CVE-2020-2170 in RapidDeploy Plugin
Summary
by MITRE
Jenkins RapidDeploy Plugin 4.2 and earlier does not escape package names in the table of packages obtained from a remote server, resulting in a stored XSS vulnerability.
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Analysis
by VulDB Data Team • 03/26/2020
The Jenkins RapidDeploy Plugin vulnerability identified as CVE-2020-2170 represents a critical stored cross-site scripting flaw that affects versions 4.2 and earlier of the plugin. This vulnerability stems from inadequate input sanitization within the plugin's handling of package names retrieved from remote servers. When the plugin displays package information in a table format, it fails to properly escape or sanitize the package names before rendering them in the user interface, creating an environment where maliciously crafted package names can be executed as scripts within the context of authenticated users' browsers.
The technical implementation of this vulnerability occurs at the presentation layer where package names obtained from remote repositories are directly incorporated into HTML table structures without proper HTML escaping mechanisms. This flaw allows attackers to inject malicious JavaScript code within package names that gets executed when other users view the package table. The vulnerability is classified as a stored XSS issue because the malicious payload is persisted in the plugin's data storage and executed whenever the affected page is loaded, rather than requiring immediate user interaction with a malicious link. According to CWE classification, this corresponds to CWE-79 which details improper neutralization of input during web page generation, specifically within the context of HTML table rendering.
The operational impact of this vulnerability extends beyond simple script execution as it enables attackers to perform a wide range of malicious activities including session hijacking, credential theft, and redirection to malicious sites. An attacker who can influence package names in a remote repository can craft payloads that exploit this vulnerability when system administrators or developers view the package tables in Jenkins. The attack requires minimal user interaction since the malicious code executes automatically when the vulnerable page is accessed, making it particularly dangerous in environments where multiple users regularly access package information. This vulnerability also aligns with ATT&CK technique T1059.001 which covers command and scripting interpreter execution, as the stored XSS allows for arbitrary code execution within user browsers.
Organizations utilizing Jenkins with the RapidDeploy plugin are at significant risk when using vulnerable versions, as the attack surface includes any user who can view package information or has access to the plugin's package management features. The vulnerability is particularly concerning in enterprise environments where Jenkins serves as a central deployment platform and multiple teams interact with package repositories. Mitigation strategies should include immediate upgrading to plugin versions that address the XSS vulnerability, implementing proper input validation and output escaping mechanisms, and establishing network segmentation to limit access to package repositories. Additionally, organizations should consider implementing content security policies and regular security assessments of their Jenkins plugins to prevent similar vulnerabilities from being exploited in other components of their deployment infrastructure.