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.
Vulnerability Summary
CVSS v3 Score
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CVSS v2 Score
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS Score (Exploitation Probability)
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
Related Vulnerabilities
Same Weakness Type(CWE-290)
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Similar SeverityHIGH
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