CVE-2025-67223: Aranda Service Desk Information Disclosure

CVE-2025-67223 Overview

The Aranda File Server (AFS) component in Aranda Software Aranda Service Desk before version 8.3.12 contains a critical information disclosure vulnerability. The component stores daily activity logs with predictable names in a publicly accessible directory, allowing unauthenticated remote attackers to obtain direct virtual paths of uploaded files and bypass access controls to download sensitive documents containing personally identifiable information (PII).

Critical Impact

Unauthenticated attackers can remotely access sensitive documents containing PII by predicting log file names and exploiting the publicly accessible directory structure, potentially leading to significant data breaches and compliance violations.

Affected Products

• Aranda Software Aranda Service Desk versions prior to 8.3.12
• Aranda File Server (AFS) component

Discovery Timeline

• 2026-04-28 - CVE-2025-67223 published to NVD
• 2026-04-28 - Last updated in NVD database

Technical Details for CVE-2025-67223

Vulnerability Analysis

This vulnerability represents a classic information disclosure flaw stemming from insecure file storage practices (CWE-377). The Aranda File Server component generates daily activity logs that follow a predictable naming convention, making it trivial for attackers to enumerate and access these files without authentication.

The core issue lies in the combination of two security failures: first, the log files containing sensitive file path information are stored in a directory accessible to unauthenticated users; second, the log file naming scheme is predictable, likely based on dates or sequential patterns. This allows attackers to construct valid URLs to access logs from any given day.

Once an attacker retrieves these log files, they gain access to the virtual paths of all files uploaded through the system. With this information, the attacker can directly request these files, effectively bypassing any access controls that were intended to protect sensitive documents. Given that service desk systems commonly handle documents containing PII such as employee records, support tickets with personal data, and internal communications, the potential for data exposure is significant.

Root Cause

The vulnerability originates from insecure temporary file handling practices as classified under CWE-377 (Insecure Temporary File). The Aranda File Server fails to implement proper access controls on its logging directory and uses a predictable naming scheme for log files. This design flaw allows enumeration attacks where adversaries can systematically guess log file names and retrieve them without any authentication challenge. The exposed logs then reveal internal file paths, enabling secondary attacks to download protected documents.

Attack Vector

This vulnerability is exploitable over the network without requiring any authentication or user interaction. An attacker can remotely target the Aranda File Server by:

1. Identifying a target Aranda Service Desk installation with the vulnerable AFS component
2. Enumerating the publicly accessible logging directory
3. Predicting or brute-forcing log file names based on the date-based naming convention
4. Downloading log files to extract virtual paths of uploaded documents
5. Using the extracted paths to directly download sensitive files, bypassing intended access controls

The attack requires no privileges and can be performed entirely remotely against any exposed Aranda Service Desk installation running versions prior to 8.3.12. For additional technical details, refer to the GitHub PoC repository.

Detection Methods for CVE-2025-67223

Indicators of Compromise

• Unusual HTTP requests targeting the AFS logging directory from external IP addresses
• Multiple sequential requests attempting to access log files with date-based naming patterns
• Requests for file paths that match patterns exposed in activity logs
• Unexpected downloads of sensitive documents by unauthenticated sessions
• Web server access logs showing enumeration patterns against the logging directory

Detection Strategies

• Monitor web server access logs for repeated requests to the AFS logging directory with incremental or date-based file name variations
• Implement alerting for unauthenticated access attempts to document storage paths that are typically protected
• Deploy web application firewalls (WAF) with rules to detect enumeration attacks targeting predictable file naming patterns
• Review authentication logs for file access requests that lack valid session tokens or credentials

Monitoring Recommendations

• Enable verbose logging on the Aranda Service Desk application to capture all file access attempts
• Configure SIEM rules to correlate multiple log file access attempts within short time windows as potential enumeration attacks
• Implement file integrity monitoring on the logging directory to detect unauthorized access patterns
• Establish baseline traffic patterns for the AFS component to identify anomalous access behavior

How to Mitigate CVE-2025-67223

Immediate Actions Required

• Upgrade Aranda Service Desk to version 8.3.12 or later immediately
• Restrict access to the AFS logging directory through web server configuration until patching is complete
• Audit access logs to determine if the vulnerability has been exploited prior to remediation
• Review documents stored in the system for PII exposure and notify affected individuals if a breach is confirmed
• Implement network segmentation to limit external access to Aranda Service Desk components

Patch Information

Aranda Software has addressed this vulnerability in Aranda Service Desk version 8.3.12. Organizations should upgrade to this version or later to remediate the issue. For detailed release information, refer to the ArandaSoft AT V8 Release Notes. Additional product information is available at the ArandaSoft Service Management Overview.

Workarounds

• Configure web server access controls to deny unauthenticated requests to the AFS logging directory
• Implement authentication requirements for all file access endpoints through reverse proxy or WAF rules
• Move log files to a non-web-accessible location and update the application configuration accordingly
• Consider implementing randomized, non-predictable log file naming as an interim measure if source code modification is possible

# Example Apache configuration to restrict access to AFS logging directory
<Directory "/path/to/aranda/afs/logs">
    Order deny,allow
    Deny from all
    # Allow only from trusted management IPs
    Allow from 10.0.0.0/8
    Allow from 192.168.1.0/24
</Directory>