CVE-2024-42503 Overview
CVE-2024-42503 is an authenticated command injection vulnerability in the ArubaOS command line interface (CLI). An attacker with high-privilege authenticated access to the CLI can inject operating system commands that execute as a privileged user on the underlying operating system. The flaw is classified under CWE-78, Improper Neutralization of Special Elements used in an OS Command. Successful exploitation grants attackers full control over the affected device, including the ability to read sensitive configuration, tamper with network traffic, and pivot into adjacent network segments.
Critical Impact
Authenticated attackers can execute arbitrary commands as a privileged user on the underlying operating system, resulting in full compromise of the affected ArubaOS device.
Affected Products
- ArubaOS (HPE Aruba Networking)
- ArubaOS command line interface (CLI) component
- Refer to the HPE Security Advisory for the exact fixed versions
Discovery Timeline
- 2024-09-17 - CVE-2024-42503 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-42503
Vulnerability Analysis
The vulnerability resides in the ArubaOS CLI, which handles administrative commands on Aruba networking devices. Certain CLI commands fail to properly neutralize special characters supplied as arguments before passing them to the underlying operating system shell. An authenticated user who can reach the CLI can inject shell metacharacters into a vulnerable command and cause the injected payload to execute in the context of a privileged system user.
The attack requires network reachability to the CLI and valid credentials with elevated privileges. Because the CLI enforces authentication, exploitation is limited to actors who already possess admin-level access or who have obtained credentials through phishing, credential reuse, or lateral movement. Successful exploitation breaks the isolation between the CLI shell and the underlying operating system, allowing attackers to escape the restricted command environment.
Root Cause
The root cause is improper input validation and sanitization of command arguments within ArubaOS CLI handlers, mapped to [CWE-78]. Command parameters accepted from authenticated administrators are concatenated into system-level command invocations without adequate escaping or allow-listing, enabling OS command injection.
Attack Vector
The attack vector is network-based. An authenticated attacker connects to the ArubaOS CLI over management interfaces such as SSH or console access. The attacker then issues a crafted command containing shell metacharacters or command separators as arguments to a vulnerable CLI feature. The injected payload executes with the privileges of the CLI backend process on the device's operating system, bypassing the restricted CLI environment. Technical exploitation specifics are documented in the HPE Security Advisory.
Detection Methods for CVE-2024-42503
Indicators of Compromise
- Unexpected shell processes or child processes spawned by ArubaOS CLI daemons on managed devices.
- CLI audit logs showing administrative commands containing shell metacharacters such as ;, |, &, backticks, or $() in argument fields.
- Outbound network connections from the management plane of Aruba devices to unfamiliar IP addresses.
- New or modified files in system directories not associated with a documented configuration change.
Detection Strategies
- Enable and centralize ArubaOS command accounting logs, then alert on CLI arguments containing shell control characters.
- Correlate administrative authentication events with subsequent anomalous management-plane egress traffic.
- Baseline expected CLI command patterns per administrator and flag deviations, especially long or obfuscated argument strings.
Monitoring Recommendations
- Forward ArubaOS syslog and TACACS+/RADIUS accounting records to a central SIEM for correlation and retention.
- Monitor administrative session sources and alert on CLI logins from IP addresses outside approved management networks.
- Review privileged account usage on network infrastructure regularly and revoke unused credentials.
How to Mitigate CVE-2024-42503
Immediate Actions Required
- Apply the ArubaOS updates listed in the HPE Security Advisory to all affected devices.
- Rotate credentials for any account with CLI access and enforce strong, unique passwords.
- Restrict CLI access to a dedicated, segmented management network reachable only from authorized administrator workstations.
- Audit existing administrative accounts and remove privileged accounts that are unused or unnecessary.
Patch Information
HPE Aruba Networking has released fixed ArubaOS versions addressing CVE-2024-42503. Consult the vendor advisory at the HPE Security Advisory for the exact fixed builds mapped to each ArubaOS release train, and schedule upgrades according to your change-management process.
Workarounds
- Limit CLI access to a small set of trusted administrators through role-based access control until patches are applied.
- Place all management interfaces behind a jump host and enforce multi-factor authentication for administrative logins.
- Enable command accounting and continuously review logs for suspicious argument patterns on all Aruba devices pending patch deployment.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
