Vulnerability Scan Result
| Title: | Elektrotec - Ihr Elektriker aus Burgdorf für die Region Hannover |
| Description: | Elektrotec ist ihr Elektriker aus Burgdorf für Kundendienst, Beratung, Planung, KNX, Beleuchtung, Datennetzwerke, Telekomunikation, Sicherheitstechnik, Elektromobilität, E-Check... |
| ip_address | 213.109.162.50 |
| country | DE  |
| network_name | netcup GmbH |
| asn | AS197540 |
22/tcp | ssh | OpenSSH 7.4p1 Debian 10+deb9u6 |
25/tcp | smtp | Postfix smtpd - |
80/tcp | http | - - |
110/tcp | pop3 | Dovecot pop3d - |
143/tcp | imap | Dovecot imapd - |
443/tcp | https | - - |
465/tcp | smtp | Postfix smtpd - |
587/tcp | smtp | Postfix smtpd - |
993/tcp | imaps | - - |
995/tcp | pop3s | - - |
8000/tcp | http | Nagios NSCA - |
9000/tcp | http | - - |
| Software / Version | Category |
|---|---|
| Material Design Lite | UI frameworks |
| jQuery 3.4.1 | JavaScript libraries |
Web Application Vulnerabilities
Evidence
| CVE | CVSS | EPSS Score | EPSS Percentile | Summary |
|---|---|---|---|---|
| CVE-2020-11023 | 6.9 | 0.32845 | 0.96755 | In jQuery versions greater than or equal to 1.0.3 and before 3.5.0, passing HTML containing <option> elements from untrusted sources - even after sanitizing it - to one of jQuery's DOM manipulation methods (i.e. .html(), .append(), and others) may execute untrusted code. This problem is patched in jQuery 3.5.0. |
| CVE-2020-11022 | 6.9 | 0.19031 | 0.95145 | In jQuery versions greater than or equal to 1.2 and before 3.5.0, passing HTML from untrusted sources - even after sanitizing it - to one of jQuery's DOM manipulation methods (i.e. .html(), .append(), and others) may execute untrusted code. This problem is patched in jQuery 3.5.0. |
Vulnerability description
Outdated or vulnerable software components include versions of server-side software that are no longer supported or have known, publicly disclosed vulnerabilities. Using outdated software significantly increases the attack surface of a system and may allow unauthorized access, data leaks, or service disruptions. Vulnerabilities in these components are often well-documented and actively exploited by attackers. Without security patches or vendor support, any weaknesses remain unmitigated, exposing the application to risks. In some cases, even after patching, the reported version may remain unchanged, requiring manual verification.
Risk description
The risk is that an attacker could search for an appropriate exploit (or create one himself) for any of these vulnerabilities and use it to attack the system. 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
In order to eliminate the risk of these vulnerabilities, we recommend you check the installed software version and upgrade to the latest version.
Classification
| CWE | CWE-1035 |
| OWASP Top 10 - 2017 | |
| OWASP Top 10 - 2021 |
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://elektrotec24.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-693 |
| OWASP Top 10 - 2017 | |
| OWASP Top 10 - 2021 |
Evidence
| Software / Version | Category |
|---|---|
| Material Design Lite | UI frameworks |
| jQuery 3.4.1 | JavaScript libraries |
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 | Evidence |
|---|---|
| https://elektrotec24.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
| URL | Evidence |
|---|---|
| https://elektrotec24.de/ | Response headers do not include the HTTP Strict-Transport-Security header |
Vulnerability description
We noticed that the target application lacks the HTTP Strict-Transport-Security header in its responses. This security header is crucial as it instructs browsers to only establish secure (HTTPS) connections with the web server and reject any HTTP connections.
Risk description
The risk is that lack of this header permits an attacker to force a victim user to initiate a clear-text HTTP connection to the server, thus opening the possibility to eavesdrop on the network traffic and extract sensitive information (e.g. session cookies).
Recommendation
The Strict-Transport-Security HTTP header should be sent with each HTTPS response. The syntax is as follows: `Strict-Transport-Security: max-age=<seconds>[; includeSubDomains]` The parameter `max-age` gives the time frame for requirement of HTTPS in seconds and should be chosen quite high, e.g. several months. A value below 7776000 is considered as too low by this scanner check. The flag `includeSubDomains` defines that the policy applies also for sub domains of the sender of the response.
Classification
| CWE | CWE-693 |
| OWASP Top 10 - 2017 | |
| OWASP Top 10 - 2021 |
Evidence
| URL | Evidence |
|---|---|
| https://elektrotec24.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 |
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
| Domain Queried | DNS Record Type | Description | Value |
|---|---|---|---|
| _dmarc.elektrotec24.de | TXT | Text record | "v=DMARC1; p=reject; rua=mailto:mailauth-reports@elektrotec24.de" |
Vulnerability description
We found that the DMARC record for the domain is not configured with sp policy, meaning that no policy is enforced for subdomains. When a DMARC record does not include a subdomain policy (sp directive), subdomains are not explicitly covered by the main domain's DMARC policy. This means that emails sent from subdomains (e.g., sub.example.com) may not be subject to the same DMARC enforcement as the main domain (example.com). As a result, attackers could potentially spoof emails from subdomains without being blocked or flagged, even if the main domain has a strict DMARC policy.
Risk description
Without a subdomain policy (sp directive) in the DMARC record, subdomains are not protected by the same DMARC enforcement as the main domain, leaving them vulnerable to spoofing attacks. This inconsistency can be exploited by attackers to send phishing emails from subdomains, undermining the organization’s overall email security.
Recommendation
To mitigate the risk, we recommend configuring the DMARC record with a subdomain policy by adding the sp=reject or sp=quarantine directive. This will extend DMARC enforcement to all subdomains, preventing spoofing attempts and maintaining consistent security across both the main domain and its subdomains.
Evidence
| DKIM selector | Key type | Key size | Value |
|---|---|---|---|
| dkim | rsa | 1362 | "v=DKIM1;k=rsa;t=s;s=email;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwaBwqkJfeOWUwBn3DGHM//KxbyWcGvOC33i9vRxkNB39P9Ly3tH4tpG98tyFdKzNHfcuRJaLh0nmKngZmNjXHzbf96Soq1T32tiscmMPDC+plID8exmhx01ZZXO0GcR7HaKwKKQayoEOSIetSeTehaAm88XXqb0aRgkzbaSalCS1iwuSPNhhgTh" "ZuDrnkStjQv2Wz9BsORg4/zilC2ovuZtxU5IoDNoLlU5xvUes5aaubrVTUgWNEQkgRirA4yNS8nXvTfsUbuDrCldzij12Q06o8vGKCLrqxfJzh4mTlE7oI4FgL9ogjqmwGNC3nzDwn6VM8Bj003zBLn+xZgLTBQIDAQAB" |
| rsa | 1296 | "k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDeMVIzrCa3T14JsNY0IRv5/2V1/v2itlviLQBwXsa7shBD6TrBkswsFUToPyMRWC9tbR/5ey0nRBH0ZVxp+lsmTxid2Y2z+FApQ6ra2VsXfbJP3HE6wAO0YTVEJt1TmeczhEd2Jiz/fcabIISgXEdSpTYJhb0ct0VJRxcg4c8c7wIDAQAB" |
Vulnerability description
We found that the DKIM record uses common selectors. The use of common DKIM selectors such as default, test, dkim, or mail may indicate a lack of proper customization or key management. Attackers often target domains using such selectors because they suggest that the domain is relying on default configurations, which could be less secure and easier to exploit. This can increase the risk of DKIM key exposure or misuse.
Risk description
Using a common DKIM selector makes it easier for attackers to predict and exploit email authentication weaknesses. Attackers may attempt to find corresponding DKIM keys or improperly managed records associated with common selectors. If a common selector is coupled with a weak key length or poor key management practices, it significantly increases the likelihood of email spoofing and phishing attacks.
Recommendation
We recommend using unique, customized selectors for each DKIM key to make it more difficult for attackers to predict and target the domain's DKIM records. Regularly rotate selectors and associated keys to further strengthen the security of your domain's email authentication infrastructure.
Evidence
| Domain Queried | DNS Record Type | Description | Value |
|---|---|---|---|
| _dmarc.elektrotec24.de | TXT | Text record | "v=DMARC1; p=reject; rua=mailto:mailauth-reports@elektrotec24.de" |
Vulnerability description
We found that the DMARC record for the domain is not configured with ruf tag. A missing ruf (forensic reporting) tag in a DMARC record indicates that the domain owner has not enabled the collection of detailed failure reports. Forensic reports provide valuable insights into specific instances where emails fail DMARC authentication. Without the ruf tag, the domain administrator loses the ability to receive and analyze these reports, making it difficult to investigate individual email failures or identify targeted phishing or spoofing attacks that may be exploiting weaknesses in the email authentication setup.
Risk description
Without forensic reports (ruf), domain owners have limited visibility into the specifics of failed DMARC validation. This means potential malicious activity, such as email spoofing or phishing attempts, might go unnoticed until they result in more significant security breaches or reputational damage. Forensic reports allow for quick response to email abuses by providing detailed information about the failure, including the header information of the emails involved. The absence of this data hampers an organization's ability to identify and mitigate threats targeting its domain, increasing the risk of ongoing spoofing and fraud.
Recommendation
We recommend configuring the ruf tag in the DMARC record. This tag specifies where forensic reports should be sent, providing the domain owner with detailed data on DMARC validation failures. Forensic reports allow administrators to analyze why certain emails failed authentication, making it easier to fine-tune DMARC policies or address potential vulnerabilities. Ensure that the ruf email address belongs to a secure and trusted location capable of handling sensitive email data.
Evidence
We managed to detect a publicly accessible Post Office Protocol (POP3) service. Starting Nmap ( https://nmap.org ) at 2026-01-28 03:27 EET Nmap scan report for elektrotec24.de (213.109.162.50) Host is up (0.023s latency). Other addresses for elektrotec24.de (not scanned): 2a03:4000:36:469:38be:7dff:fe7a:8de8 rDNS record for 213.109.162.50: mail.burgbaran.de
PORT STATE SERVICE VERSION 110/tcp filtered pop3
Service detection performed. Please report any incorrect results at https://nmap.org/submit/ . Nmap done: 1 IP address (1 host up) scanned in 1.56 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 found insecure DNS cookie usage on the following nameservers: ns.inwx.de, ns2.inwx.de, ns3.inwx.eu
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
| Operating System | Accuracy |
|---|---|
| Linux 3.16 - 4.6 | 100% |
Vulnerability description
OS Detection
Evidence
| DKIM selector | Key type | Key size | Value |
|---|---|---|---|
| dkim | rsa | 1362 | "v=DKIM1;k=rsa;t=s;s=email;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwaBwqkJfeOWUwBn3DGHM//KxbyWcGvOC33i9vRxkNB39P9Ly3tH4tpG98tyFdKzNHfcuRJaLh0nmKngZmNjXHzbf96Soq1T32tiscmMPDC+plID8exmhx01ZZXO0GcR7HaKwKKQayoEOSIetSeTehaAm88XXqb0aRgkzbaSalCS1iwuSPNhhgTh" "ZuDrnkStjQv2Wz9BsORg4/zilC2ovuZtxU5IoDNoLlU5xvUes5aaubrVTUgWNEQkgRirA4yNS8nXvTfsUbuDrCldzij12Q06o8vGKCLrqxfJzh4mTlE7oI4FgL9ogjqmwGNC3nzDwn6VM8Bj003zBLn+xZgLTBQIDAQAB" |
| rsa | 1296 | "k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDeMVIzrCa3T14JsNY0IRv5/2V1/v2itlviLQBwXsa7shBD6TrBkswsFUToPyMRWC9tbR/5ey0nRBH0ZVxp+lsmTxid2Y2z+FApQ6ra2VsXfbJP3HE6wAO0YTVEJt1TmeczhEd2Jiz/fcabIISgXEdSpTYJhb0ct0VJRxcg4c8c7wIDAQAB" |
Evidence
| Domain Queried | DNS Record Type | Description | Value |
|---|---|---|---|
| elektrotec24.de | A | IPv4 address | 213.109.162.50 |
| elektrotec24.de | NS | Name server | ns.inwx.de |
| elektrotec24.de | NS | Name server | ns2.inwx.de |
| elektrotec24.de | NS | Name server | ns3.inwx.eu |
| elektrotec24.de | MX | Mail server | 10 mail.burgbaran.de |
| elektrotec24.de | SOA | Start of Authority | ns.inwx.de. hostmaster.inwx.de. 2025051800 10800 3600 604800 3600 |
| elektrotec24.de | AAAA | IPv6 address | 2a03:4000:36:469:38be:7dff:fe7a:8de8 |
| elektrotec24.de | TXT | Text record | "brevo-code:60108e95524576e518ba86ca1344c5ee" |
| elektrotec24.de | TXT | Text record | "google-site-verification=rrEkdqnozBhCSVtSgxSp9f2h0d1A10sytfrkcjoEz2A" |
| elektrotec24.de | SPF | Sender Policy Framework | "v=spf1 ip4:213.109.162.50 include:mail.burgbaran.de include:spf.brevo.com a mx -all" |
| _dmarc.elektrotec24.de | TXT | Text record | "v=DMARC1; p=reject; rua=mailto:mailauth-reports@elektrotec24.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 |
|---|---|---|---|
| elektrotec24.de | SPF | Sender Policy Framework | "v=spf1 ip4:213.109.162.50 include:mail.burgbaran.de include:spf.brevo.com a mx -all" |