Vulnerability Scan Result
| Title: | Startseite - Reinigungsservice Christiansen |
| Description: | Haushalts- und Reinigungsservices in %%city%% |
| ip_address | 5.9.104.236 |
| country | DE  |
| network_name | Hetzner Online GmbH |
| asn | AS24940 |
21/tcp | ftp | ProFTPD - |
22/tcp | ssh | OpenSSH 7.6p1 Ubuntu 4ubuntu0.7 |
25/tcp | smtp | Postfix smtpd - |
53/tcp | domain | - - |
80/tcp | http | Apache httpd - |
106/tcp | tcpwrapped | - - |
110/tcp | pop3 | Dovecot pop3d - |
143/tcp | imap | Dovecot imapd - |
443/tcp | https | nginx - |
445/tcp | netbios-ssn | Samba smbd 3.X - 4.X |
465/tcp | smtp | Postfix smtpd - |
587/tcp | smtp | Postfix smtpd - |
993/tcp | imap | Dovecot imapd - |
995/tcp | pop3 | Dovecot pop3d - |
8443/tcp | https-alt | sw-cp-server - |
| Software / Version | Category |
|---|---|
| jQuery | JavaScript libraries |
| Nginx | Web servers, Reverse proxies |
| Plesk | Hosting panels |
| HSTS | Security |
Web Application Vulnerabilities
Evidence
| URL | Evidence |
|---|---|
| https://www.reinigungsservice-christiansen.de/ | 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-1021 |
| OWASP Top 10 - 2017 | |
| OWASP Top 10 - 2021 |
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.reinigungsservice-christiansen.de/ | Response headers do not include the Referrer-Policy HTTP security header as well as the |
Vulnerability description
We noticed that the target application's server responses lack the Referrer-Policy HTTP header, which controls how much referrer information the browser will send with each request originated from the current web application.
Risk description
The risk is that if a user visits a web page (e.g. "http://example.com/pricing/") and clicks on a link from that page going to e.g. "https://www.google.com", the browser will send to Google the full originating URL in the `Referer` header, assuming the Referrer-Policy header is not set. The originating URL could be considered sensitive information and it could be used for user tracking.
Recommendation
The Referrer-Policy header should be configured on the server side to avoid user tracking and inadvertent information leakage. The value `no-referrer` of this header instructs the browser to omit the Referer header entirely.
Classification
| CWE | CWE-693 |
| OWASP Top 10 - 2017 | |
| OWASP Top 10 - 2021 |
Evidence
| URL | Evidence |
|---|---|
| https://www.reinigungsservice-christiansen.de/ | Response headers do not include the X-Content-Type-Options HTTP security header |
Vulnerability description
We noticed that the target application's server responses lack the X-Content-Type-Options header. This header is particularly important for preventing Internet Explorer from reinterpreting the content of a web page (MIME-sniffing) and thus overriding the value of the Content-Type header.
Risk description
The risk is that lack of this header could make possible attacks such as Cross-Site Scripting or phishing in Internet Explorer browsers.
Recommendation
We recommend setting the X-Content-Type-Options header such as `X-Content-Type-Options: nosniff`.
Classification
| CWE | CWE-693 |
| OWASP Top 10 - 2017 | |
| OWASP Top 10 - 2021 |
Evidence
| Software / Version | Category |
|---|---|
| jQuery | JavaScript libraries |
| Nginx | Web servers, Reverse proxies |
| Plesk | Hosting panels |
| 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.
Classification
| CWE | CWE-200 |
| OWASP Top 10 - 2017 | |
| OWASP Top 10 - 2021 |
Evidence
| URL | Method | Parameters | Evidence |
|---|---|---|---|
| https://www.reinigungsservice-christiansen.de/contact-us | 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 | Email Address: info@reinigungsservice-christiansen.de |
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 |
Evidence
| URL | Method | Summary |
|---|---|---|
| https://www.reinigungsservice-christiansen.de/ | OPTIONS | We did a HTTP OPTIONS request. The server responded with a 200 status code and the header: `Allow: HEAD,GET,POST,OPTIONS` Request / Response |
Vulnerability description
We have noticed that the webserver responded with an Allow HTTP header when an OPTIONS HTTP request was sent. This method responds to requests by providing information about the methods available for the target resource.
Risk description
The only risk this might present nowadays is revealing debug HTTP methods that can be used on the server. This can present a danger if any of those methods can lead to sensitive information, like authentication information, secret keys.
Recommendation
We recommend that you check for unused HTTP methods or even better, disable the OPTIONS method. This can be done using your webserver configuration.
Classification
| CWE | CWE-16 |
| 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.
Classification
| CWE | CWE-1188 |
| OWASP Top 10 - 2017 | |
| OWASP Top 10 - 2021 |
Infrastructure Vulnerabilities
Evidence
| CVE | CVSS | EPSS Score | EPSS Percentile | CISA KEV | Summary |
|---|---|---|---|---|---|
| CVE-2020-27511 | 7.5 | 0.02455 | 0.82375 | No | An issue was discovered in the stripTags and unescapeHTML components in Prototype 1.7.3 where an attacker can cause a Regular Expression Denial of Service (ReDOS) through stripping crafted HTML tags. |
Vulnerability description
Vulnerabilities found for Prototype 1.7.3
Risk description
These vulnerabilities expose the affected applications to the risk of unauthorized access to confidential data and possibly to denial of service attacks. An attacker could search for an appropriate exploit (or create one) for any of these vulnerabilities and use it to attack the system. Notes: - The vulnerabilities are identified based on the server's version.; - Only the first 5 vulnerabilities with the highest risk are shown for each port.; Since the vulnerabilities were discovered using only version-based testing, the risk level for this finding will not exceed "high" severity. Critical risks will be assigned to vulnerabilities identified through accurate active testing methods.
Recommendation
We recommend you to upgrade the affected software to the latest version in order to eliminate the risks imposed by these vulnerabilities.
Evidence
We managed to detect a publicly accessible Windows Server Message Blocks (SMB) service. PORT STATE SERVICE VERSION 445/tcp open netbios-ssn Samba smbd 3.X - 4.X
Vulnerability description
We found that the Windows Server Message Blocks (SMB) service is publicly accessible. The Server Message Block (SMB) protocol facilitates services like file and print sharing on systems. Older SMB protocol versions operate through NetBIOS to enable application-layer networking for devices within Windows operating systems, including communication with printers and serial ports.
Risk description
Exposing this service online can enable attackers to launch authentication attacks, like guessing login credentials, potentially gaining unauthorized access. Attackers might use publicly available employee information for brute-force attacks. Vulnerabilities, such as unpatched software or protocol flaws, could also be exploited. An example is MS17-010 (EternalBlue) vulnerability. Additionally, integration with Active Directory Domain Services could allow attackers to move laterally across the network, accessing more systems and sensitive data.
Recommendation
We recommend turning off SMB access over the Internet and instead using a Virtual Private Network (VPN) that mandates two-factor authentication (2FA). Avoid permitting direct user authentication to Active Directory over the Internet to prevent attackers from engaging in password guessing or causing the lockout of legitimate domain user accounts. If the SMB service is essential for business purposes, we recommend limiting access only from designated IP addresses using a firewall.
Evidence
We managed to detect a publicly accessible SSH service. Starting Nmap ( https://nmap.org ) at 2026-06-29 07:56 EEST Nmap scan report for www.reinigungsservice-christiansen.de (5.9.104.236) Host is up (0.020s latency). rDNS record for 5.9.104.236: mail.tyr020.umtec.net
PORT STATE SERVICE VERSION 22/tcp open ssh OpenSSH 7.6p1 Ubuntu 4ubuntu0.7 (Ubuntu Linux; 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 0.99 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 found insecure DNS cookie usage on the following nameservers: ns1.vidns.de, ns2.vidns.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
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 managed to detect a publicly accessible Post Office Protocol (POP3) service. Starting Nmap ( https://nmap.org ) at 2026-06-29 07:56 EEST Nmap scan report for www.reinigungsservice-christiansen.de (5.9.104.236) Host is up (0.020s latency). rDNS record for 5.9.104.236: mail.tyr020.umtec.net
PORT STATE SERVICE VERSION 995/tcp open ssl/pop3 Dovecot pop3d |_pop3-capabilities: SASL(PLAIN LOGIN DIGEST-MD5 CRAM-MD5) RESP-CODES TOP AUTH-RESP-CODE APOP CAPA USER UIDL PIPELINING Service Info: Host: tyr020.umtec.net
Service detection performed. Please report any incorrect results at https://nmap.org/submit/ . Nmap done: 1 IP address (1 host up) scanned in 6.81 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
We managed to detect that Linux 5.4 has reached the End-of-Life (EOL).
Version detected: 5.4 End-of-life date: 2025-12-03 Latest version for the cycle: 5.4.302 This release cycle (5.4) does have long-term-support (LTS). The cycle was released on 2019-11-25 and its latest release date was 2025-12-03.
Risk description
Using end-of-life (EOL) software poses significant security risks for organizations. EOL software no longer receives updates, including critical security patches. This creates a vulnerability landscape where known and potentially new security flaws remain unaddressed, making the software an attractive target for malicious actors. Attackers can exploit these vulnerabilities to gain unauthorized access, disrupt services, or steal sensitive data. Moreover, without updates, compatibility issues arise with newer technologies, leading to operational inefficiencies and increased potential for system failures. Additionally, regulatory and compliance risks accompany the use of EOL software. Many industries have strict data protection regulations that require up-to-date software to ensure the highest security standards. Non-compliance can result in hefty fines and legal consequences. Organizations also risk damaging their reputation if a breach occurs due to outdated software, eroding customer trust and potentially leading to a loss of business. Therefore, continuing to use EOL software undermines both security posture and business integrity, necessitating timely upgrades and proactive risk management strategies.
Recommendation
To mitigate the risks associated with end-of-life (EOL) software, it's crucial to take proactive steps. Start by identifying any EOL software currently in use within your organization. Once identified, prioritize upgrading or replacing these applications with supported versions that receive regular updates and security patches. This not only helps close security gaps but also ensures better compatibility with newer technologies, enhancing overall system efficiency and reliability.Additionally, develop a comprehensive software lifecycle management plan. This plan should include regular audits to identify upcoming EOL dates and a schedule for timely updates or replacements. Train your IT staff and users about the importance of keeping software up to date and the risks associated with using outdated versions. By maintaining a proactive approach to software management, you can significantly reduce security risks, ensure compliance with industry regulations, and protect your organization's reputation and customer trust.
Evidence
| Software / Version | Category |
|---|---|
| Plesk | Hosting panels |
| Sentry | Issue trackers |
| PHP | Programming languages |
| Bootstrap 1.1 | UI frameworks |
| Nginx | Web servers, Reverse proxies |
| Google Sign-in | Authentication |
| React | JavaScript frameworks |
| RequireJS 2.3.8 | JavaScript frameworks |
| Prototype 1.7.3 | JavaScript frameworks |
| React Router 7.14.2 | JavaScript frameworks |
| Amazon Web Services | PaaS |
| core-js 3.49.0 | JavaScript libraries |
| PWA | Miscellaneous |
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.reinigungsservice-christiansen.de | A | IPv4 address | 5.9.104.236 |
| www.reinigungsservice-christiansen.de | NS | Name server | ns1.vidns.de |
| www.reinigungsservice-christiansen.de | NS | Name server | ns2.vidns.de |
| www.reinigungsservice-christiansen.de | MX | Mail server | 0 reinigungsservice-christiansen.de |
| www.reinigungsservice-christiansen.de | SOA | Start of Authority | ns2.vidns.de. marcus\.umland.umtec.net. 2026060801 10800 3600 604800 86400 |
| www.reinigungsservice-christiansen.de | SPF | Sender Policy Framework | "v=spf1 mx a a:mx-cluster.umtec.net a:border-mx-c.umtec.net a:border-mx-f.umtec.net ip4:144.76.7.56 ip4:144.76.7.34 -all" |
| www.reinigungsservice-christiansen.de | CNAME | Canonical name | reinigungsservice-christiansen.de |
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.
Evidence
| Domain Queried | DNS Record Type | Description | Value |
|---|---|---|---|
| www.reinigungsservice-christiansen.de | SPF | Sender Policy Framework | "v=spf1 mx a a:mx-cluster.umtec.net a:border-mx-c.umtec.net a:border-mx-f.umtec.net ip4:144.76.7.56 ip4:144.76.7.34 -all" |
Evidence
| Software / Version | Category |
|---|---|
| Plesk | Hosting panels |
| Nginx | Web servers, Reverse proxies |
| 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 |
|---|---|
| Windows | 100% |
Vulnerability description
OS Detection