Vulnerability Scan Result
IP address | 31.31.75.59 |
Country | CZ |
AS number | AS197019 |
Net name | Wedos Internet A.S |
22/tcp | ssh | OpenSSH 8.4p1 Debian 5+deb11u3 |
53/tcp | domain | NLnet Labs NSD |
80/tcp | http | nginx 1.18.0 |
443/tcp | https | nginx 1.18.0 |
Software / Version | Category |
---|---|
Django | Web frameworks |
Nginx 1.18.0 | Web servers, Reverse proxies |
Python | Programming languages |
HSTS | Security |
Web Application Vulnerabilities
Evidence
Risk Level | CVSS | CVE | Summary | Affected software |
---|---|---|---|---|
7.8 | CVE-2022-41741 | NGINX Open Source before versions 1.23.2 and 1.22.1, NGINX Open Source Subscription before versions R2 P1 and R1 P1, and NGINX Plus before versions R27 P1 and R26 P1 have a vulnerability in the module ngx_http_mp4_module that might allow a local attacker to corrupt NGINX worker memory, resulting in its termination or potential other impact using a specially crafted audio or video file. The issue affects only NGINX products that are built with the ngx_http_mp4_module, when the mp4 directive is used in the configuration file. Further, the attack is possible only if an attacker can trigger processing of a specially crafted audio or video file with the module ngx_http_mp4_module. | nginx 1.18.0 | |
7.5 | CVE-2023-44487 | The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023. | nginx 1.18.0 | |
7.1 | CVE-2022-41742 | NGINX Open Source before versions 1.23.2 and 1.22.1, NGINX Open Source Subscription before versions R2 P1 and R1 P1, and NGINX Plus before versions R27 P1 and R26 P1 have a vulnerability in the module ngx_http_mp4_module that might allow a local attacker to cause a worker process crash, or might result in worker process memory disclosure by using a specially crafted audio or video file. The issue affects only NGINX products that are built with the module ngx_http_mp4_module, when the mp4 directive is used in the configuration file. Further, the attack is possible only if an attacker can trigger processing of a specially crafted audio or video file with the module ngx_http_mp4_module. | nginx 1.18.0 | |
6.8 | CVE-2021-23017 | A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact. | nginx 1.18.0 | |
5.8 | CVE-2021-3618 | ALPACA is an application layer protocol content confusion attack, exploiting TLS servers implementing different protocols but using compatible certificates, such as multi-domain or wildcard certificates. A MiTM attacker having access to victim's traffic at the TCP/IP layer can redirect traffic from one subdomain to another, resulting in a valid TLS session. This breaks the authentication of TLS and cross-protocol attacks may be possible where the behavior of one protocol service may compromise the other at the application layer. | nginx 1.18.0 |
Vulnerability description
We noticed known vulnerabilities in the target application based on the server responses. They are usually related to outdated systems and expose the affected applications to the risk of unauthorized access to confidential data and possibly denial of service attacks. Depending on the system distribution the affected software can be patched but displays the same version, requiring manual checking.
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.
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-1026 |
OWASP Top 10 - 2017 | A9 - Using Components with Known Vulnerabilities |
OWASP Top 10 - 2021 | A6 - Vulnerable and Outdated Components |
Evidence
URL | Cookie Name | Evidence |
---|---|---|
https://cestiniste.cz/ | csrftoken | Set-Cookie: csrftoken=m6UthrVjusLE7ENTdkWQxJeovvFmArN3 |
Vulnerability description
We found that a cookie has been set without the <code>Secure</code> flag, which means the browser will send it over an unencrypted channel (plain HTTP) if such a request is made. The root cause for this usually revolves around misconfigurations in the code or server settings.
Risk description
The risk exists that an attacker will intercept the clear-text communication between the browser and the server and he will steal the cookie of the user. If this is a session cookie, the attacker could gain unauthorized access to the victim's web session.
Recommendation
Whenever a cookie contains sensitive information or is a session token, then it should always be passed using an encrypted channel. Ensure that the secure flag is set for cookies containing such sensitive information.
Classification
CWE | CWE-614 |
OWASP Top 10 - 2017 | A6 - Security Misconfiguration |
OWASP Top 10 - 2021 | A5 - Security Misconfiguration |
Evidence
URL | Cookie Name | Evidence |
---|---|---|
https://cestiniste.cz/ | csrftoken | The server responded with Set-Cookie header(s) that does not specify the HttpOnly flag: Set-Cookie: csrftoken=m6UthrVjusLE7ENTdkWQxJeovvFmArN3 |
Vulnerability description
We found that a cookie has been set without the <code>HttpOnly</code> flag, which means it can be accessed by potentially malicious JavaScript code running inside the web page. The root cause for this usually revolves around misconfigurations in the code or server settings.
Risk description
The risk is that an attacker who injects malicious JavaScript code on the page (e.g. by using an XSS attack) can access the cookie and can send it to another site. In case of a session cookie, this could lead to session hijacking.
Recommendation
Ensure that the HttpOnly flag is set for all cookies.
Classification
CWE | CWE-1004 |
OWASP Top 10 - 2017 | A6 - Security Misconfiguration |
OWASP Top 10 - 2021 | A5 - Security Misconfiguration |
Evidence
URL | Evidence |
---|---|
https://cestiniste.cz/ | 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 | A6 - Security Misconfiguration |
OWASP Top 10 - 2021 | A5 - Security Misconfiguration |
Evidence
Software / Version | Category |
---|---|
Django | Web frameworks |
Nginx 1.18.0 | Web servers, Reverse proxies |
Python | 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.
Classification
OWASP Top 10 - 2017 | A6 - Security Misconfiguration |
OWASP Top 10 - 2021 | A5 - Security Misconfiguration |
Vulnerability description
Website is accessible.
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
OWASP Top 10 - 2017 | A6 - Security Misconfiguration |
OWASP Top 10 - 2021 | A5 - Security Misconfiguration |
Evidence
URL | Method | Summary |
---|---|---|
https://cestiniste.cz/ | OPTIONS | We did a HTTP OPTIONS request. The server responded with a 200 status code and the header: `Allow: GET, HEAD, 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 | A6 - Security Misconfiguration |
OWASP Top 10 - 2021 | A5 - Security Misconfiguration |
Infrastructure Vulnerabilities
Evidence
Risk level | CVSS | CVE | Summary | Exploit |
---|---|---|---|---|
7.8 | CVE-2022-41741 | NGINX Open Source before versions 1.23.2 and 1.22.1, NGINX Open Source Subscription before versions R2 P1 and R1 P1, and NGINX Plus before versions R27 P1 and R26 P1 have a vulnerability in the module ngx_http_mp4_module that might allow a local attacker to corrupt NGINX worker memory, resulting in its termination or potential other impact using a specially crafted audio or video file. The issue affects only NGINX products that are built with the ngx_http_mp4_module, when the mp4 directive is used in the configuration file. Further, the attack is possible only if an attacker can trigger processing of a specially crafted audio or video file with the module ngx_http_mp4_module. | N/A | |
7.5 | CVE-2023-44487 | The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023. | N/A | |
7.1 | CVE-2022-41742 | NGINX Open Source before versions 1.23.2 and 1.22.1, NGINX Open Source Subscription before versions R2 P1 and R1 P1, and NGINX Plus before versions R27 P1 and R26 P1 have a vulnerability in the module ngx_http_mp4_module that might allow a local attacker to cause a worker process crash, or might result in worker process memory disclosure by using a specially crafted audio or video file. The issue affects only NGINX products that are built with the module ngx_http_mp4_module, when the mp4 directive is used in the configuration file. Further, the attack is possible only if an attacker can trigger processing of a specially crafted audio or video file with the module ngx_http_mp4_module. | N/A | |
6.8 | CVE-2021-23017 | A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact. | N/A | |
5.8 | CVE-2021-3618 | ALPACA is an application layer protocol content confusion attack, exploiting TLS servers implementing different protocols but using compatible certificates, such as multi-domain or wildcard certificates. A MiTM attacker having access to victim's traffic at the TCP/IP layer can redirect traffic from one subdomain to another, resulting in a valid TLS session. This breaks the authentication of TLS and cross-protocol attacks may be possible where the behavior of one protocol service may compromise the other at the application layer. | N/A |
Vulnerability description
Vulnerabilities found for Nginx 1.18.0
Recommendation
We recommend you to upgrade the affected software to the latest version in order to eliminate the risks imposed by these vulnerabilities.
Evidence
Domain Queried | DNS Record Type | Description | Value |
---|---|---|---|
_dmarc.cestiniste.cz | TXT | Text record | "v=DMARC1;p=none;pct=100;rua=mailto:lukas+cestiniste@pohlreichlukas.eu;" |
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.
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
Domain Queried | DNS Record Type | Description | Value |
---|---|---|---|
_dmarc.cestiniste.cz | TXT | Text record | "v=DMARC1;p=none;pct=100;rua=mailto:lukas+cestiniste@pohlreichlukas.eu;" |
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.
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.
Vulnerability description
We found that no DKIM record was configured. When a DKIM (DomainKeys Identified Mail) record is not present for a domain, it means that outgoing emails from that domain are not cryptographically signed. DKIM is a critical component of email authentication, allowing recipients to verify that an email was genuinely sent from an authorized server and that the message has not been altered in transit. The absence of a DKIM record leaves the domain vulnerable to email spoofing and phishing attacks, as attackers can send fraudulent emails that appear to originate from the domain without any cryptographic verification.
Recommendation
We recommend implementing DKIM for your domain to enhance email security and protect your brand from email-based attacks. Generate a DKIM key pair (public and private keys), publish the public key in the DNS under the appropriate selector, and configure your email servers to sign outgoing messages using the private key. Ensure that the DKIM key length is at least 1024 bits to prevent cryptographic attacks. Regularly monitor DKIM signatures to ensure the system is functioning correctly and update keys periodically to maintain security.
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
Domain Queried | DNS Record Type | Description | Value |
---|---|---|---|
cestiniste.cz | A | IPv4 address | 31.31.75.59 |
cestiniste.cz | NS | Name server | ns.wedos.cz |
cestiniste.cz | NS | Name server | ns.wedos.eu |
cestiniste.cz | NS | Name server | ns.wedos.com |
cestiniste.cz | NS | Name server | ns.wedos.net |
cestiniste.cz | MX | Mail server | 10 9b500890fbbee5d9.mx2.emailprofi.seznam.cz |
cestiniste.cz | MX | Mail server | 20 9b500890fbbee5d9.mx1.emailprofi.seznam.cz |
cestiniste.cz | SOA | Start of Authority | ns.wedos.com. wedos.wedos.com. 2024111202 3600 1800 1814400 3600 |
cestiniste.cz | AAAA | IPv6 address | 2a02:2b88:2:1::80b:1 |
cestiniste.cz | TXT | Text record | "google-site-verification=Mk_MI34zmlyYxt9Di3beIAm6P2p5SGNAURjyj9B_EOA" |
cestiniste.cz | SPF | Sender Policy Framework | "v=spf1 include:spf.seznam.cz -all" |
_dmarc.cestiniste.cz | TXT | Text record | "v=DMARC1;p=none;pct=100;rua=mailto:lukas+cestiniste@pohlreichlukas.eu;" |
Recommendation
We recommend reviewing all DNS records associated with the domain and identifying and removing unused or obsolete records.
Evidence
Operating System |
---|
Linux 5.0 - 5.4 |
Vulnerability description
OS Detection
Recommendation
Vulnerability checks are skipped for ports that redirect to another port. We recommend scanning the redirected port directly.
Evidence
Domain Queried | DNS Record Type | Description | Value |
---|---|---|---|
cestiniste.cz | SPF | Sender Policy Framework | "v=spf1 include:spf.seznam.cz -all" |
Evidence
Software / Version | Category |
---|---|
Python | Programming languages |
CFML | Programming languages |
GeoServer | Maps |
Django | Web frameworks |
Nginx 1.18.0 | Web servers, Reverse proxies |
Adobe ColdFusion | Web frameworks |
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.
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.