Smoothwall Express 3.1-SP4-polar-x86_64-update9 POST Request xtaccess.cgi EXT/DEST_PORT/COMMENT cross site scripting

Summaryinfo

A vulnerability was found in Smoothwall Express 3.1-SP4-polar-x86_64-update9. It has been classified as problematic. This affects an unknown function of the file xtaccess.cgi of the component POST Request Handler. The manipulation of the argument EXT/DEST_PORT/COMMENT leads to cross site scripting. This vulnerability is documented as CVE-2019-25387. The attack can be initiated remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability was found in Smoothwall Express 3.1-SP4-polar-x86_64-update9. It has been rated as problematic. This issue affects an unknown code block of the file xtaccess.cgi of the component POST Request Handler. The manipulation of the argument EXT/DEST_PORT/COMMENT with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

Smoothwall Express 3.1-SP4-polar-x86_64-update9 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by submitting crafted input to the xtaccess.cgi endpoint. Attackers can inject script payloads through the EXT, DEST_PORT, or COMMENT parameters via POST requests to execute arbitrary JavaScript in victim browsers.

The weakness was released by Ozer Goker as 46333. It is possible to read the advisory at exploit-db.com. The identification of this vulnerability is CVE-2019-25387 since 02/16/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The exploit is available at exploit-db.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Smoothwall

Name

• Express

Version

• 3.1-SP4-polar-x86_64-update9

CPE 2.3info

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CPE 2.2info

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