CVE-2017-0360 in Tryton
Summary
by MITRE
file_open in Tryton 3.x and 4.x through 4.2.2 allows remote authenticated users with certain permissions to read arbitrary files via a "same root name but with a suffix" attack. NOTE: This vulnerability exists because of an incomplete fix for CVE-2016-1242.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 09/13/2024
The vulnerability identified as CVE-2017-0360 represents a critical file disclosure issue within the Tryton business management software suite affecting versions 3.x and 4.x through 4.2.2. This vulnerability specifically targets the file_open functionality and exploits a weakness in the file access control mechanisms that were previously thought to be addressed by a fix for CVE-2016-1242. The flaw enables authenticated attackers with specific permissions to bypass normal file access restrictions and read arbitrary files from the system, potentially exposing sensitive data and system information. The vulnerability's persistence stems from an incomplete remediation approach that failed to fully address the underlying path traversal issue.
The technical implementation of this vulnerability exploits a specific pattern in how Tryton handles file operations where the system accepts file paths that contain suffixes or modifications to root names, allowing attackers to manipulate the file access mechanism. This particular attack vector operates by crafting file paths that appear legitimate to the system but actually point to unintended locations within the file system hierarchy. The flaw essentially allows attackers to traverse directory structures beyond the intended access boundaries, leveraging the incomplete fix from the previous vulnerability to maintain persistent access to restricted files. This represents a classic path traversal vulnerability that has been partially addressed but not completely resolved.
From an operational perspective, the impact of CVE-2017-0360 extends beyond simple data exposure as it provides attackers with the capability to access system files, configuration data, and potentially sensitive business information stored within the Tryton environment. The vulnerability's remote nature means that attackers do not need physical access to the system, and the requirement for only authenticated access with specific permissions makes it particularly dangerous in environments where user accounts are properly managed but access controls are not adequately enforced. Organizations using Tryton versions affected by this vulnerability face significant risk of data breaches, regulatory compliance violations, and potential system compromise through the exposure of critical system files and business data.
The remediation approach for this vulnerability requires immediate patching of affected Tryton installations to the latest available versions that contain a complete fix for both CVE-2016-1242 and CVE-2017-0360. Organizations should implement comprehensive access control measures to limit the permissions of authenticated users and ensure that only necessary file access operations are permitted. Security monitoring should be enhanced to detect unusual file access patterns and potential exploitation attempts. The vulnerability aligns with CWE-22 Path Traversal and follows ATT&CK techniques related to privilege escalation and credential access through file system manipulation. Network segmentation and application-level firewalls should be deployed to limit the attack surface and prevent unauthorized access to the Tryton application and its underlying file systems.