Questions tagged [webserver]
A system whose primary function is to deliver web pages on request to clients.
0
votes
1answer
57 views
Server getting probed: why can I see successful GET requests to other sites?
I put up my site yesterday and this morning I saw a lot of requests in the logs. I have seen this before, and immediately could tell it was someone/something probing the server. Most of the requests ...
1
vote
3answers
304 views
New Linux virus “watchbog”. What could be the cause? [duplicate]
This question had already been brought up here, but was poorly answered with generic answers, like reinstall everything and no actual solution and cause.
So here's my story:
There is a new virus out ...
1
vote
2answers
53 views
Is an open source web application server publishing it's version at a public endpoint a security issue? [duplicate]
If an open source web application is publishing the version via a public, non-access controlled API/Header, is it considered a security issue?
The premise of the question is that, if a particular ...
0
votes
1answer
20 views
Best practice for config files for ec2 instances
I am building a lamp server ec2 image for a project we are doing. These images will be in an autoscaling group and on startup will be running startup script.
THere are some config files that have ...
1
vote
1answer
41 views
Deny access to IIS Server from IP local range
I have a local IIS 10 Server, this server runs a critical application.
I want to deny access for this server from IP local network and allow only 2 or 3 IP-addresses. Additionally I want to log any ...
1
vote
0answers
28 views
Trust boundaries for webapps (vs desktop apps)
I am currently working on fixing some security problems with our webapp as reported by VeraCode. Some of these pertain to "trust boundaries", i.e, what inputs can be trusted.
In some cases, our ...
-1
votes
0answers
18 views
How to make nginx to send early data in POST method [migrated]
I am testing TLS 1.3 and 0 RTT in a local nginx web server.
It works fine with GET methods. But when I use POST methods to send early data, it does not succeed. I think the cause is the ngnix server....
0
votes
2answers
116 views
Website is behaving strangely - was it attacked?
Our website was behaving strangely.
Sometime it was down and nothing was accessible.
Sometime it started loading but pages browsing was too slow.
We checked apache logs and found the below ...
3
votes
3answers
204 views
A protocol for encrypting the data on the server, but with a password on a mobile device
I want to implement the following encryption scheme. The data is created and stored on a web server, but related to some user of the system (i.e. it is entered "on behalf" of the user). Both ...
2
votes
2answers
126 views
Can hacker delete my server files and database where I am using below function?
I want to know how to protect my website from hackers. I am a php-mysql developer. For fetching data from databases I always use MySQLi. For preventing my website from SQL injection, I always use PHP'...
0
votes
1answer
70 views
How can we find server location and IPs? [closed]
Is it possible to find where some known application servers (such as whatsapp) are located and their IPs ?
1
vote
2answers
77 views
Encrypt but not verify sender identity https without nagging user?
I have a five or six personal websites that I would like to send over https so isps can't inject ads. They're nothing sites hosted on a $60/year shared server.
If I want to buy a https certificate I ...
1
vote
1answer
25 views
What are the drawbacks to automatically deleting web server access logs?
What would be the downsides to either disabling or automatically deleting web server access logs that are older than 7-10 days?
I'd like to limit how long I store personally-identifiable data (IP ...
1
vote
1answer
66 views
Risks of deploying a server authentication certificate along with a client application
What are the risks of deploying a client application with server authentication certificate (private + public key) so that a client application can host a webserver. Which is accessible via HOSTS ...
2
votes
1answer
121 views
Why use .ENV? What's wrong with storing secrets in a config.php file outside root directory?
Seems to be the general practice these days is to store secrets (e.g., DB, API credentials) in a .ENV file then load it to $_ENV and $_SERVER automatically. This popular library does that and it's ...
43
votes
8answers
12k views
Should log files be kept secret?
Accessing web server log files via a URL has a certain appeal, as it provides easy access. But what are the security risks of allowing open access to log files?
-1
votes
1answer
36 views
If I send request with PUT, and server return valid page with 403 status. This is correct work? [closed]
I send PUT. Server returned 301 status to valid http-address(!), but next response 403 status to hhtp-address. If I copy/paste this address all works correct. Please, say me: this is correct response ...
3
votes
1answer
131 views
Is it safe to open ports 80 and 443 in a home network
The intention behind this is that I'll be able to host a website from a home server (another pc with ECC ram etc.), but what worries me is that the network I'm using is also the same network which I ...
23
votes
4answers
5k views
Can an HTTPS server accidentally leak its private key?
Are there any known cases of HTTPS websites leaking the private key of their SSL certificate? Is it even technically possible for a bad website admin to misconfigure a site to send the private key as ...
2
votes
1answer
440 views
Is there a multi-layered DoS protection which can be tightly integrated with cloud hosting services?
I know that one can deny services (DoS) in any of the 7 layers of the OSI model and that in principle, a denial can be done by a single entity (human or machine) or from 2 or more such entities ("...
0
votes
1answer
50 views
SSL session key usage when browser opens multiple sockets to same server
Does a browser tab that opens multiple SSL-secured TCP sockets to the same server use the same session ID and keys for those sockets? I’ve seen pages served using HTTP open 5 or 6 sockets at the same ...
1
vote
3answers
177 views
How to prevent unauthorized users from accessing an image on my server just by URL?
I have a few dynamically generated images on my server (of high business value), which are supposed to be viewed only via our mobile app. The image is simply loaded from the URL as PNG. How can I ...
0
votes
2answers
85 views
Does HTML Purifier (which converts & to &) prevent HTTP parameter pollution?
If a REST endpoint (http://example.com) reads the p query parameter and pass it along to another endpoint:
http_get("http://example.com/api2?p=".$_GET['p']);
I will be able to exploit it by ...
1
vote
2answers
156 views
What can a site visitor do with a 777 file on my web server?
Sometimes I prefer working with text files instead of database as I can later manually edit the file content.
Imagine I have created a text file blacklist and chmodded it to 777. Let's say it is ...
-1
votes
0answers
110 views
XSS : How to bypass htmlentities when < > " & is escaped and no input is inside a tag attribute with single quote? (the page is UTF8)
So lets say we have a website where they use htmlentities and everything like < > " & is escaped but not ' (single quote), but the problem is the only input available inside a tag is inside a ...
3
votes
2answers
155 views
Cipher Suite TLS 1.2 - Weak in OHS
I am trying to correct weak encryption in TLS, by doing a test in SSL Labs, it throws weak encryption in the following chpher suite:
Current Configuration:
SSLCipherSuite HIGH:!MEDIUM:!LOW:!aNULL:!...
1
vote
0answers
32 views
Rotating session names vs a static session name with a rotating validation string
I'm building my own session management library in the Go programming language and I had an interesting idea to save memory. I created something called an overseer that looks for expired and abandon ...
1
vote
0answers
37 views
Found possible malware code on site - contacted owner - what does it do? [duplicate]
Small question. I'm trying to figure out what a piece of code does that I came across on a website I visited.
The website has obviously been hacked into, as there's a bunch of minified PHP code up ...
2
votes
0answers
48 views
Protecting website from content theft [duplicate]
I have a website called http://example.com. there is another website called http://example1.com it has the same content as for my website.
If I upload file on my website like http://example.com/test....
0
votes
1answer
140 views
NIKTO: Requires Authentication for realm ''MD5''
I am trying to perform a scanning of a web server using Nikto using:
nikto -id id:pass -h xxx.xxx.xx.xxx
I am specifying HTTP Basic authentication credentials and indeed with this credentials I can ...
0
votes
1answer
60 views
Any threats/SQL injections possible, when single-quote is being escaped?
Let's say, when server-side application (like WordPress) applies add_magic_quotes to all GET/POST parameters ( $_GET = add_magic_quotes($_GET); ), so calling the url:
example.com/?id=a'b
the app ...
1
vote
4answers
249 views
Attacks on server-side web
What types of attacks are specific for server-side web, but not client-side?
From what I have found on the Web the most attacks focus on client-side rather than server-side.
0
votes
0answers
54 views
Technical Repercussions of SSN briefly touching a server
I need to safely pass a SSN to Stripe from a web page. (We are doing taxes for our contractors)
I am well aware that storing a SSN is not a good idea. We don't need to. Stripe can handle it, but I am ...
0
votes
2answers
132 views
What are the security issues of exposing default server home page in public internet?
I have seen on internet where several website companies have exposed the default home page of web server such as Tomcat, NGNIX, Apache web server. I always believe it is not the best practice to ...
0
votes
1answer
33 views
How to defend and attack single database on server?
Lets say I would have my own web server with MySQL database hosted together with new website. What are the techniques that I can protect it and what are called the attack that can query my db ? Is ...
1
vote
1answer
387 views
Client certificate common name? Subject alternative name?
For an IoT project, I want to secure client server communication. I want both the server (Apache) and the clients identify/authenticate each other (a client won't communicate with other clients) ...
1
vote
2answers
286 views
Server Side request forgery (SSRF) explanation
I am looking to gain a better understanding of the SSRF vulnerability.
I have googled and watched YouTube tutorials but they all show advanced techniques that are difficult to understand.
I am ...
1
vote
0answers
50 views
Protect website against attacks with iframe for user generated javascript?
I'm creating a small playground for people to write and test out their JavaScript on my website. I know websites like jsfiddle already exist but it's just for fun and for the sake of trying something ...
0
votes
1answer
1k views
Filter TLS in Wireshark or other monitoring tool
As part of the new best practices in hardening server communications I need to deny TLS 1.0 on the web server, before doing so I wish to identify the amount of clients whom connect with this level of ...
-1
votes
1answer
99 views
If a site has no input then can it be hackable? [closed]
If I made a website without any input box can Hackers still hack my site?
0
votes
1answer
64 views
Data on VPS is safe, or can accessed on rent VPS Virtual Server?
I rent a VPS server for two months to test a webapp. I insert data into SQL on this server and want to host web app to this virtual server for test.
Can that server owner that rents a VPS to me or ...
-1
votes
1answer
358 views
Obfuscated PHP code found on Wordpress site - has it been compromised? [duplicate]
Firstly - I expect the answer to be yes. But I never dealt with something like this so I would like some advice.
A client has recently complained that their website went down. So I started ...
3
votes
0answers
92 views
Why exactly are self hosted websites deemed that dangerous? [closed]
Up to now I'm using a raspberry pi as a local server for trying out things or hosting my own little projects (beginner level), but I want to make it publicly available (most likely only for people I ...
-1
votes
1answer
148 views
Attempting SQLi against website with WAF filter [closed]
I was pentesting a website when I discovered that the URL included the id parameter. Because of this, I knew that the id parameter might be vulnerable to SQLi. I received a 200 response and found no ...
1
vote
1answer
60 views
How to hide folders inside webroot from being identified?
I have a library inside my webroot:
https://my-website.com/wp-content/my-library-i-want-to-hide
Accessing the url via a browser gives me the expected permission denied error. However, I want to make ...
-1
votes
1answer
235 views
Secure version of httpd package [closed]
I am using
Linux xyz.co 3.10.0-514.21.1.el7.x86_64 #1 SMP x86_64 x86_64 x86_64 GNU/Linux
Tried to install latest version of httpd which is 2.4.33. But it is not available for RHEL7.
That's why I ...
1
vote
1answer
132 views
dangers of using WAMPServer on my home PC?
Hello there I have been working on (learning) web development and have gone down the route of self hosting at the moment. I have a website which I've made, it doesnt have any user interface for input, ...
-3
votes
1answer
87 views
How to determine if a website uses an internal WAF? [closed]
Is there a tool to know if a website uses a firewall?
1
vote
2answers
57 views
Usage of same certificate for client and server authentication
Let's assume I have a device that has both client and server applications running on it at the same time. The client application for example connects to a remote secure webserver (HTTPS) that requires ...
44
votes
3answers
6k views
How do hosting providers prevent the compromise of one website from causing the compromise of another one?
Could one create a vulnerable website on purpose to attack a server of a hosting provider?
So in the question above which I recently asked we came to the conclusion that preventing one vulnerable ...
