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CVE-2021-29441

8.6
HIGHCVSS v3.1 Base Score
93.92%
HIGH RiskEPSS (100th percentile)

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.

Published: 4/27/2021
Modified: 11/21/2024
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Vulnerability Summary

CVSS v3 Score

8.6HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

CVSS v2 Score

7.5

AV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS Score (Exploitation Probability)

93.92%HIGH Exploitation Risk
100th percentile

This vulnerability has a 93.92% probability of being exploited in the next 30 days, ranking higher than 100% of all scored CVEs.

CWE Classification

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