CVE-2017-20102 in Album Lock
Summary
by MITRE • 06/27/2022
A vulnerability was found in Album Lock 4.0 and classified as critical. Affected by this issue is some unknown functionality of the file /getImage. The manipulation of the argument filePaht leads to path traversal. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 06/27/2022
This critical vulnerability in Album Lock 4.0 represents a path traversal flaw that fundamentally compromises the application's file system security boundaries. The vulnerability specifically affects the /getImage endpoint where the filePaht parameter is processed without adequate input validation or sanitization. When an attacker crafts malicious input to manipulate this parameter, they can traverse the file system directory structure beyond the intended boundaries, potentially accessing sensitive files, configuration data, or system resources that should remain protected. This type of vulnerability falls under CWE-22 Path Traversal and aligns with ATT&CK technique T1059.007 Command and Scripting Interpreter for executing malicious commands through file system manipulation.
The operational impact of this vulnerability is particularly concerning given that local attack access is required, suggesting that the threat actor must already have some level of system presence or user privileges to exploit the flaw. However, once achieved, the path traversal capability allows for extensive reconnaissance and potential data exfiltration, as attackers can navigate to arbitrary file locations within the application's file system. The fact that this exploit has been publicly disclosed increases the risk profile significantly, as it removes the element of exploit novelty and makes the vulnerability immediately actionable by threat actors. The vulnerability's classification as critical indicates that it can lead to complete system compromise or unauthorized access to sensitive data, making it a high-priority target for remediation.
Local exploitation requirements for this vulnerability suggest that attackers may need to have already established a foothold through other means such as legitimate user access, privilege escalation, or social engineering attacks. The path traversal mechanism can potentially expose configuration files, database credentials, application source code, or other sensitive artifacts that are stored within the application's directory structure. Security practitioners should consider this vulnerability in the context of broader attack chains where initial access is gained through different vectors, and then this path traversal flaw is leveraged to expand the attack surface. The combination of a critical severity rating with public exploit availability creates an urgent need for immediate remediation, as organizations may be vulnerable to automated attacks that target this specific weakness. Organizations should implement proper input validation, file path sanitization, and access controls to prevent unauthorized file system navigation and ensure that the application maintains proper isolation between its internal components and the underlying operating system.