CVE-2017-2550 in Easy Backup
Summary
by MITRE
Vulnerability in Easy Joomla Backup v3.2.4. The software creates a copy of the backup in the web root with an easily guessable filename.
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Analysis
by VulDB Data Team • 11/14/2019
The vulnerability identified as CVE-2017-2550 resides within Easy Joomla Backup version 3.2.4, representing a critical security flaw that exposes backup files to unauthorized access. This issue stems from the software's improper handling of backup file generation and storage mechanisms, creating a significant attack surface for malicious actors who can easily identify and access sensitive data.
The technical flaw manifests through predictable filename generation where the backup utility creates copies of database and file backups in the web root directory using easily guessable naming conventions. This predictable pattern allows attackers to directly access backup files through web browser navigation without requiring authentication or authorization. The vulnerability directly maps to CWE-200, which addresses the exposure of sensitive information to an unauthorized actor, and CWE-306, concerning the failure to protect against unauthorized access to protected data. The flaw represents a classic case of insecure temporary file handling and inadequate access controls for sensitive data storage.
The operational impact of this vulnerability is severe and multifaceted, as it provides attackers with immediate access to complete database dumps, user credentials, configuration files, and potentially sensitive business data. The exposed backup files typically contain full database schemas with user accounts, session information, and application configuration details that can be leveraged for further attacks. This vulnerability aligns with ATT&CK technique T1213.002, which involves accessing data through backup files, and T1078.004, concerning valid accounts used for unauthorized access. The exposure of backup files can lead to complete system compromise, data breaches, and unauthorized access to sensitive information.
Organizations running vulnerable versions of Easy Joomla Backup face significant risks including data exfiltration, system compromise, and potential regulatory violations. The vulnerability is particularly dangerous because it requires no special privileges or complex exploitation techniques to gain access to sensitive backup data. Immediate mitigation strategies include updating to the latest version of Easy Joomla Backup, implementing proper file access controls, and removing backup files from publicly accessible directories. Security measures should also include monitoring for unauthorized access attempts, implementing web application firewalls, and conducting regular security assessments to identify similar vulnerabilities in other backup systems. Additionally, organizations should establish secure backup storage practices that isolate backup files from web-accessible directories and implement proper access controls using file permissions and authentication mechanisms.