Access control based on user, group, or global access.

learn more… | top users | synonyms

1
vote
1answer
88 views

Securing WebHosting Shell Access

If I provide SSH access to users who has paid webhosting service, what security measures should be applied ? What I can think of: SSH keys RSA of 4096 size (shall be secure for a while) Apache ...
1
vote
1answer
82 views

Securing Downloadable Files on Website Per User

I have an ASP.NET website serving up private PDF documents. The PDFs are stored unencrypted on a share on the internal network. The user logs in and navigates to the download page. The web server ...
1
vote
0answers
48 views

Why allow access without an access token but deny access with an invalid access token?

I encountered a data storage service with rather weird access policies. There're "folders" with "files" and each "folder" can have either of the following permissions: anyone in the world can ...
1
vote
1answer
142 views

App permissions to access hardware “at any time without your confirmation”

On Android applications now some applications say that they want access to things such as speaker or camera "at any time without your confirmation". I wasn't sure if this meant that it does not ...
1
vote
3answers
691 views

What is the most secure way to set up web server user permissions? [closed]

The default Debian way of setting up a common web server (Nginx) is to run the main process as root and unprivileged workers as www-data. In order to allow for the worker processes to read/execute web ...
1
vote
1answer
980 views

WSO 2.5 Found on Apache

I have found on my web server the file wp-conf.php which when you call it from the browser with a url parameter like wp-conf.php?t7831n=any value shows an interface where you can control the entire ...
0
votes
2answers
359 views

Given an IP address can you ssh into /tmp without password?

I'm a Software Engineer, but I have no experience in security, so i'm trying to learn by doing (woot Experiential learning!). I know that the permission settings on the tmp folder are very relaxed. ...
0
votes
3answers
124 views

How much faster would computers be if not for security? [closed]

I was wondering, assuming a "The Invention of Lying" world, but where no one was able to steal or misrepresent themselves how much faster would computers be? Just to give two examples of what I mean, ...
0
votes
2answers
262 views

Does iptables work in kernel mode? [closed]

I am not sure about that. It should run in kernel mode in order to avoid some user-mode program to kill/suspend the firewall and do its dirty job. The malware would not be able to kill the firewall ...
0
votes
3answers
95 views

Permissions security scenarios for a web server

Having /var/www/site.com owned by www-data:www-data with a 750 permission for directories and 640 for files, and having my user alexb added to www-data group, I found my self with permission issues ...
0
votes
1answer
342 views

Would adding root to a group open a security hole? [closed]

I have a server for which I have created a cron job "sendalerts" to users. Mind you this "sendalerts.php" should be runnable from two methods (via browser and also via a cron job) So cron's job is to ...
0
votes
1answer
414 views

is it OK to grant permission for IUSR_ to cmd.exe?

One of my developers asked me to grant permission to IUSR_ user (the IIS user) to CMD.exe (console) now I'm wondering is it safe to do it? He is complaing, that his libraries had to use console for ...
0
votes
2answers
118 views

How should permissions be stored?

In a system where users have multiple permissions that may overlap (i.e. "Write" might not include "Read" etc.) what is the best way to keep them in the database? Both in terms of security and ...
0
votes
1answer
111 views

Why doesn't the OS give every application a secret password?

As far as I understand if Dropbox wants to automatically run in the background without asking the user for a password it has to store the password somewhere on the harddrive and has currently no way ...
0
votes
2answers
89 views

How to handle data-dependent Claims?

This question is about Claims-Based Authorization and Windows Identity Foundation (unfortunately I lack the priviledge to create a tag for this). Consider the following simple use case: I have a ...
0
votes
2answers
344 views

How to protect files (cron files) frome being executed by everyone?

I wonder what read / write permissions should I set on my cron files (php files) so they can be executed only by our server. We're using CentOS 5.9 - 64bit and cPanel / WHM + Apache. Thanks!
0
votes
1answer
451 views

website hacked and all its content erased despite the protections

i was hacked by a guy who erased everything. I spent the day to put everything in order, and i would like to find a solution for this : he erased all the files, and also changed the title for "www" in ...
0
votes
1answer
57 views

What technique should I use to prevent unpermitted access to my REST API

I need to build an REST API that can be accessed via HTTPS when given valid credentials. How should I implement those credentials? I am looking for advice whether I should use plain old passwords, ...
0
votes
1answer
53 views

Why is it ok that OS X defaults to ignoring owership on external volumes?

I just discovered this fact tonight and I was rather floored by it. Isn't that a gaping security flaw? I realize that an external drive is less secure by virtue of the fact that someone could simply ...
0
votes
1answer
57 views

What files would I be able to view as localhost?

If I was able to view any page on a website as localhost using SSRF, what files should I check for? I checked to see if I could view robots.txt normally, and I couldn't, but using SSRF, I was able to. ...
0
votes
1answer
378 views

Can local Admin on Windows be given restricted permissions?

Looking at a lot of different security software on Windows, a lot of them rely on some settings on the computer which can probably be overridden by a local administrator. For eg. some DLP software ...
0
votes
2answers
55 views

Should a user be able to change another user's role to match their own?

Lets say a web application has four user roles. Standard, Supervisor, Manager and Administrator. Should a manager be able to promote someone else to a Manager, or only to a supervisor? I realize in ...
0
votes
1answer
430 views

Helpdesk role and local admins

I need to re-work our current security model for desktop computers, and would like some insight as to what changes can be made as well as best practices. Currently we have the helpdesk role that is ...
0
votes
0answers
13 views

TYPO3 installation and apache's DocumentRoot permissions [migrated]

I just installed TYPO3 7.1.0 and managed to resolve all the issues (e.g. missing system libraries, php-open_basedir-issue and so on) during and after the installation. But there is one issue that ...
0
votes
0answers
27 views

Improve the security of a website implementing the least privilege principle [duplicate]

I am a beginner and I am trying to program a secure website to improve my skills and knowledge. I am under Linux and I am using LAMP with php. My website is similar to a social network so people will ...
0
votes
0answers
100 views

Improve the security of a website implementing the least privilege principle

I am a beginner and I am trying to program a secure website to improve my skills and knowledge. I am under Linux and I am using LAMP with php. My website is similar to a social network so people will ...
0
votes
2answers
93 views

Protecting code injection via chattr on php files?

Recently, a website I hosted (wordpress I think) for a friend got hacked and all php pages had added code at the bottom in the form of "echo base64_encode(...);". Thus there were unwanted ads on very ...
0
votes
0answers
93 views

Ethical hacking: using a named pipe to insert public key into a authorized_keys file?

I have a couple of CentOS VMs as part of a class I'm taking, I'm just trying to understand how loose permissions (other than the obvious 777) can be taken advantage of. The targetted account on VM1 ...
0
votes
0answers
19 views

Is it a security risk to give read/write permissions to /Library/WebServer/Documents to my main account?

The default setting is that the apache2 root-directory Documents is owned by root and I have to enter a password each time I change it. This is why I want to give full permissions to my user account ...
-1
votes
1answer
82 views

Server security experiment? [closed]

Okay, so I am in a university class where we are using a server. Each student in the class has access to the server. We all share it. I can see their files and open them, and they likewise can see ...
-6
votes
2answers
570 views

PHP injection on 777 file [closed]

Some one has modified a PHP file, which had permissions set to 777, on my VPS server. How can someone do that without administrative access to the server? What information I can give you? I know ...