Smoothwall Express 3.1-SP4-polar-x86_64-update9 POST Request dhcp.cgi cross site scripting

Summaryinfo

A vulnerability described as problematic has been identified in Smoothwall Express 3.1-SP4-polar-x86_64-update9. Affected by this issue is some unknown functionality of the file dhcp.cgi of the component POST Request Handler. Executing a manipulation of the argument BOOT_SERVER/BOOT_FILE/BOOT_ROOT/START_ADDR/END_ADDR/DNS1/DNS2/NTP1/NTP2/WINS1/WINS2/DEFAULT_LEASE_TIME/MAX_LEASE_TIME/DOMAIN_NAME/NIS_DOMAIN/NIS1/NIS2/STATIC_HOST/STATIC_DESC/STATIC_MAC/STATIC_IP can lead to cross site scripting. The identification of this vulnerability is CVE-2019-25380. The attack may be launched remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability classified as problematic was found in Smoothwall Express 3.1-SP4-polar-x86_64-update9. This vulnerability affects an unknown code block of the file dhcp.cgi of the component POST Request Handler. The manipulation of the argument BOOT_SERVER/BOOT_FILE/BOOT_ROOT/START_ADDR/END_ADDR/DNS1/DNS2/NTP1/NTP2/WINS1/WINS2/DEFAULT_LEASE_TIME/MAX_LEASE_TIME/DOMAIN_NAME/NIS_DOMAIN/NIS1/NIS2/STATIC_HOST/STATIC_DESC/STATIC_MAC/STATIC_IP with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. CVE summarizes:

Smoothwall Express 3.1-SP4-polar-x86_64-update9 contains multiple reflected cross-site scripting vulnerabilities in the dhcp.cgi script that allow attackers to inject malicious scripts through multiple parameters. Attackers can submit POST requests to dhcp.cgi with script payloads in parameters such as BOOT_SERVER, BOOT_FILE, BOOT_ROOT, START_ADDR, END_ADDR, DNS1, DNS2, NTP1, NTP2, WINS1, WINS2, DEFAULT_LEASE_TIME, MAX_LEASE_TIME, DOMAIN_NAME, NIS_DOMAIN, NIS1, NIS2, STATIC_HOST, STATIC_DESC, STATIC_MAC, and STATIC_IP to execute arbitrary JavaScript in user browsers.

The weakness was shared by Ozer Goker as 46333. The advisory is shared for download at exploit-db.com. This vulnerability was named CVE-2019-25380 since 02/16/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1059.007.

It is possible to download the exploit 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.

Once again VulDB remains the best source for vulnerability data.

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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