Description
A vulnerability in aimhubio/aim version 3.19.3 allows an attacker to exploit the `tarfile.extractall()` function to extract the contents of a maliciously crafted tarfile to arbitrary locations on the host server. The attacker can control `repo.path` and `run_hash` to bypass directory existence checks and extract files to unintended locations, potentially overwriting critical files. This can lead to arbitrary data being written to arbitrary locations on the remote tracking server, which could be used for further attacks such as writing a new SSH key to the target server.
EPSS Score:
0%
Comprehensive Technical Analysis of EUVD-2025-6974
1. Vulnerability Assessment and Severity Evaluation
The vulnerability in aimhubio/aim version 3.19.3, identified as EUVD-2025-6974 (CVE-2024-6829), involves the tarfile.extractall() function. This function can be exploited to extract the contents of a maliciously crafted tarfile to arbitrary locations on the host server. The attacker can manipulate repo.path and run_hash to bypass directory existence checks, leading to unintended file extraction and potential overwriting of critical files.
Severity Evaluation:
- Base Score: 9.1
- Base Score Version: 3.0
- Base Score Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
The high base score indicates a critical vulnerability due to the ease of exploitation (low complexity) and the significant impact on integrity and availability. The attack vector is network-based, requiring no user interaction or privileges, and the scope is unchanged.
2. Potential Attack Vectors and Exploitation Methods
Attack Vectors:
- Remote Code Execution (RCE): By overwriting critical system files, an attacker could execute arbitrary code on the target server.
- Data Manipulation: The attacker could overwrite configuration files or other critical data, leading to unauthorized access or data corruption.
- Privilege Escalation: By writing new SSH keys or modifying user permissions, an attacker could gain elevated privileges on the system.
Exploitation Methods:
- Crafted Tarfile: An attacker could create a specially crafted tarfile that, when extracted, places files in unintended locations.
- Directory Traversal: By manipulating
repo.pathandrun_hash, the attacker can bypass directory existence checks and perform directory traversal attacks. - File Overwriting: The attacker can overwrite critical files such as configuration files, executables, or SSH keys to gain control over the system.
3. Affected Systems and Software Versions
Affected Systems:
- Servers running
aimhubio/aimversion 3.19.3. - Any system that processes tarfiles using the vulnerable
tarfile.extractall()function.
Software Versions:
aimhubio/aimversion 3.19.3 and potentially earlier versions if they share the same codebase.
4. Recommended Mitigation Strategies
- Patching: Upgrade to a patched version of
aimhubio/aimthat addresses this vulnerability. - Input Validation: Implement strict input validation and sanitization for tarfile contents and extraction paths.
- Access Controls: Restrict access to the
tarfile.extractall()function and ensure that only trusted sources can upload tarfiles. - Monitoring: Implement monitoring and logging for file extraction operations to detect and respond to suspicious activities.
- Backup and Recovery: Regularly back up critical files and have a recovery plan in place to restore them in case of an attack.
5. Impact on European Cybersecurity Landscape
The vulnerability poses a significant risk to organizations using aimhubio/aim, particularly those in critical sectors such as finance, healthcare, and government. The potential for remote code execution and data manipulation could lead to data breaches, service disruptions, and unauthorized access to sensitive information. This underscores the need for robust cybersecurity measures and continuous monitoring to protect against such threats.
6. Technical Details for Security Professionals
Vulnerability Details:
- Function:
tarfile.extractall() - Parameters:
repo.pathandrun_hash - Exploitation: Manipulation of
repo.pathandrun_hashto bypass directory existence checks and perform directory traversal.
Detection:
- Log Analysis: Monitor logs for unusual file extraction activities and directory traversal attempts.
- File Integrity Monitoring: Use file integrity monitoring tools to detect unauthorized changes to critical files.
Response:
- Incident Response Plan: Have a well-defined incident response plan to quickly identify, contain, and remediate the vulnerability.
- Patch Management: Ensure that all systems are promptly patched and updated to the latest secure versions.
References:
By addressing this vulnerability promptly and implementing robust security measures, organizations can mitigate the risk of exploitation and protect their systems from potential attacks.