CVE-2020-29396 in Community
Summary
by MITRE • 12/23/2020
A sandboxing issue in Odoo Community 11.0 through 13.0 and Odoo Enterprise 11.0 through 13.0, when running with Python 3.6 or later, allows remote authenticated users to execute arbitrary code, leading to privilege escalation.
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Analysis
by VulDB Data Team • 06/13/2026
This vulnerability represents a critical sandboxing flaw affecting Odoo versions 11.0 through 13.0 across both community and enterprise editions when deployed with Python 3.6 or later runtime environments. The issue stems from insufficient input validation and improper execution context handling within the application's code execution mechanisms, creating a pathway for authenticated attackers to bypass security restrictions and execute arbitrary code on the target system. The vulnerability specifically manifests when the application processes user-supplied data through Python's exec or eval functions without adequate sanitization, allowing malicious payloads to be interpreted and executed within the application's runtime environment. This flaw enables remote authenticated users to escalate their privileges and gain unauthorized access to system resources, potentially leading to complete system compromise.
The technical implementation of this vulnerability involves the exploitation of Python's dynamic code execution capabilities within Odoo's framework. When legitimate users with appropriate permissions submit crafted input through various application interfaces, the system fails to properly validate or sanitize the data before processing it through Python's execution functions. This creates an environment where attacker-controlled code can be executed with the privileges of the Odoo application process, which typically operates with elevated system permissions. The vulnerability is particularly dangerous because it leverages legitimate application functionality to achieve malicious code execution, making detection more challenging and allowing attackers to operate under the guise of legitimate user activity. The flaw aligns with CWE-94, which describes improper control of generation of code, and represents a classic sandbox escape scenario where application security boundaries are violated.
From an operational perspective, this vulnerability poses significant risk to organizations using Odoo in production environments, particularly those with multiple user accounts and administrative privileges. The remote execution capability means attackers do not need physical access to the system and can exploit the vulnerability from anywhere on the network, provided they have valid user credentials. Successful exploitation can lead to complete system compromise, data exfiltration, and the establishment of persistent backdoors within the organization's infrastructure. The privilege escalation aspect means that even users with limited access can potentially elevate their privileges to administrative levels, undermining the entire access control model of the application. This vulnerability directly impacts the CIA triad by compromising confidentiality, integrity, and availability of the affected systems.
Organizations should implement immediate mitigations including applying the latest security patches provided by Odoo, implementing strict input validation and sanitization policies, and configuring proper access controls to limit user privileges. Network segmentation and monitoring should be enhanced to detect suspicious code execution patterns and unauthorized privilege escalation attempts. The implementation of web application firewalls and runtime application self-protection mechanisms can help detect and block malicious payloads before they can be processed. Additionally, regular security audits and penetration testing should be conducted to identify similar vulnerabilities in the application's codebase and ensure that proper sandboxing mechanisms are in place to prevent unauthorized code execution. Organizations should also consider implementing principle of least privilege models and regularly reviewing user access permissions to minimize potential damage from successful exploitation attempts.