CVE-2024-48955: NetAdmin Auth Bypass Vulnerability

CVE-2024-48955 Overview

CVE-2024-48955 is a broken access control vulnerability in NetAdmin 4.030319, an identity and access management platform. The flaw resides in the endpoint that assembles the functionality menu returned to authenticated users. The endpoint transmits menu data unencrypted and the server does not validate session authorization against the requested content. An authenticated attacker can copy the browser payload of a higher-privileged user session and gain access to functionalities beyond their assigned role. The weakness is classified as [CWE-284] Improper Access Control.

Critical Impact
Authenticated low-privilege users can escalate to administrative functionality by replaying menu-assembly responses from higher-privileged sessions.

Affected Products

NetAdmin Identity and Access Management 4.030319
Earlier 4.x builds sharing the same menu-assembly endpoint
Deployments exposing the NetAdmin web interface to authenticated users

Discovery Timeline

2024-10-29 - CVE-2024-48955 published to the National Vulnerability Database
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-48955

Vulnerability Analysis

The vulnerability originates in the NetAdmin backend endpoint responsible for assembling the client-side functionalities menu. When a user authenticates, the application requests the menu structure that defines which modules and actions the interface exposes. The server returns this structure in clear text and relies on the client to render only the appropriate options. The server does not verify that the session requesting a specific menu payload holds the corresponding authorization role.

An attacker with valid low-privilege credentials can substitute the response body with one previously observed from a privileged session. The client then renders privileged functionality and issues follow-on API calls that the backend accepts because it never re-validates authorization at the functional layer. This is a classic horizontal and vertical privilege escalation resulting from client-side trust and missing server-side authorization checks.

Root Cause

The root cause is missing server-side enforcement of session-to-role binding on the menu-assembly endpoint. Authorization decisions are effectively delegated to the browser. Because the payload is not encrypted or signed, its contents can be captured, replayed, or transplanted between sessions without integrity checks.

Attack Vector

Exploitation requires network access to the NetAdmin web application and valid credentials for a low-privilege account. The attacker observes or obtains the menu-assembly response from a higher-privileged user, injects it into their own authenticated browser session, and interacts with the newly exposed functionality. No user interaction from the victim is required beyond the initial capture of the reference payload. Refer to the GitHub CVE-2024-48955 Overview for public technical details.

Detection Methods for CVE-2024-48955

Indicators of Compromise

Authenticated sessions issuing API calls for functionalities inconsistent with the account's assigned role
Duplicate or replayed menu-assembly response payloads across different user sessions
Sudden appearance of administrative actions originating from historically low-privilege accounts
Client-side tampering artifacts such as modified DOM elements exposing hidden administrative menus

Detection Strategies

Correlate NetAdmin application logs against the authenticated user's role to flag out-of-scope endpoint calls
Compare rendered menu structure hashes per role and alert on deviations from the expected baseline
Inspect web proxy or WAF logs for identical menu-assembly response bodies delivered to accounts of different privilege tiers

Monitoring Recommendations

Enable verbose audit logging on NetAdmin authorization and menu endpoints and forward events to a centralized SIEM
Baseline each account's typical functionality usage and alert on first-time access to administrative modules
Monitor for anomalous session behavior such as privilege changes without a corresponding role update event

How to Mitigate CVE-2024-48955

Immediate Actions Required

Contact NetAdmin support to obtain a fixed build and confirm patch availability for version 4.030319
Restrict network exposure of the NetAdmin web interface to trusted management networks or VPN users
Review all NetAdmin accounts and remove unused or over-privileged users to reduce the attack surface
Rotate credentials for administrative accounts and enforce multi-factor authentication where supported

Patch Information

No vendor patch reference is listed in the NVD entry at the time of publication. Administrators should consult the NetAdmin product page and the Vulmon CVE-2024-48955 details for updated remediation guidance and contact the vendor directly for a fixed release.

Workarounds

Enforce TLS for all NetAdmin traffic to reduce passive capture of menu-assembly responses on the network
Deploy a reverse proxy or WAF rule that validates the caller's role against the requested endpoint and blocks mismatches
Segment administrative access so that low-privilege users cannot reach the same application instance as administrators
Increase session monitoring frequency and reduce session lifetime to shorten the window for payload replay

bash

# Example reverse-proxy authorization guard (pseudo-configuration)
# Reject menu-assembly responses that do not match the caller's role claim
location /netadmin/menu/assemble {
    auth_request /validate-role;
    proxy_set_header X-Session-Role $upstream_http_x_role;
    proxy_pass https://netadmin.internal;
}