CVE-2020-5410 is a vulnerability in VMware Spring Cloud Config
Published on June 2, 2020
Directory Traversal with spring-cloud-config-server
Spring Cloud Config, versions 2.2.x prior to 2.2.3, versions 2.1.x prior to 2.1.9, 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 to a directory traversal attack.
Known Exploited Vulnerability
This VMware Tanzu Spring Cloud Config Directory Traversal Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Spring, by VMware Tanzu, Cloud Config contains a path traversal vulnerability which allows applications to serve arbitrary configuration files.
The following remediation steps are recommended / required by April 15, 2022: Apply updates per vendor instructions.
Vulnerability Analysis
CVE-2020-5410 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors in an automatable fashion. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.
Weakness Type
Relative Path Traversal
The software uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory. This allows attackers to traverse the file system to access files or directories that are outside of the restricted directory.
Products Associated with CVE-2020-5410
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Affected Versions
Spring by VMware Spring Cloud Config:- Version 2.1 and below 2.1.9 is affected.
- Version 2.2 and below 2.2.3 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.