CVE-2024-13068: LimonDesk Auth Bypass Vulnerability

CVE-2024-13068 Overview

CVE-2024-13068 is an origin validation error [CWE-346] in Akinsoft LimonDesk, a Turkish helpdesk and ticketing application. The flaw allows forceful browsing, enabling unauthenticated attackers to access resources that should require authorization checks. The vulnerability affects LimonDesk versions from s1.02.14 up to but not including v1.02.17. Attackers can reach the issue over the network without privileges or user interaction. The Turkish national cyber response center (USOM) and Siber Güvenlik published advisories tracking this issue under reference TR-25-0206.

Critical Impact

Unauthenticated remote attackers can bypass origin and authorization checks to browse and interact with protected LimonDesk resources, exposing confidentiality, integrity, and availability of helpdesk data.

Affected Products

• Akinsoft LimonDesk s1.02.14 through versions prior to v1.02.17
• Deployments exposing the LimonDesk web interface to untrusted networks
• Customer-facing helpdesk portals built on vulnerable LimonDesk builds

Discovery Timeline

• 2025-09-03 - CVE-2024-13068 published to the National Vulnerability Database
• 2026-06-01 - Last updated in NVD database

Technical Details for CVE-2024-13068

Vulnerability Analysis

The vulnerability is classified as an origin validation error under [CWE-346]. LimonDesk fails to properly validate the origin or authorization context of incoming requests before serving protected resources. Attackers can therefore reach functionality intended for authenticated users by directly requesting the underlying URLs or endpoints, a class of issue known as forceful browsing. Because the application trusts request context that an attacker can manipulate, server-side authorization is effectively absent on the impacted paths. The result is partial loss of confidentiality, integrity, and availability across the helpdesk dataset.

Root Cause

LimonDesk relies on implicit trust signals such as client-supplied headers, navigation context, or session presence rather than enforcing per-request authorization. When the origin check is bypassed or absent, the server returns sensitive resources without verifying that the caller is permitted to access them. The defect persisted from build s1.02.14 until it was corrected in v1.02.17.

Attack Vector

An attacker reaches the vulnerable endpoints over the network without authentication or user interaction. Exploitation typically involves enumerating internal URLs, ticket identifiers, or administrative paths and requesting them directly. The vulnerability does not require chained primitives or specialized tooling — standard HTTP clients suffice to issue the crafted requests. See the Siber Güvenlik Security Advisory and USOM Security Notification for vendor-coordinated technical context.

No verified public proof-of-concept code is available for this issue. The advisory describes the weakness in conceptual terms rather than publishing exploitation steps.

Detection Methods for CVE-2024-13068

Indicators of Compromise

• Unauthenticated HTTP requests against LimonDesk endpoints that normally require a session cookie or bearer token.
• Sequential or enumerated access patterns targeting ticket identifiers, attachment paths, or administrative routes.
• Successful HTTP 200 responses returned to clients lacking a valid authenticated session.

Detection Strategies

• Compare authentication state in application logs against the sensitivity of the requested resource and alert on mismatches.
• Hunt for one source address requesting many distinct protected URLs within a short window, indicating enumeration.
• Inspect Referer and Origin headers on protected endpoints and flag missing or inconsistent values from external clients.

Monitoring Recommendations

• Centralize LimonDesk web access logs and forward them to a SIEM or data lake for correlation with authentication events.
• Baseline normal endpoint usage per role and trigger detections on anomalous access to administrative or back-office paths.
• Track installed LimonDesk versions across the estate and continuously surface hosts still on builds earlier than v1.02.17.

How to Mitigate CVE-2024-13068

Immediate Actions Required

• Upgrade LimonDesk to version v1.02.17 or later on every deployment.
• Inventory exposed LimonDesk instances and restrict access to trusted networks until patching completes.
• Rotate session tokens and review audit logs for unauthorized access following the upgrade.

Patch Information

Akinsoft addressed the issue in LimonDesk v1.02.17. Administrators should consult the USOM Security Notification and the corresponding Siber Güvenlik Security Advisory for vendor-supplied upgrade guidance.

Workarounds

• Place LimonDesk behind a reverse proxy or web application firewall that enforces authentication before requests reach the application.
• Restrict administrative endpoints with network access control lists, limiting them to internal management subnets or VPN clients.
• Disable any guest, anonymous, or external customer portal modes that are not strictly required while planning the upgrade.

# Example reverse proxy rule restricting LimonDesk admin paths to a trusted range
location /admin/ {
    allow 10.10.0.0/24;
    deny  all;
    proxy_pass http://limondesk_backend;
}