Vulnerability Scan Result
| Title: | Aktuelle ETW-Angebote - sommer-lauber.com |
| Description: |
| ip_address | 193.32.221.200 |
| country | DE  |
| network_name | IP-Projects GmbH & Co. KG |
| asn | AS48314 |
21/tcp | ftp | ProFTPD - |
22/tcp | ssh | OpenSSH 9.2p1 Debian 2+deb12u7 |
25/tcp | smtp | Postfix smtpd - |
53/tcp | domain | - - |
80/tcp | http | nginx - |
110/tcp | pop3 | Dovecot pop3d - |
143/tcp | imap | Dovecot imapd - |
443/tcp | https | nginx - |
465/tcp | smtp | Postfix smtpd - |
587/tcp | smtp | Postfix smtpd - |
993/tcp | imap | Dovecot imapd - |
995/tcp | pop3 | Dovecot pop3d - |
8443/tcp | https | sw-cp-server - |
| Software / Version | Category |
|---|---|
| Contao | CMS |
| jQuery 3.7.1 | JavaScript libraries |
| jQuery UI 1.13.2 | JavaScript libraries |
| Lightbox | JavaScript libraries |
| Modernizr | JavaScript libraries |
| Tablesorter | JavaScript libraries |
| Nginx | Web servers, Reverse proxies |
| PHP 8.3.30 | Programming languages |
| HSTS | Security |
Web Application Vulnerabilities
Evidence
Vulnerability description
We found the robots.txt on the target server. This file instructs web crawlers what URLs and endpoints of the web application they can visit and crawl. Website administrators often misuse this file while attempting to hide some web pages from the users.
Risk description
There is no particular security risk in having a robots.txt file. However, it's important to note that adding endpoints in it should not be considered a security measure, as this file can be directly accessed and read by anyone.
Recommendation
We recommend you to manually review the entries from robots.txt and remove the ones which lead to sensitive locations in the website (ex. administration panels, configuration files, etc).
Evidence
| URL | Evidence |
|---|---|
| https://www.sommer-lauber.com/angebote-eigentumswohnungen-etw.html | Response does not include the HTTP Content-Security-Policy security header or meta tag |
Vulnerability description
We noticed that the target application lacks the Content-Security-Policy (CSP) header in its HTTP responses. The CSP header is a security measure that instructs web browsers to enforce specific security rules, effectively preventing the exploitation of Cross-Site Scripting (XSS) vulnerabilities.
Risk description
The risk is that if the target application is vulnerable to XSS, lack of this header makes it easily exploitable by attackers.
Recommendation
Configure the Content-Security-Header to be sent with each HTTP response in order to apply the specific policies needed by the application.
Classification
| CWE | CWE-693 |
| OWASP Top 10 - 2017 | |
| OWASP Top 10 - 2021 |
Evidence
| Software / Version | Category |
|---|---|
| Contao | CMS |
| jQuery 3.7.1 | JavaScript libraries |
| jQuery UI 1.13.2 | JavaScript libraries |
| Lightbox | JavaScript libraries |
| Modernizr | JavaScript libraries |
| Tablesorter | JavaScript libraries |
| Nginx | Web servers, Reverse proxies |
| PHP 8.3.30 | Programming languages |
| HSTS | Security |
Vulnerability description
We noticed that server software and technology details are exposed, potentially aiding attackers in tailoring specific exploits against identified systems and versions.
Risk description
The risk is that an attacker could use this information to mount specific attacks against the identified software type and version.
Recommendation
We recommend you to eliminate the information which permits the identification of software platform, technology, server and operating system: HTTP server headers, HTML meta information, etc.
Evidence
| URL | Method | Parameters | Evidence |
|---|---|---|---|
| https://www.sommer-lauber.com/ | GET | Headers: User-Agent=Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36 Cookies: PHPSESSID=4qglhe3sm7uvafla0pjmikn9l7 csrf_https-contao_csrf_token=Fvxy7OfvD_zCW4gowvvmHChVqZC5l79vUwekZQhqVhA | Email Address: info@sommer-lauber.com |
Vulnerability description
We noticed that this web application exposes email addresses, which might be unintended. While not inherently a vulnerability, this information could be leveraged in social engineering or spam related activities.
Risk description
The risk is that exposed email addresses within the application could be accessed by unauthorized parties. This could lead to privacy violations, spam, phishing attacks, or other forms of misuse.
Recommendation
Compartmentalize the application to have 'safe' areas where trust boundaries can be unambiguously drawn. Do not allow email addresses to go outside of the trust boundary, and always be careful when interfacing with a compartment outside of the safe area.
Classification
| CWE | CWE-200 |
| OWASP Top 10 - 2017 | |
| OWASP Top 10 - 2021 |
Vulnerability description
We have noticed that the server is missing the security.txt file, which is considered a good practice for web security. It provides a standardized way for security researchers and the public to report security vulnerabilities or concerns by outlining the preferred method of contact and reporting procedures.
Risk description
There is no particular risk in not having a security.txt file for your server. However, this file is important because it offers a designated channel for reporting vulnerabilities and security issues.
Recommendation
We recommend you to implement the security.txt file according to the standard, in order to allow researchers or users report any security issues they find, improving the defensive mechanisms of your server.
Infrastructure Vulnerabilities
Evidence
We managed to detect a publicly accessible SSH service. Starting Nmap ( https://nmap.org ) at 2026-02-03 07:39 EET Nmap scan report for www.sommer-lauber.com (193.32.221.200) Host is up (0.0100s latency). Other addresses for www.sommer-lauber.com (not scanned): 2a0a:51c0:0:260::2 rDNS record for 193.32.221.200: root2736.premium-rootserver.net
PORT STATE SERVICE VERSION 22/tcp open ssh OpenSSH 9.2p1 Debian 2+deb12u7 (protocol 2.0) | ssh-auth-methods: | Supported authentication methods: | publickey |_ password Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel
Service detection performed. Please report any incorrect results at https://nmap.org/submit/ . Nmap done: 1 IP address (1 host up) scanned in 1.19 seconds
Vulnerability description
We found that the SSH service with username/password authentication is publicly accessible. Network administrators often use remote administration protocols to control devices like switches, routers, and other essential systems. However, allowing these services to be accessible via the Internet can increase security risks, creating potential opportunities for attacks on the organization.
Risk description
Exposing this service online with username/password authentication can enable attackers to launch authentication attacks, like guessing login credentials, and potentially gaining unauthorized access. Vulnerabilities, such as unpatched software, protocol flaws, or backdoors could also be exploited. An example is the CVE-2024-3094 (XZ Utils Backdoor) vulnerability.
Recommendation
We recommend turning off SSH with username/password authentication access over the Internet and instead using a Virtual Private Network (VPN) that mandates two-factor authentication (2FA). If the SSH service is essential for business purposes, we recommend limiting access only from designated IP addresses using a firewall. Furthermore, it is advisable to utilize SSH Public Key Authentication since it employs a key pair to verify the identity of a user or process.
Evidence
We managed to detect a publicly accessible File Transfer Protocol (FTP) service. PORT STATE SERVICE VERSION 21/tcp open ftp ProFTPD
Vulnerability description
We found that the File Transfer Protocol (FTP) service is publicly accessible. The FTP enables client systems to connect to upload and download files. Nonetheless, FTP lacks encryption for the data exchanged between the server and the client, leaving all transferred data exposed in plaintext.
Risk description
Exposing this service online can enable attackers to execute man-in-the-middle attacks, capturing sensitive user credentials and the contents of files because FTP operates without encryption. The entirety of the communication between the client and the server remains unsecured in plaintext. This acquired information could further facilitate additional attacks within the network.
Recommendation
We recommend turning off FTP access over the Internet and instead using a Virtual Private Network (VPN) that mandates two-factor authentication (2FA). If the FTP service is essential for business purposes, we recommend limiting access only from designated IP addresses using a firewall. Furthermore, utilizing SFTP (Secure File Transfer Protocol) is recommended as this protocol employs encryption to secure data transfers.
Evidence
We found insecure DNS cookie usage on the following nameservers: ns27.ns27.de, ns26.ns26.de, ns28.ns28.de
Vulnerability description
We found that the server does not implement DNS Cookies or uses them insecurely. DNS Cookies help prevent DNS-based attacks, such as spoofing and amplification attacks.
Risk description
The risk exists because without DNS Cookies, the server is vulnerable to DNS spoofing and amplification attacks. Attackers can manipulate responses or use the server in distributed denial-of-service (DDoS) attacks, compromising network availability and security.
Recommendation
We recommend enabling DNS Cookies to prevent spoofed DNS responses. Ensure proper cookie validation is implemented to mitigate DNS amplification attacks. Regularly update DNS servers to support the latest DNS security features.
Evidence
| Domain Queried | DNS Record Type | Description | Value |
|---|---|---|---|
| www.sommer-lauber.com | SPF | Sender Policy Framework | "v=spf1 mx ~all" |
Vulnerability description
We found that the Sender Policy Framework (SPF) record for the domain is configured with ~all (soft fail), which indicates that emails from unauthorized IP addresses are not explicitly denied. Instead, the recipient mail server is instructed to treat these messages with suspicion but may still accept them. This configuration may not provide enough protection against email spoofing and unauthorized email delivery, leaving the domain more vulnerable to impersonation attempts.
Risk description
The ~all directive in an SPF record allows unauthorized emails to pass through some email servers, even though they fail SPF verification. While such emails may be marked as suspicious or placed into a spam folder, not all mail servers handle soft fail conditions consistently. This creates a risk that malicious actors can spoof the domain to send phishing emails or other fraudulent communications, potentially causing damage to the organization's reputation and leading to successful social engineering attacks.
Recommendation
We recommend changing the SPF record's ~all (soft fail) directive to -all (hard fail). The -all setting tells recipient mail servers to reject emails from any IP addresses not listed in the SPF record, providing stronger protection against email spoofing. Ensure that all legitimate IP addresses and services that send emails on behalf of your domain are properly included in the SPF record before implementing this change.
Evidence
We managed to detect a publicly accessible Post Office Protocol (POP3) service. Starting Nmap ( https://nmap.org ) at 2026-02-03 07:40 EET Nmap scan report for www.sommer-lauber.com (193.32.221.200) Host is up (0.013s latency). Other addresses for www.sommer-lauber.com (not scanned): 2a0a:51c0:0:260::2 rDNS record for 193.32.221.200: root2736.premium-rootserver.net
PORT STATE SERVICE VERSION 995/tcp open ssl/pop3 Dovecot pop3d |_pop3-capabilities: USER TOP CAPA UIDL SASL(PLAIN LOGIN DIGEST-MD5 CRAM-MD5) AUTH-RESP-CODE PIPELINING APOP RESP-CODES
Service detection performed. Please report any incorrect results at https://nmap.org/submit/ . Nmap done: 1 IP address (1 host up) scanned in 7.08 seconds
Vulnerability description
We found that the Post Office Protocol (POP3) service is publicly accessible and doesn’t include STARTTLS capability. Email clients use the Post Office Protocol (POP) to download emails for user accounts. Some POP servers are initially set up to operate over an unsecured protocol. When email clients download email content through this plaintext protocol, it can pose a substantial risk to the organization's network, especially depending on which user account is set to receive the emails.
Risk description
Exposing this service online can enable attackers to conduct man-in-the-middle attacks, thereby gaining access to sensitive user credentials and the contents of emails. Given that POP3 operates via a plaintext protocol, the entirety of the data exchanged between the client and server is left unencrypted. This critical information could then be leveraged in further attacks on the organization's network.
Recommendation
We recommend turning off POP3 access over the Internet and instead using a Virtual Private Network (VPN) that mandates two-factor authentication (2FA). If the POP3 service is essential for business purposes, we recommend limiting access only from designated IP addresses using a firewall. Furthermore, activating STARTTLS capability (switching the connection to a secure communication) or utilizing Secure POP3 (POP3S) is recommended, as this protocol employs encryption.
Evidence
| Software / Version | Category |
|---|---|
| Contao | CMS |
| PHP 8.3.30 | Programming languages |
| WOW | JavaScript frameworks, Web frameworks, JavaScript graphics |
| Nginx | Web servers, Reverse proxies |
| Tablesorter | JavaScript libraries |
| Modernizr | JavaScript libraries |
| Lightbox | JavaScript libraries |
| jQuery UI | JavaScript libraries |
| jQuery | JavaScript libraries |
| HSTS | Security |
Vulnerability description
We noticed that server software and technology details are exposed, potentially aiding attackers in tailoring specific exploits against identified systems and versions.
Risk description
The risk is that an attacker could use this information to mount specific attacks against the identified software type and version.
Recommendation
We recommend you to eliminate the information which permits the identification of software platform, technology, server and operating system: HTTP server headers, HTML meta information, etc.
Evidence
| Operating System | Accuracy |
|---|---|
| Linux 5.0 - 5.4 | 96% |
Vulnerability description
OS Detection
Evidence
| Software / Version | Category |
|---|---|
| Nginx | Web servers, Reverse proxies |
Vulnerability description
We noticed that server software and technology details are exposed, potentially aiding attackers in tailoring specific exploits against identified systems and versions.
Risk description
The risk is that an attacker could use this information to mount specific attacks against the identified software type and version.
Recommendation
We recommend you to eliminate the information which permits the identification of software platform, technology, server and operating system: HTTP server headers, HTML meta information, etc.
Evidence
| Domain Queried | DNS Record Type | Description | Value |
|---|---|---|---|
| www.sommer-lauber.com | A | IPv4 address | 193.32.221.200 |
| www.sommer-lauber.com | NS | Name server | ns27.ns27.de |
| www.sommer-lauber.com | NS | Name server | ns26.ns26.de |
| www.sommer-lauber.com | NS | Name server | ns28.ns28.de |
| www.sommer-lauber.com | MX | Mail server | 10 post.fornet.de |
| www.sommer-lauber.com | SOA | Start of Authority | ns28.ns28.de. gunnar.sommer-lauber.com. 2025103002 10800 3600 604800 10800 |
| www.sommer-lauber.com | AAAA | IPv6 address | 2a0a:51c0:0:260::2 |
| www.sommer-lauber.com | TXT | Text record | "MS=ms45887438" |
| www.sommer-lauber.com | SPF | Sender Policy Framework | "v=spf1 mx ~all" |
| www.sommer-lauber.com | CNAME | Canonical name | sommer-lauber.com |
Risk description
An initial step for an attacker aiming to learn about an organization involves conducting searches on its domain names to uncover DNS records associated with the organization. This strategy aims to amass comprehensive insights into the target domain, enabling the attacker to outline the organization's external digital landscape. This gathered intelligence may subsequently serve as a foundation for launching attacks, including those based on social engineering techniques. DNS records pointing to services or servers that are no longer in use can provide an attacker with an easy entry point into the network.
Recommendation
We recommend reviewing all DNS records associated with the domain and identifying and removing unused or obsolete records.