Vulnerability Scan Result

Target:

https://rc03.u2cloud.org/

Scanned target: https://rc03.u2cloud.org/

Submitted: Aug 16, 2025 from TV

Public Scan

Scan mode: Passive (non-intrusive)

Summary

high

Info

Low

Medium

High

Critical

Screenshot

Screenshot could not be taken.

Title:	Template Team
Description:	No description found

IP Information

ip_address	64.226.94.59
country	DE
network_name	Digitalocean LLC
asn	AS14061

Open Ports

22/tcp	ssh	OpenSSH 8.7
80/tcp	http	nginx -
111/tcp	rpcbind	- 2-4
443/tcp	https	nginx -
27017/tcp	http	- -

Web Technologies

Software / Version	Category
Express	Web frameworks, Web servers
core-js 3.15.2	JavaScript libraries
Nginx	Web servers, Reverse proxies
Node.js	Programming languages
React	JavaScript frameworks
Meteor 3.1.2	JavaScript frameworks, Web frameworks
MongoDB	Databases
HSTS	Security

Web Application Vulnerabilities

Evidence

Software / Version	Category
Express	Web frameworks, Web servers
core-js 3.15.2	JavaScript libraries
Nginx	Web servers, Reverse proxies
Node.js	Programming languages
React	JavaScript frameworks
Meteor 3.1.2	JavaScript frameworks, Web frameworks
MongoDB	Databases
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 Evidence

URL	Evidence
https://rc03.u2cloud.org/	Response headers include the HTTP Content-Security-Policy security header with the following security issues:`script-src: 'self' can be problematic if you host JSONP, Angular or user uploaded files. base-uri: Missing base-uri allows the injection of base tags. They can be used to set the base URL for all relative (script) URLs to an attacker controlled domain. We recommend setting it to 'none' or 'self'. object-src: We recommend restricting object-src to 'none'. script-src: 'unsafe-eval' allows the execution of code injected into DOM APIs such as eval().`

https://rc03.u2cloud.org/

Response headers include the HTTP Content-Security-Policy security header with the following security issues:script-src: 'self' can be problematic if you host JSONP, Angular or user uploaded files. base-uri: Missing base-uri allows the injection of base tags. They can be used to set the base URL for all relative (script) URLs to an attacker controlled domain. We recommend setting it to 'none' or 'self'. object-src: We recommend restricting object-src to 'none'. script-src: 'unsafe-eval' allows the execution of code injected into DOM APIs such as eval().

Vulnerability description

We noticed that the Content-Security-Policy (CSP) header configured for the web application includes unsafe directives. The CSP header activates a protection mechanism implemented in web browsers which prevents exploitation of Cross-Site Scripting vulnerabilities (XSS) by restricting the sources from which content can be loaded or executed.

Risk description

For example, if the unsafe-inline directive is present in the CSP header, the execution of inline scripts and event handlers is allowed. This can be exploited by an attacker to execute arbitrary JavaScript code in the context of the vulnerable application.

Recommendation

Remove the unsafe values from the directives, adopt nonces or hashes for safer inclusion of inline scripts if they are needed, and explicitly define the sources from which scripts, styles, images or other resources can be loaded.

Classification

CWE	CWE-693
OWASP Top 10 - 2017
OWASP Top 10 - 2021

Evidence

URL
https://rc03.u2cloud.org/robots.txt

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	Method	Summary
https://rc03.u2cloud.org/	OPTIONS	We did a HTTP OPTIONS request. The server responded with a 200 status code and the header: `Allow: OPTIONS, GET, HEAD` 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

Infrastructure Vulnerabilities

Evidence

CVE	CVSS	EPSS Score	EPSS Percentile	CISA KEV	Summary
CVE-2023-38408	9.8	0.72622	0.98715	No	The PKCS#11 feature in ssh-agent in OpenSSH before 9.3p2 has an insufficiently trustworthy search path, leading to remote code execution if an agent is forwarded to an attacker-controlled system. (Code in /usr/lib is not necessarily safe for loading into ssh-agent.) NOTE: this issue exists because of an incomplete fix for CVE-2016-10009.
CVE-2024-6387	8.1	0.62715	0.98301	No	A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by failing to authenticate within a set time period.
CVE-2021-41617	7	0.01864	0.82307	No	sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initialized as expected. Helper programs for AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges associated with group memberships of the sshd process, if the configuration specifies running the command as a different user.
CVE-2025-26465	6.8	0.52936	0.97852	No	A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how OpenSSH mishandles error codes in specific conditions when verifying the host key. For an attack to be considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning the attack complexity high.
CVE-2023-51385	6.5	0.09522	0.92511	No	In ssh in OpenSSH before 9.6, OS command injection might occur if a user name or host name has shell metacharacters, and this name is referenced by an expansion token in certain situations. For example, an untrusted Git repository can have a submodule with shell metacharacters in a user name or host name.

Vulnerability description

Vulnerabilities found for Openssh 8.7

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

Software / Version	Category
MongoDB	Databases
Node.js	Programming languages
Meteor	JavaScript frameworks, Web frameworks
Nginx	Web servers, Reverse proxies
Express	Web frameworks, Web servers
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

Domain Queried	DNS Record Type	Description	Value
rc03.u2cloud.org	A	IPv4 address	64.226.94.59

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.