Netgate pfSense CE 4.1.6_25 snort_ip_reputation.php path traversal

Summaryinfo

A vulnerability identified as critical has been detected in Netgate pfSense CE 4.1.6_25. Impacted is an unknown function of the file /usr/local/www/snort/snort_ip_reputation.php. The manipulation leads to path traversal. This vulnerability is traded as CVE-2025-34173. It is possible to initiate the attack remotely. There is no exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Netgate pfSense CE 4.1.6_25 and classified as critical. This issue affects some unknown functionality of the file /usr/local/www/snort/snort_ip_reputation.php. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality. The summary by CVE is:

In pfSense CE /usr/local/www/snort/snort_ip_reputation.php, the value of the iplist parameter is not sanitized of directory traversal-related characters/strings before being used to check if a file exists. While the contents of the file cannot be read, the server reveals whether a file exists, which allows an attacker to enumerate files on the target. The attacker must be authenticated with at least "WebCfg - Services: Snort package" permissions.

The weakness was shared by Alex Williams as 16412. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2025-34173 since 04/15/2025. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

By approaching the search of inurl:usr/local/www/snort/snort_ip_reputation.php it is possible to find vulnerable targets with Google Hacking.

Applying the patch d6f462bcc446969f8955c16cfde300d5c9ab7435 is able to eliminate this problem. The bugfix is ready for download at github.com.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Firewall Software

Vendor

• Netgate

Name

• pfSense CE

Version

• 4.1.6_25

License

• open-source

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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