Tagged Questions

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

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0
votes
2answers
61 views

What type of probing sends GET /“ data ” to a server?

During monitoring of webserver logs I've stumbled upon those standard probings for wordpress exploits etc, like No route found for "GET /wp-login.php" (uncaught exception) No route found for "GET ...
-3
votes
1answer
52 views

Security concerning using Windows 7 as a web server [closed]

Can Windows 7 be used for hosting a low traffic website which only use php and mysql and nothing else, like email, file hosting, etc.
2
votes
1answer
104 views

What security does nginx provide between server blocks?

What security does nginx provide between server blocks? Here is an example scenario. Say I have two server blocks configured with nginx. Each serves up a web application to authenticated users. I ...
0
votes
3answers
59 views

How secure is my method?

I want to select data from a MySql database on an iphone device. The method I seem is the easiest one is to connect to a php file with GET arguments and then return it as a string. Now I'm just ...
18
votes
4answers
2k views

Is this verbose error message on the DOT website a security issue?

I was looking for a form on the US Department of Transportations website, and I came to a page that gave me an error, with a full debug report and stack trace. Hopefully, you can get the same result ...
4
votes
4answers
357 views

How widely deployed is TLS with cipher ECDHE?

Microsoft deployed a patch for Windows 2012 R2 and Windows 8.1 that adds the following ciphers. Cipher suite Exchange Encryption Hash TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 DH ...
1
vote
1answer
52 views

Should statically-linked server binaries (daemons) be deemed more secure? [closed]

For a long time I've pondered this question. I am aware of the benefits and downsides of dynamic libraries (shared objects), including the infamous article by Drepper. All other things being equal, ...
0
votes
1answer
31 views

Safely converting untrusted files with Microsoft Word in a web service

I'm made a small web service that gets urls, download them, and convert them for another format. Most of those urls are documents (doc, docs,...). Basically, I'm open them with MS-Word and convert ...
2
votes
1answer
318 views

How can the Google web crawler bypass portals?

This is a situation that I have encountered on a number of occasions. I will conduct a web search in Google, a link to a file (.pdf for example) will take you to that file on the server. It opens up ...
0
votes
0answers
84 views

Managing keyczar keysets across multiple servers (google compute engine)

I'm a developer building a web service that will be required to store a few credentials for 3rd party services that would themselves provide access to customer data that I would consider sensitive. ...
1
vote
1answer
163 views

Should I keep all UUIDv4 generated oAuth2 Bearer Tokens in my database to prevent an attack?

I generate oauth2 access and refresh tokens and store them in my database. I generate these tokens using UUID v4 and remove the dashes. I used to delete the tokens after they expire but now I store ...
-2
votes
1answer
190 views

Backdoors and hard-coded usernames and passwords

I have been researching on computer worms that brought me to this topic of backdoors. According to my research, backdoors are malicious pieces of code that are inserted into either computers to get ...
34
votes
6answers
4k views

PHP files browsable: is this a vulnerability?

I have a friend who has a website developed in PHP on which we can browse all his files one after one (of course, we can not read the content of the PHP files). Do you think this is a security hole ? ...
1
vote
1answer
165 views

Allow loopback in Iptables?

I'm trying to write Iptables rules for a small web server. Almost every source I've encountered recommends to allow loopback access to the web server, but doesn't explain why this is necessary. ...
2
votes
4answers
459 views

How to prevent users from downloading information from our search engine?

We have developed a search engine (simple search, no login required) where users can search details in the database (Apache Lucene) by entering their name (et. al.), then clicking the search button. ...
0
votes
2answers
167 views

Does the Heartbleed vulnerability affect signed java applets [closed]

I have a Windows based server that serves a signed JAVA applet. The website isn't secured (HTTP), but all JAVA applets have to be signed now, so the site serves a signed JAVA applet as part of a web ...
44
votes
1answer
7k views

What should end-users do about Heartbleed?

What should one do about the Heartbleed OpenSSL exploit? mainly talks about what people running websites should do about Heartbleed. What should end-users of websites be doing? Do they need to ...
1
vote
2answers
864 views

Was I a victim of an “Apache PHP Remote Exploit” attack?

I have a server in my computer for testing purposes, accessible from the outside. I was reviewing the access.log file, and I saw 89.187.33.50 - - [29/Mar/2014:03:39:01 +0100] "HEAD / HTTP/1.0" 200 - ...
5
votes
1answer
174 views

Cascaded Sudo for privilege elevation

I intend to use the least privileged user to do a given task. The issue is that it involve a kind of responsibility chain and translate as a sudo chain in my scripts, spreading the overall task in ...
1
vote
4answers
218 views

What needs to be focused on when hardening a LAMP stack? [closed]

I have a site running on a VPS. I set up the LAMP stack and a few other programs personally. This is only the second time I have set up a VPS and I am a bit worried about security. Are there things ...
11
votes
4answers
528 views

How to react when under attack

Just this week someone has been trying to attack the server of the company where I work. I have noticed that they have been trying to brute force root via ssh. fail2ban is handling that well and I ...
7
votes
3answers
641 views

Does hiding version numbers increase my security? [duplicate]

I’m currently trying to improve the security at our work. This sounds very broad, but, for example, I’m penetrating our systems and checking whether servers are vulnerable to certain exploits. As an ...
-1
votes
1answer
134 views

How bad is to buy domain name with .ext from another country even if they allow non citizens to own one?

I'd like to purchase a domain name from a country that does not require citizenship, since they can make nice urls, they are more available and sometimes not too expensive too! But few things annoys ...
8
votes
1answer
176 views

How to force “expensive calculation” when clients connect to my server?

Page 183 of Secrets & Lies on countering denial-of-service attacks: Some researchers have proposed defenses that force the client to perform an expensive calculation to make a connection. ...
0
votes
1answer
184 views

oracle weblogic vulnerability

I searched for Oracle Web logic vulnerabilities and found this vulnerability: Oracle WebLogic Server Cross-Site Scripting and Manipulation of Data Vulnerabilities ...
0
votes
4answers
140 views

How to secure my website's FTP?

When I opened ftp command prompt and typed open mydomain.com, it gave me the following and I think that this is a security vulnerable. connected to mydomain.com. 220----- Welcome to Pure-FTPd ...
1
vote
1answer
112 views

Checklist for securing JBoss

Is there a security checklist for auditing JBoss configuration files ? CIS and DISA provides security checklist only for Tomcat and Apache server. Is there any other ressources ?
4
votes
2answers
267 views

Retention periods for web logs

I work for an ASP that provides banking solutions Card Services Payments ACH Online Banking And others Back Story: Our company provides an "all in one" solution or parts thereof, we are ...
0
votes
1answer
198 views

Virtual private server security [closed]

I want to move from a shared hosting to VPS. I never used VPS or dedicated server, so I wanted to know if there are some security precautions that I should have in mind. Say, I create a ftp account ...
4
votes
3answers
94 views

Will sabotaging a shared web hosting account threaten the security of sibling accounts being that they are shared on the same server?

Will sabotaging a shared web hosting account threaten the security of sibling accounts being that they are shared on the same server? Whether it it be through htaccess setups, posting login ...
4
votes
4answers
104 views

What things should I check for when giving a client control of the filename parameter to C's open() function?

I'm doing a school project where we are building a simple web server in C. To implement this I read the first line of the request (all I need for my purposes) and parse the middle string as the file ...
1
vote
2answers
71 views

Preventing interaction among web application on a shared hosting account

I have multiple web application installed in separeted directories in a shared hosting account. My worry is if one application get hacked, attacker can use it to attack other applications too. So, My ...
0
votes
1answer
58 views

Security implications of putting virtual hosts source code in /var/www/[domain]

A friend pointed out that putting virtual hosts as sub folders of the default /var/www was a bad idea. (linux example path; this applies to all OS) I see that it's possible to reach the virtual hosts ...
1
vote
2answers
361 views

Directory traversal & default filesystem permissions (755) for web server

I'm trying to get a better understanding of the potential security holes my default filesystem permissions might be creating. It appears I am capable of traversing my filesystem, serving simple php ...
0
votes
2answers
68 views

Is it possible to sabotage google bots? [closed]

Consider the following theoretical webserver: On any request, produce an html response that consists of 2 links, which are each randomly chosen strings followed by ".html". When the google bot ...
6
votes
3answers
1k views

First steps in preventing DOS attacks

My server is currently being attacked from another server. This is my log: root@my-server:/var/log# tail -f auth.log Feb 19 11:53:08 my-server sshd[3745]: Disconnecting: Too many authentication ...
0
votes
0answers
23 views

Why is it not advisable to have the database and web server on the same machine? [duplicate]

I'm bringing this across from a question on stackoverflow, but I'd like to focus specifically on the security aspects of it (and not the performance, etc..). My hypothesis is that the cost of ...
34
votes
3answers
19k views

“Optimal” Web Server SSL Cipher Suite Configuration

Over the last couple of years there have been a number of changes in what would be considered an optimal SSL cipher suite configuration (e.g. the BEAST and CRIME attacks, the weaknesses in RC4) My ...
0
votes
1answer
224 views

Can closing port 80 lead to more security?

If a website is running on HTTPS only, is it reasonable to close port 80 of the web server and only leave port 443 open? Does this action provide more security for the website?
0
votes
1answer
139 views

How do I solve a lot of Failure Audit (529 680) which are appearing in event viewer “Security” tab?

was trying to consume an Web Services that I have published on the Web but I couldn't thing is that when I got into the server and check the "Event Viewer" I have a LOT of "Failure Audit" and they ...
1
vote
3answers
74 views

Why pull upgrade from production server rather pushing them from development server?

I am reading a book on security which suggest that if you have both development and production server and if you make some change, you should pull them from production server rather pushing them from ...
1
vote
1answer
127 views

Is authentication through proxy sites safer?

usually in office or wherever whenever we are blocked with gmail and facebook websites,we used to browse the site with the proxy sites,we used to pass our login data through proxy sites,my question is ...
2
votes
2answers
363 views

Does reverse proxy between two web servers impact security of both?

Situation: Consider the site: example.com, hosted at web server A. A WordPress blog is to be installed on a different web server, B. In order to route a WordPress installation to a subdirectory on ...
4
votes
1answer
87 views

Dangerous to open a unix socket within www root?

My web server is chrooted into /var/www, and its contents are available over the network. One of my web applications needs access to a unix socket, and so that socket needs to be somewhere in ...
1
vote
2answers
415 views

PCI DSS - only one primary function per server

The PCI DSS says that a server can have only one primary function and i'm a little confused over what it means by 'one primary function' we have a webserver with database - web pages and email is ...
0
votes
1answer
85 views

Different certificate information for the same website?

Apologies for the funny title, I'll try to give a better explanation here :) I have just noticed something weird with regards to a website certificate: if I go to https://www.anobii.com/login using ...
0
votes
1answer
292 views

Possible ways of exploiting PHP register_globals [closed]

I have a PHP script that executes a bunch of commands to verify that a user is logged. if (( isset ($password) && $password!="" && auth($password,$hidden_password)==1) || ...
1
vote
0answers
40 views

How to manage security for multiple PC and VM?

I have a firewall VM which creates I have used to setup subnet for different purposes. For example: (fake ips, of course) 1.1.2.1/24 DMZ 1.1.3.1/24 Internal 1.1.5.1/24 security/logging I use ...
2
votes
1answer
542 views

How to run a tor hidden service from home securely?

Another theoretical question about Tor: Imagine I am running a dissident web site as a hidden service. How can I reduce the chances that I get caught? Assume I am running the server from home, over a ...
2
votes
1answer
150 views

What features boost security for a home edge router?

I want to hide my home network behind a router and not worry about firewalls on internet-facing devices. Furthermore, one PC is going to be hosting some services, so I guess I need port forwarding as ...