CVE-2024-2053 Overview
CVE-2024-2053 is a path traversal vulnerability [CWE-23] in the Artica Proxy administrative web application. Unauthenticated attackers can bypass local file inclusion protections and retrieve arbitrary files readable by the www-data user. The issue affects Artica Proxy versions 4.40 and 4.50. KoreLogic Security published the advisory through the Full Disclosure mailing list. The vulnerability exposes sensitive configuration data, credentials stored on disk, and other files accessible to the web server account, providing attackers with reconnaissance material for follow-on attacks against the proxy appliance.
Critical Impact
Unauthenticated remote attackers can read arbitrary files from Artica Proxy 4.40 and 4.50 systems with www-data privileges, exposing credentials and configuration data.
Affected Products
- Articatech Artica Proxy 4.40.000000
- Articatech Artica Proxy 4.50.000000
- Artica Proxy administrative web application
Discovery Timeline
- 2024-03-21 - CVE-2024-2053 published to NVD
- 2024-03 - KoreLogic Security Advisory KL-001-2024-001 released via Full Disclosure mailing list
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-2053
Vulnerability Analysis
The Artica Proxy administrative web application implements filters intended to block local file inclusion (LFI) attempts. These filters are insufficient and can be bypassed using crafted path traversal sequences in unauthenticated HTTP requests. When the bypass succeeds, the application reads the requested file from disk and returns its contents in the response.
The application processes file path parameters without enforcing a strict allowlist or canonicalizing the resolved path before access. Any file readable by the www-data system account becomes accessible to the attacker. Sensitive targets include the Artica configuration database, cached credentials, SSL private key material readable by the web user, and log files containing operational telemetry.
The disclosure notes that a related deserialization issue exists in the same product surface, allowing PHP object injection that escalates to code execution as www-data. CVE-2024-2053 itself is scoped to the file disclosure primitive.
Root Cause
The root cause is improper limitation of a pathname to a restricted directory [CWE-23]. Input validation logic strips or rejects specific traversal patterns but does not normalize the final path before performing the file read. Attackers craft sequences that survive the filter and resolve outside the intended directory.
Attack Vector
Exploitation requires only network access to the Artica Proxy administrative interface. The attacker sends a single HTTP request containing the traversal payload to the vulnerable endpoint. No authentication, user interaction, or prior foothold is needed. Refer to the KoreLogic Security Advisory KL-001-2024-001 and the Full Disclosure mailing list post for the specific request structure and proof-of-concept details.
Detection Methods for CVE-2024-2053
Indicators of Compromise
- HTTP requests to the Artica Proxy administrative interface containing path traversal sequences such as ../, encoded variants (%2e%2e%2f), or null-byte tricks targeting file path parameters.
- Web server access logs showing unauthenticated requests returning the contents of /etc/passwd, /etc/shadow fragments accessible to www-data, or Artica configuration files.
- Outbound connections from the Artica Proxy host immediately after suspicious administrative-interface requests, suggesting reconnaissance pivoting.
Detection Strategies
- Inspect web server and reverse proxy logs for traversal patterns directed at the Artica administrative endpoints and alert on unauthenticated 200 responses to sensitive paths.
- Deploy web application firewall (WAF) signatures for known LFI bypass payloads referenced in the KoreLogic advisory.
- Correlate file-read anomalies on the Artica host (unusual files accessed by www-data) with HTTP request timestamps using endpoint telemetry.
Monitoring Recommendations
- Continuously monitor the Artica Proxy administrative interface for unauthenticated access attempts and rate-limit unknown sources.
- Track process and file-access behavior of the www-data account for deviations from baseline.
- Forward Artica web logs to a centralized analytics pipeline and alert on traversal indicators and bursts of 4xx/200 responses to non-standard paths.
How to Mitigate CVE-2024-2053
Immediate Actions Required
- Restrict network access to the Artica Proxy administrative interface so it is reachable only from trusted management networks or via VPN.
- Audit the Artica host for evidence of file disclosure by reviewing access logs back to the affected installation date.
- Rotate any credentials, API keys, or certificates that resided in files readable by www-data on the affected host.
- Upgrade to a vendor-released version of Artica Proxy later than 4.50 that addresses the path traversal logic.
Patch Information
No fixed version is listed in the NVD record at the time of publication. Review the KoreLogic Security Advisory KL-001-2024-001 and the Artica vendor channels for the current remediation guidance and supported upgrade path. The advisory does not list a coordinated patch release from the vendor.
Workarounds
- Place the administrative interface behind an authenticating reverse proxy or VPN gateway to remove unauthenticated network exposure.
- Apply WAF rules that block path traversal sequences and known bypass encodings on requests to the Artica administrative endpoints.
- Run the Artica Proxy service with the most restrictive filesystem permissions possible for the www-data account, removing read access to credentials and key material wherever the application permits.
- Disable or firewall the administrative web application if it is not actively required for operations.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
