CVE-2024-41973: Privilege Escalation Vulnerability

CVE-2024-41973 Overview

CVE-2024-41973 is a path traversal vulnerability that allows a low-privileged remote attacker to specify an arbitrary file on the filesystem. Successful exploitation results in arbitrary file writes executed with root privileges. The flaw is tracked under CWE-35: Path Traversal and impacts integrity and availability of the affected system.

The issue was disclosed through VDE Security Advisory VDE-2024-047. An authenticated attacker with minimal privileges can leverage the flaw over the network without user interaction.

Critical Impact
Authenticated remote attackers can write arbitrary files as root, enabling privilege escalation, persistence, and full system compromise.

Affected Products

Refer to VDE Security Advisory VDE-2024-047 for the authoritative list of affected products and versions. The NVD entry does not enumerate specific Common Platform Enumeration (CPE) records at this time.

Discovery Timeline

2024-11-18 - CVE-2024-41973 published to the National Vulnerability Database (NVD)
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-41973

Vulnerability Analysis

The vulnerability originates from insufficient validation of user-supplied file paths in a privileged service component. A low-privileged authenticated user submits a file path parameter to a network-exposed interface. The service processes this input without properly canonicalizing or restricting the path to a permitted directory.

Because the file operation executes under the root account, the attacker inherits root-level write permissions for the target path. This mismatch between the requester's privilege level and the executor's privilege level is the core defect.

Attackers can overwrite system binaries, configuration files, cron jobs, or authentication files. Any of these targets can be leveraged to escalate privileges or achieve remote code execution on the host.

Root Cause

The vulnerability is classified under CWE-35: Path Traversal, specifically the multiple-dot variant. The affected component fails to normalize path components such as ../ sequences before passing the input to a privileged file write routine.

Attack Vector

Exploitation requires network access and valid low-privileged credentials on the target system. The attacker submits a crafted file path containing traversal sequences to the vulnerable interface. The privileged handler writes attacker-controlled content to the resolved path, which can reside anywhere on the filesystem.

Refer to VDE Security Advisory VDE-2024-047 for verified technical details. No public proof-of-concept exploit code is available at this time.

Detection Methods for CVE-2024-41973

Indicators of Compromise

Unexpected modifications to system files such as /etc/passwd, /etc/shadow, /etc/sudoers, or files under /etc/cron.d/
File writes originating from the vulnerable service process outside of its expected working directory
Authentication logs showing low-privileged account activity immediately preceding privileged file changes

Detection Strategies

Monitor filesystem audit logs (auditd) for write operations by the vulnerable daemon targeting paths outside its intended scope
Alert on requests containing path traversal patterns such as ../, encoded variants (%2e%2e%2f), or absolute paths in API parameters
Correlate authenticated session activity from low-privileged accounts with subsequent root-owned file modifications

Monitoring Recommendations

Deploy file integrity monitoring (FIM) on critical system directories including /etc, /root, /usr/bin, and boot configuration paths
Ingest application and system logs into a centralized SIEM for cross-source correlation of traversal attempts and file changes
Baseline normal file write behavior of the affected service and alert on deviations

How to Mitigate CVE-2024-41973

Immediate Actions Required

Apply the vendor patch referenced in VDE Security Advisory VDE-2024-047 as soon as it is available for your deployment
Restrict network access to the affected management interface using firewall rules or network segmentation
Rotate credentials for low-privileged accounts that can reach the vulnerable interface and review account inventory for unnecessary access

Patch Information

Consult VDE Security Advisory VDE-2024-047 for patch availability, fixed versions, and vendor-specific upgrade guidance. Apply updates during your next maintenance window after validating in a staging environment.

Workarounds

Limit access to the vulnerable service to trusted management networks and administrative jump hosts only
Disable the affected network interface or feature if it is not required for operational use
Enforce least-privilege access controls and disable unused low-privileged accounts on the affected system

bash

# Example: restrict access to the management interface via iptables
iptables -A INPUT -p tcp --dport <service-port> -s <trusted-mgmt-subnet> -j ACCEPT
iptables -A INPUT -p tcp --dport <service-port> -j DROP