CVE-2025-37729 in Cloud Enterprise
Summary
by MITRE • 10/13/2025
Improper neutralization of special elements used in a template engine in Elastic Cloud Enterprise (ECE) can lead to a malicious actor with Admin access exfiltrating sensitive information and issuing commands via a specially crafted string where Jinjava variables are evaluated.
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Analysis
by VulDB Data Team • 12/12/2025
This vulnerability exists within the template engine implementation of Elastic Cloud Enterprise version 2.15.0 and earlier, representing a critical security flaw that enables privilege escalation and data exfiltration. The issue stems from inadequate sanitization of user-supplied input when processing Jinjava template variables, allowing attackers with administrative privileges to craft malicious payloads that bypass security controls. The vulnerability specifically affects the template rendering system where user-provided strings are processed without proper validation, creating an attack surface for template injection exploits. According to CWE-74, this corresponds to improper neutralization of special elements used in a template engine, a well-documented weakness that has been exploited in numerous high-profile security incidents. The flaw allows for arbitrary code execution within the context of the administrative user's privileges, potentially enabling full system compromise.
The technical exploitation of this vulnerability requires an attacker to possess administrative access to the Elastic Cloud Enterprise environment, which significantly reduces the attack surface but does not eliminate the severity of impact. When a malicious actor crafts a specially formatted string containing Jinjava template syntax, the system evaluates this input without proper sanitization, enabling the execution of arbitrary commands or data retrieval operations. This type of vulnerability aligns with ATT&CK technique T1059.007 for command and scripting interpreter, specifically targeting the template engine as a means of code execution. The system's failure to properly validate and sanitize template variables creates a persistent risk where attacker-controlled data can be interpreted as executable code rather than mere content.
The operational impact of this vulnerability extends beyond simple data exfiltration to encompass complete system compromise and unauthorized access to sensitive information. Attackers can leverage this weakness to extract confidential data, modify system configurations, or establish persistence within the Elastic Cloud Enterprise environment. The vulnerability's presence in the template engine processing layer means that any administrative user input that gets rendered through the Jinjava system could potentially be exploited, creating a broad attack surface across multiple administrative functions. Organizations using Elastic Cloud Enterprise versions prior to 2.15.1 face significant risk as this vulnerability allows for lateral movement and privilege escalation within their infrastructure. The security implications are particularly severe given that the attack requires only administrative access rather than elevated privileges, making it more accessible to insider threats or compromised administrative accounts.
Mitigation strategies should focus on immediate patching of Elastic Cloud Enterprise to version 2.15.1 or later, which contains the necessary fixes for template input sanitization. Organizations should also implement strict input validation policies for all administrative interfaces and consider deploying additional monitoring controls to detect suspicious template processing activities. The implementation of principle of least privilege should be enforced to minimize the potential impact of compromised administrative accounts. Security teams should conduct comprehensive audits of all template processing functions and review existing administrative access controls. Additionally, organizations should consider implementing web application firewalls and runtime application self-protection mechanisms to provide defense-in-depth against similar template injection vulnerabilities. Regular security assessments of template engine implementations should be conducted to identify and remediate similar weaknesses before they can be exploited by malicious actors.