CVE-2019-3799: Path Traversal in Spring Cloud Config
Summary
CVE-2019-3799: Path Traversal in Spring Cloud Config. Affects org.springframework.cloud:spring-cloud-config-server across 3 version ranges.
< 1.4.6
>= 2.0.0, < 2.0.4
>= 2.1.0, < 2.1.2
Fixed in 1.4.6, 2.0.4 or 2.1.2, depending on the release line you run. How to fix ↓
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Background
Spring Cloud Config is a module that allows applications to externalize their configuration in a centralized and versioned manner. It provides a server that serves configuration files to client applications. The vulnerability in question affects versions 1.4.x, 2.0.x, and 2.1.x of the Spring Cloud Config server. These versions allow malicious users to exploit a directory traversal vulnerability, potentially leading to unauthorized access to arbitrary configuration files.
Vulnerability Detail
The vulnerability arises from a lack of proper input validation in the spring-cloud-config-server module. By sending a specially crafted URL, an attacker can manipulate the server to serve arbitrary configuration files. This can result in unauthorized access to sensitive information or the execution of arbitrary code. The severity of this vulnerability is rated as MODERATE with a CVSS score of 6.5.
How To Fix
Fixed versions by release line
The minimum fixed version depends on the release line you run.
-
< 1.4.61.4.6 -
>= 2.0.0, < 2.0.42.0.4 -
>= 2.1.0, < 2.1.22.1.2
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Workaround
There is no known workaround for this vulnerability. It is essential to upgrade to the fixed versions to mitigate the risk.
Conclusion
The Path Traversal vulnerability in Spring Cloud Config allows attackers to access arbitrary configuration files, potentially leading to unauthorized access to sensitive information or the execution of arbitrary code. It is recommended to upgrade to the fixed versions (1.4.6, 2.0.4, or 2.1.2) to mitigate the risk. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
Spring Cloud Config is a module that allows applications to externalize their configuration in a centralized and versioned manner. It provides a server that serves configuration files to client applications.
Versions 1.4.x, 2.0.x, and 2.1.x of Spring Cloud Config are affected.
This vulnerability allows attackers to access arbitrary configuration files, potentially leading to unauthorized access to sensitive information or the execution of arbitrary code.
The severity of this vulnerability is rated as MODERATE with a CVSS score of 6.5.
There are no known workarounds for this vulnerability. It is crucial to upgrade to the fixed versions to mitigate the risk.
References
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