Authentication Bypass Affecting com.alibaba.nacos:nacos-common Open this link in a new tab package, versions [,1.4.1)
Attack Complexity
High
Confidentiality
High
Integrity
High
Availability
High
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snyk-id
SNYK-JAVA-COMALIBABANACOS-1277194
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published
28 Apr 2021
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disclosed
27 Apr 2021
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credit
Unknown
Introduced: 27 Apr 2021
CVE-2021-29441 Open this link in a new tabHow to fix?
Upgrade com.alibaba.nacos:nacos-common
to version 1.4.1 or higher.
Overview
com.alibaba.nacos:nacos-common is a service discovery, configuration and service management platform for building cloud native applications.
Affected versions of this package are vulnerable to Authentication Bypass. 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.