CVE-2021-29441

Summary

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.

Affected Software

VendorProductVersion RangeStatus
alibabanacos< 1.4.1affected

Weaknesses

  • CWE-290: CWE-290 Authentication Bypass by Spoofing

ADP Enrichment

CVE Program Container

Additional References

References