CVE-2024-1868 in Total Security
Summary
by MITRE • 11/23/2024
G DATA Total Security Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of G DATA Total Security. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the G DATA Backup Service. By creating a symbolic link, an attacker can abuse the service to overwrite a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-22313.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 01/04/2025
The vulnerability identified as CVE-2024-1868 represents a critical local privilege escalation flaw within G DATA Total Security software, specifically affecting the G DATA Backup Service component. This weakness enables malicious actors with low-privileged access to elevate their system privileges to the highest level possible, effectively gaining complete control over the affected system. The vulnerability stems from inadequate input validation and improper handling of file operations within the backup service functionality, creating a dangerous attack surface that can be exploited by adversaries who have already established a foothold on the target system.
The technical exploitation mechanism relies on a symbolic link attack pattern where an attacker crafts malicious symbolic links that can be manipulated by the vulnerable backup service. This particular flaw exists within the service's file handling routines where it fails to properly validate or sanitize file paths before performing operations. When the backup service processes these crafted symbolic links, it inadvertently follows them and overwrites legitimate system files with malicious content. This type of vulnerability is classified under CWE-59, which deals with improper handling of symbolic links or hard links, making it particularly dangerous due to its ability to bypass normal security controls and execute arbitrary code with elevated privileges.
The operational impact of this vulnerability is severe as it allows attackers to achieve SYSTEM-level privileges without requiring administrative credentials or complex attack vectors. Once successfully exploited, the attacker can install persistent backdoors, modify system files, access sensitive data, and potentially establish lateral movement within network environments. The vulnerability's exploitation requires only local access and low-privileged code execution, making it particularly concerning for environments where user accounts may have elevated privileges or where privilege escalation opportunities exist through other means. This flaw essentially provides a direct pathway to complete system compromise from a position of limited initial access, aligning with ATT&CK technique T1068 which covers local privilege escalation through service manipulation.
Security professionals should prioritize immediate mitigation of this vulnerability through official patches provided by G DATA, as the risk of exploitation increases with the prevalence of local access points and the relative ease of implementation. Organizations should implement additional monitoring for suspicious symbolic link creation activities and file system modifications, particularly around backup service directories. The vulnerability demonstrates the critical importance of proper privilege separation and input validation in system services, as well as the need for comprehensive security testing of backup and recovery components that often operate with elevated privileges. Network segmentation and least privilege principles should be enforced to limit the potential damage from such exploits, while regular security assessments should include examination of service configurations and file system permissions to prevent similar vulnerabilities from being introduced in other software components.