CVE-2021-29441
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.
How to fix
- alibaba nacos1.4.1 or later
- com.alibaba.nacos:nacos-common1.4.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| alibaba nacos | v < 1.4.1 | 1.4.1 |
| com.alibaba.nacos:nacos-commonMaven | v < 1.4.1 | 1.4.1 |
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Attack Surface Management
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