Security aspects concerning code written in the programming language PHP which is often used for web applications.

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1answer
549 views

Do PHP frameworks such as Zend, symfony and CakePHP provide default protection against cross site scripting?

ASP.NET MVC provides default protection against cross site scripting. Just wondering, if PHP frameworks do the same?
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2answers
1k 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 - ...
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0answers
603 views

Do I keep my PHP simple auth session secure enough?

I'm experimenting with security, cryptography and web applications. My aim is to create simple login system that is realy secure enough. I'd like to share my approach to keep authenticated session ...
0
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1answer
170 views

What are common problems that reveal PHP code? [closed]

What is the best method for securing PHP scripts that contain database passwords? From what I've read, PHP can be revealed when an error occurs and is not caught. Is there any way to reveal PHP by ...
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1answer
159 views

WordPress Private Expoit? [closed]

I have a friend who said he has a private exploit for all WordPress ran websites. I asked him to take down my private blog, to see if it is real. He couldn't do it. I tried to get some more ...
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1answer
87 views

session security in php

This has been asked a bunch of times. I am just curious to see if the below code provides a fairly significant level of security. are there any other if's i should consider? this is just an example, ...
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4answers
2k views

Malicious code in image. Harmful?

In my website, a user can upload his profile picture. After analysis of some pictures, I have found some pictures with malicious PHP code, just like the upload script. As an example, I have found a ...
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1answer
107 views

Secure a string in PHP [closed]

What do you think it's the best method to secure a string in PHP? I speak of hiding its content and avoid malicious changes by the user, but be able to recover the information. We can use the ...
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4answers
250 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 ...
0
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1answer
724 views

Is it safe to store the reset password token in php session

I have a login system created in PHP. It currently doesn't have the Forgot Password ? feature and I would like to implement the feature. For this I'm planning to do the following : When user ...
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3answers
1k views

Email activation string with MD5'd random number and email secure?

For the registration on my PHP powered website, I require email confirmation. After a user registers, a string is generated with the following code and sent to their email address. $key = ...
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1answer
253 views

php crypt - trailing dollar sign - extract only the salt part from hash - padding the salt

I am reading up on PHP's crypt() function. I have a few questions on it - What is the significance of the trailing '$' sign at the end of the salt string that I see in most examples. The manual ...
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1answer
995 views

MCRYPT_RIJNDAEL_256 max key allow? [closed]

maximun key for MCRYPT_RIJNDAEL_256 ? mcrypt_encrypt( MCRYPT_RIJNDAEL_256, <<==hash_hmac using sha512==>>, $text, MCRYPT_MODE_ECB, $iv ) Warning: mcrypt_encrypt(): Size of key is too large for ...
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0answers
1k views

blueimp jQuery-File-Upload getting PHP Hacked

I really like this upload package and want to use it, but from the time I set it up on my server, I've been hacked twice by something called the AnonGhost virus (anonghost.com). I tracked the ...
3
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1answer
330 views

Is my AES/CTR/RIPEMD encryption correctly implemented?

Below is my encryption implementation in PHP. It's based on mcrypt, and uses AES-128 in CTR mode along with a RIPEMD-128 HMAC for integrity checking. For brevity, I've inlined the functions for ...
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2answers
185 views

Protecting the remote database against tampering in a mobile app

This is the first time I face a mobile app deployment at big scale. This app needs to connect to a remote server where to store and retrieve data. I discarded connecting directly to the MySQL ...
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1answer
264 views

Have I done enough not be compromised through image uploading

I know that you can never be sure that you have done enough to be secure, and I also know that file uploading is hard to make correct. Before asking this question I read some of the related posts here ...
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2answers
2k views

PHP encrypt and decrypt with certificate

I am trying to think of the best way to encrypt and decrypt a message between two servers. I have found a lot of examples where people simply use a secret and PHP's mcrypt... ...
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0answers
40 views

Storing hashed or encrypted password in session? [duplicate]

I need users to be able to encrypt and decrypt without entering their passwords every time. One way is to store the hashed password in session, and use it for encryption and decryption. Problem with ...
3
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1answer
180 views

How can I store information securely when I can't use crypt or a hash?

I'm creating an application for Google Glass (technically it's Glassware, but whatever). The user will do the following steps when going through setup for the Glassware: Go to my website, redirected ...
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4answers
244 views

user authentication my method (reinventing the wheel) is this secure?

I have read many articles advising to use OpenID, including Stack Overflow Q&A, for authentication. Unfortunately I can't use openid because my auth is not based on an email id - it is based on ...
0
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1answer
254 views

False Positives- Server side protection against XSS

I read about XSS attacks and its prevention mechanism on server-side. It seems only protection is to sanitize the input by escaping special characters on server side (Using some PHP functions such as ...
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2answers
977 views

Possible attack on website

I am a developer and I therefor I have very little knowledge on security. So I need some help understanding the attack on website which we launched recently for one of our client. Website is built on ...
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0answers
22 views

Someone is making this request to the php cgi on by apache2 server, what does it mean do? [duplicate]

These are the query parameters the hacker is trying to POST: ...
6
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2answers
954 views

PHP: if charset mismatches (htmlentities UTF-8) viewed by client as ISO-8859-1 (or vice versa)

Short Question: Question: Could any security vulnerabilities arise if a server runs htmlentities as UTF-8 but the client views the results as ISO-8859-1? Assumption: No vulnerabilities exist when ...
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1answer
80 views

login not working using hash_pbkdf2 [closed]

i am storing the password using hash_pbkdf2 but now ive hit on a problem my code : 1.for register $salt = openssl_random_pseudo_bytes(125);//salt $final_pass = ...
0
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1answer
112 views

is this code valid for securing passwords? [duplicate]

i was wondering if this is a secure method for a hashing password.if it is not secure please tell me what to do in order to make it secure $pass='test'//the password ...
0
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1answer
270 views

XSS attack vector without forward slash?

is there an XSS attack vector that allows the inclusion of a external .js file without having to use forward slashes? let's say the path of the file is somewebsite.com/js/xss.js Is there a way to ...
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1answer
69 views

Storing third party auth info; Is this secure?

I have a feature request to connect my PHP web-app to the users mail server. I have usually strayed away from this type of work as it will mean storing the users email passwords. My question: is it ...
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2answers
326 views

VPN Client - Addtional Security Layer or a Useless Feature

I have a corporate web portal which is used for staff collaboration including a web-based mail interface connected to MySQL Database, corporate calendar, file storage, customer contacts data with ...
0
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1answer
157 views

Removing Unnecessary Services & Packages in a MySQL Ubuntu 12.04 Server [closed]

As part of hardening a MySQL 5.6 server running on Ubuntu 12.04 LTS, unnecessary services and packages will have to be removed. For a server that is serving only as a MySQL server, what services and ...
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2answers
216 views

Security of login form

I would like to know how secure is this code I made for a login form... because I'm new in this and have serious doubts. $sql = "SELECT user_name, user_password " ."FROM users " ."WHERE ...
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1answer
272 views

How can I recover from a hacked WordPress site and prevent future attacks?

I have a dedicated server running WordPress and have recently noticed that its been hacked and PHPShell a remote web server controller has been uploaded. This has let the hacker view and edit files ...
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2answers
144 views

Is Temporary XSS a Problem?

I use a site on a regular basis so I wanted to make sure it was secure. One of the things I checked was that when I changed my first name to <img src="http://blah.blah/blah/blah.notanextension" ...
2
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1answer
2k views

Authenticating Users from Android with PHP Webservice

I'm creating a simple Android application which requires reading and writing values to the cloud. I intent to use PHP for the webservice. But I'm a little confused over the authentication scheme. I ...
4
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3answers
169 views

Does PHP have a XSS API?

ASP.NET has a cross site scripting API by default, however does PHP have a cross site scripting prevention API?
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1answer
568 views

Is ASP.net More Secure than PHP in GENERAL? [closed]

In other words, my (long version) question is: Are developers able to get away with, more using ASP.net than PHP in terms of writing secure code for their apps? I ask this because ASP.net has many ...
2
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1answer
300 views

Clamav can't detect encoded virus files

I have a PHP sheller file (like c99 file) but it's Encoded ( with this functions: eval(gzinflate(base64_decode("7P3rehblahblah)) ) and the clamav virus scan can't detect it. How i can detect virus ...
0
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1answer
182 views

Is my hashing technique secure? [duplicate]

I am not sure if this is the best place to post this type of question. I have come up with function which, I believe, is a very secure method of hashing. (I could be completely wrong). Here's the ...
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1answer
116 views

Cross-checking Driver's License Against DMV Using MySQL DB or PHP Script? [closed]

Ok, so I am coming into this a little blind on how to go about allowing this app to store and check one's driver's license ID against the DMV or some other government agency. Basically, everything ...
2
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1answer
545 views

www-data is sending rogue mails through sendmail. How do I find the source?

So I have a Ubuntu server hosting a PHP-based web site for me. Some of the services rely on sendmail being configured. I have set it up to send through my GMail account. As of yesterday ~19:00 CET, ...
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3answers
279 views

Secure uploading file

I have file uploaded system in my php project. What I make at uploading: 1) Check file extension and file mime type. 2) If extension and mime type are allowed types, I save file outside of ...
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1answer
1k views

About password_hash() in PHP and storing (part of) its salt outside DB

So, i learned that new in PHP 5.5 is password-hash() which works much like crypt(). Which is more secure (slower) than md5() or sha1(). The result string is algo+hash+salt, which can be passed as-is ...
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3answers
122 views

What are some good ways to prevent a malicious visitor from maxing out our customer's API maximum allowed service calls?

We run an API service. We gave our customer a package for max limit of 12000 API calls / day. He reported to us that a user has been on purposely visiting his web page 12,000 times a day in order to ...
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3answers
180 views

is it possible to write php code in address bar and its gonna work? [closed]

Is it possible if i use in address bar this host.com?<?php unlink("/img/bg.jpg");?> or host.com?<?php rename("/bg.jpg","bg.png");?> if not then is there any way to do that?
4
votes
1answer
1k views

New to security, is php password_hash() good enough?

This is the first time I've had to handle personnel information and I want to make sure I have a good amount of security. I will be storing users' emails and passwords for their accounts on a MySQL ...
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4answers
477 views

Session id on page html source code

I want to know if it's dangerous in any way to store the current logged user session id on the page generated source code. Why I wanted to do that? I'm trying to share the user session between two ...
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2answers
80 views

What influences the speed of rendered php page using encryption [closed]

I've built a web app which uses the openssl_private_decrypt() functions. The rendering of a page with 15 messages encrypted with these functions takes remarkely longer as the ones without. (3-4 ...
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1answer
343 views

Injected Images

I want to learn all about that. How can we inject code into an image? Is the code must be php? Or is javascript or HTML works too? How I find documentation about this article? I'm a newbie about ...
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1answer
329 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) || ...