Description

Spring Cloud Config, versions 2.1.x prior to 2.1.2, versions 2.0.x prior to 2.0.4, and versions 1.4.x prior to 1.4.6, and older unsupported versions allow applications to serve arbitrary configuration files through the spring-cloud-config-server module. A malicious user, or attacker, can send a request using a specially crafted URL that can lead a directory traversal attack.

Affected Spring Products and Versions

Spring Cloud Config 2.1.0 to 2.1.1
Spring Cloud Config 2.0.0 to 2.0.3
Spring Cloud Config 1.4.0 to 1.4.5
Older unsupported versions are also affected

Mitigation

Users of affected versions should apply the following mitigation:

2.1.x users should upgrade to 2.1.2
2.0.x users should upgrade to 2.0.4
1.4.x users should upgrade to 1.4.6
Older versions should upgrade to a supported branch
Note that spring-cloud-config-server should only be available on internal networks to clients that require it and it should be secured with Spring Security, this limits exposure to this vulnerability to those with internal network access and those users with proper authentication.

Credit

This issue was identified and responsibly reported by Vern ([email protected] from PingAn Galaxy Lab).

History

2019-04-16: Initial vulnerability report published.

Reporting a vulnerability

The VMware Security Response team provides a single point of contact for the reporting of security vulnerabilities in VMware Tanzu products and coordinates the process of investigating any reported vulnerabilities.

To report a security vulnerability in a VMware service or product please refer to the VMware Security Response Policy.