CVE-2018-7666 in ClipBucket
Summary
by MITRE
An issue was discovered in ClipBucket before 4.0.0 Release 4902. SQL injection vulnerabilities exist in the actions/vote_channel.php channelId parameter, the ajax/commonAjax.php email parameter, and the ajax/commonAjax.php username parameter.
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Analysis
by VulDB Data Team • 01/10/2020
The vulnerability identified as CVE-2018-7666 represents a critical SQL injection flaw affecting ClipBucket versions prior to 4.0.0 Release 4902. This issue manifests across multiple attack vectors within the application's core functionality, specifically targeting parameters in the actions/vote_channel.php and ajax/commonAjax.php files. The vulnerability stems from inadequate input validation and sanitization mechanisms that fail to properly escape or filter user-supplied data before incorporating it into database queries. Such weaknesses create exploitable entry points where malicious actors can inject arbitrary SQL commands through crafted input parameters.
The technical implementation of this vulnerability involves three distinct attack surfaces that collectively weaken the application's database security posture. The channelId parameter in actions/vote_channel.php represents one vector where unfiltered input directly influences database operations, while the email and username parameters in ajax/commonAjax.php provide additional pathways for SQL injection attacks. These parameters are processed without proper sanitization, allowing attackers to manipulate database queries through carefully constructed payloads that can bypass authentication, extract sensitive information, or modify database contents. The vulnerability aligns with CWE-89 which specifically addresses SQL injection flaws in software applications.
The operational impact of this vulnerability extends beyond simple data compromise to encompass potential full system takeover scenarios. Attackers exploiting these SQL injection points could gain unauthorized access to the application's database, potentially accessing user credentials, personal information, and system configuration data. The attack surface is particularly concerning because it affects core user interaction components such as voting functionality and user registration processes, making exploitation relatively straightforward for threat actors. This vulnerability directly maps to several ATT&CK techniques including T1071.005 for application layer protocol usage and T1213.002 for data from information repositories, as it enables unauthorized data access and exfiltration.
Mitigation strategies should focus on implementing comprehensive input validation and parameterized queries throughout the application codebase. All user-supplied inputs must undergo strict sanitization and validation before processing, with proper escaping mechanisms applied to prevent SQL injection attacks. The most effective remediation involves upgrading to ClipBucket version 4.0.0 Release 4902 or later, which contains the necessary security patches addressing these vulnerabilities. Additionally, implementing web application firewalls, database activity monitoring, and regular security code reviews will provide additional layers of protection against similar attacks. Organizations should also conduct thorough penetration testing and vulnerability assessments to identify potential additional attack vectors that may exist within their ClipBucket implementations.