CVE-2021-29441

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.
References
Link Resource
https://github.com/alibaba/nacos/issues/4701 Exploit Third Party Advisory
https://github.com/advisories/GHSA-36hp-jr8h-556f Exploit Third Party Advisory
https://github.com/alibaba/nacos/pull/4703 Patch Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:alibaba:nacos:*:*:*:*:*:*:*:*

Information

Published : 2021-04-27 09:15

Updated : 2021-05-07 11:09


NVD link : CVE-2021-29441

Mitre link : CVE-2021-29441

Products Affected
No products.
CWE
CWE-290

Authentication Bypass by Spoofing