/07/2021
Description
Nacos is a platform designed for dynamic service discovery and configuration and service management. In Nacos before version 1.4.1, when configured to use authentication (-Dnacos.core.auth.enabled=true) Nacos uses the AuthFilter servlet filter to enforce authentication. This filter has a backdoor that enables Nacos servers to bypass this filter and therefore skip authentication checks. This mechanism relies on the user-agent HTTP header so it can be easily spoofed. This issue may allow any user to carry out any administrative tasks on the Nacos server.
Impact
Access Vector: Through network
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Partially affects on system integrity + Partially affects on system confidentiality + Partially affects on system availability
Vulnerable software and versions
  • cpe:2.3:a:alibaba:nacos:*:*:*:*:*:*:*:*
To consult the complete list of products and versions see this page
References to Advisories, Solutions, and Tools
Explanation of fields