A cookie, also known as an HTTP cookie, web cookie, or browser cookie, is used for an origin website to send state information to a user's browser and for the browser to return the state information to the origin site. The state information can be used for authentication, identification of a user ...

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3
votes
1answer
181 views

Vulnerabilities of having one path of app accessible only via HTTPS but others via HTTP?

Imagine example.com that is accessible via HTTP and HTTPS. Most of content at site isn't secure and it won't be bad if it will be read by attacker. One of paths - example.com/secure_zone is accessible ...
3
votes
1answer
1k views

Storing users cookies in a database on a server

I want to use Apple Push Notification Service, so I need a server. This server will have to check a site every x minutes. How the site that has to be checked requires the user to login. So is it ok ...
2
votes
5answers
8k views

Store username in cookie for a web site

I want to store the username for a web site in the coockie, is it secure? What an hacker can do with this info?
2
votes
1answer
146 views

What's the point of rejecting a cookie?

When you access a website, lynx provide the option to reject a cookie, what's the point of doing so? All I thought about is that if you don't accept a cookie, you cookie won't be stolen during a XSS ...
2
votes
3answers
617 views

What do web trackers know about/think of me?

Many companies use HTTP cookies, flash cookies, and other analytics to track visitors on the web and classify them. How can I find out what my web profile is currently, and what these trackers are ...
2
votes
2answers
120 views

Is encrypted cookie without authentication secure enough?

I have some sensitive data in the cookie, e.g. it contains the user id that is later on used to execute the query and we trust the cookie because it is encrypted. All communication happens only on ...
2
votes
2answers
123 views

Is it any more or less secure to delete all my cookies vs. individually logging out?

So I've lost all of my Firefox bookmarks (well not since 3.0) or history (3.5?) or my current session enough times (yeah... this still happens) that I don't leave my precious Firefox profile to chance,...
2
votes
2answers
1k views

What if a browser does not understand the secure flag of cookie

I have two questions related to the same: 1 - As 'Httponly' attribute is understood by a set of modern browsers (https://www.owasp.org/index.php/HttpOnly#Browsers_Supporting_HttpOnly), I was ...
2
votes
1answer
108 views

My site is getting hit by 3 crawlers apparently from the EU

Recently my site got a spike in traffic from three crawlers: eu-cookie-law-enforcement-6.xyz law-enforcement-aa.xyz law-enforcement-gg.xyz They link to a warning page about cookies from the EU. ...
2
votes
1answer
63 views

Is a 'remote' cookie replay attack possible?

Once a cookie is stolen from the session of a legitimate user, can I perform a 'remote' cookie replay attack on that user? I am successfully able to perform a cookie replay attack on the same system, ...
2
votes
1answer
3k views

Setting the HTTPOnly flag for PHPSESSID cookie [closed]

I am getting this message from my security audit: Cookie name: "PHPSESSID" Cookie domain: "xxx.xxx.xx.xxx" If possible, you should set the HTTPOnly flag for this cookie. How can I set ...
2
votes
1answer
1k views

Mandatory to implement HTTPOnly if Java Secure Cookies are set to 'true'?

Here is a test case from a recent application security asessment which I have had experienced: cookie = new Cookie(strKey1, EncryptDecrypt.encrypt(strValue)); cookie.setMaxAge(-1); cookie.setDomain(...
2
votes
1answer
524 views

What will disabling third party cookies block?

What is the difference between 1st party cookies and 3rd party cookies and what are the pros and cons of disabling it? Will facebook and google (and other ad companies) be completely unable to track ...
2
votes
2answers
938 views

How to avoid session fixation (Login CSRF) by MitM attack without HSTS?

I'm writing a web app that already uses TLS encrypted connections (HTTPS), Secure; HttpOnly session cookie, HMAC-SHA1 CSRF token, requires correct Referer header to avoid Login CSRF and changes ...
2
votes
2answers
212 views

Enforce a time limit on the number of uploads per user

I've done a lot of searching on SE and particularly here in regards to preventing issues or attacks for an image based website to accept image uploads, but I haven't seen anyone mention the idea of ...
2
votes
4answers
245 views

New gTLDs are coming. How will browsers handle cookies, SOP and certificates?

Given that the security "zone" varies based on the TLD, how will the new TLS be handled? For example: A browser may permit cookies to be shared and SSL certificates, and wildcard certificates ...
2
votes
2answers
544 views

How attacker can access victim's account without knowing its credentials?

I want to login facebook from a wifi connection and check sign-in page is over https but later when i don't pay attention to address bar (for example when playing games and click on links like a crazy ...
2
votes
1answer
615 views

What is this spam used for?

Recently my secondary e-mail address was exposed by an incident, and soon I received this spam. What is this spam used for?
2
votes
1answer
342 views

Is this a safe way to identify users connecting to a chat server?

Before I start, all information will go over HTTPS. So, my website is basically like a forum with the authentication part finished and working. This forum has a real time chat application that sends ...
2
votes
1answer
887 views

HeartBleed - how do I invalidate all session cookies?

As part of the Heartbleed event, I have upgraded OpenSSL, reissued and replaced certificates and revoked the old ones and changed passwords however, I am also seeing advice to invalidate all session ...
2
votes
1answer
3k views

Can a webpage read another page's cookies?

I was listening to Pandora as I logged in here, and the next commercial was about InfoSec. That set me wondering as to whether that was a coincidence (probably) or if they knew somehow. To make a long ...
2
votes
1answer
4k views

Stopping Session Hijacking

If you noticed, I put "stopping" instead "preventing" in the title because I want my PHP application to be as secure as possible. I am wondering if anyone has any better ways to prevent session ...
2
votes
1answer
102 views

How to detect, inspect and delete a super cookie of a specific website? [closed]

Definition of supercookie from the paper I am reading: "Supercookies settle in parts of the system that are harder to erase, and include the usage of Flash Local Shared Objects and IE Local ...
2
votes
2answers
158 views

Is Google 2-factor “Remember this Computer” secure against adversaries with root access?

This question concerns the type of 2-factor authentication implemented by Google Accounts. The response to this question describes securing transfer of the secret key via a secure cookie. But what ...
2
votes
2answers
576 views

Stealing document.cookie from Google domain, is this a privacy breach?

When I am logged into the Google and prints document.cookie I could see following cookies. My doubt is what all an attacker can do if attacker could steal these cookies of the victim using exploiting ...
2
votes
3answers
305 views

Flash cookie and man-in-the-middle

I am using the Scala Play web framework. In it, there is a PLAY_FLASH cookie used to flash messages to the user (it's a cookie so it will still work after several redirects). I put HTML in the cookie ...
2
votes
2answers
1k views

Token based authentication under http

I am doing a token based authentication but facing some security problems. In the system, a user will login as follows: Type username and password to login in a https login page If the login is ...
2
votes
2answers
269 views

Are these two ways safe?

I have two scenarios and want to know if each is secure or which risk there are. Number One: If the User has the edit Link (edit/[md5hash]) he can edit a post. The editkey (the hash) is in an form ...
2
votes
2answers
720 views

HTTPOnly Cookies: Security Depends on Client Cooperation?

I've been implementing HTTPOnly cookie-based session handling and have some questions about what HTTPOnly means. I realise it's a flag that gets passed around in the HTTP header when setting cookies. ...
2
votes
1answer
82 views

What are the risks of allowing the storage of persistent cookies on your system?

Usually, the risks of persistent cookies are described from the point-of-view of the site, not the user: if you implement persistent cookies the probability of someone stealing a cookie and using it ...
2
votes
1answer
142 views

Proxied server requests + forwarding authentication info in a secure fashion

We are using PassportJS with a couple of Node.js servers - Passport is just a library that is popular for Node.js server authentication - but we have some questions about how to use Passport with "...
2
votes
2answers
184 views

The Need for includeSubDomains in HSTS RFC

I am trying to understand the includeSubDomains directive in the HTTP Strict Transport Security standard. In particular section 14.4 of RFC 6797 confuse me. Point 2. says The HTTP request sent to ...
2
votes
1answer
2k views

Sharing RSA Public Key for decrypting JWT amongst Load Balanced servers

I'm trying to implement a cookie-less authentication mechanism for a web API that is stateless on the server (does not store session tokens) and can be load balanced across several servers. I have ...
2
votes
1answer
215 views

How can non-secure or non-HTTP-only cookie affect security of an HSTS website?

If a website is running on HSTS and it is setting about 20 cookies. Out of those 20 cookies 15 are both secure and HTTP-only and remaining 5 are neither. In this scenario, in what ways can we ...
2
votes
1answer
190 views

Conversant, CNAME, Cookies, and PCI complaince

We have been asked to evaluate Conversant Tracking. http://www.conversantmedia.com/solutions/enterprise-solutions From what I can tell its pretty straight forward tracking, like google re-marketing, ...
2
votes
1answer
229 views

Would it be possible to use cookie to store SSL Client Certificate?

Lately, I was reading that article about SSL client certificate. Why is nobody using SSL Client Certificate? The answer was to that question was : In the current state, this excellent idea is ...
2
votes
1answer
385 views

How do websites tracker cookies and beacon work?

Could someone please enlighten me, either on a technical level or high level if that detail is not feasible, on how tracker cookies and beacons work. Particularly, how information on my browsing ...
2
votes
2answers
785 views

Bypass cookie validation

I have discovered that a web application allows the setting of certain cookie values through request parameters. Each request param results in a separate Set-Cookie header. i.e. a request like this: /...
2
votes
2answers
561 views

Can sessions be handled securely with cookies disabled?

I've been doing some reading here about session ID handling, and have learned that it's generally a bad idea to include a session ID in the HTML source code, and/or on the query string. For example Is ...
2
votes
1answer
640 views

UUID and Open_id in cookie 'good' enough?

I am using Tomcat 7, jsp to build a small website. I am new to security and it is a school project so using Spring Security is not an option. I am attempting to store UUID and Open_id in the clients ...
2
votes
2answers
155 views

I delete cookies file in chrome but i'm still logged in after I restart Chrome

I'm using linux and google chrome as browser. I know that cookeis are stored at /home/my_name/.config/google-chrome/Default/Cookies. I deleted this file but it seems like when I restart Chrome and ...
2
votes
2answers
107 views

Can 3rd party JavaScript libraries access the http headers of the hosting html page

So, I have website, it uses a cookie stored in the http header of the downloaded html document to maintain the session while the end user is logged on and accessing there 'secure' data. This webpage ...
2
votes
1answer
148 views

How do banks determine when to ask for two factor authentication?

I was playing around with trying to figure out how my bank knows when to give me a two factor authentication prompt. I had originally thought it was based on my cookies and maybe my IP address. But ...
2
votes
2answers
3k views

Exploiting a potential ASP.NET web app Session Fixation vulnerability

I am pen-testing an ASP.NET application that is exhibiting Session Fixation behavior. The application is using cookie based sessions. Basically: When you land on the page no Session cookie is ...
2
votes
2answers
140 views

What can websites learn about me when I disable cookies?

I run Google Chrome with Ghostery, Privacy Badger, AdBlock and cookies disabled. If, theoretically, Ghostery is blocking all the trackers, AdBlock blocks ads, and I don't accept cookies, what can the ...
2
votes
1answer
520 views

Cookie Tossing explained

Can someone explain to me what cookie tossing is? and how it can be used to hijack someone's session? and also how can we prevent it? I am a bit confused about this subject.
2
votes
1answer
244 views

Session Cookie HttpOnly Set After Initial Server Response Showing as Vulnerable

Is a session cookie set without HttpOnly at first, but added before the client browser finishes rendering, still considered vulnerable? The scanner test I need to satisfy believes so, but is this a ...
2
votes
1answer
583 views

Active Directory: Should Workstations be separated from servers to protect from related domain hacks?

How should I protect domain joined hosts in the same AD domain from the Related Domain Cookie Attack? Suppose there is an AD forest called example.com. This company has a variety of internal and ...
2
votes
1answer
417 views

How does IE's Privacy options affect javascript's ability to save cookies?

I'm looking at IE's privacy options screen and am trying to figure out how it breaks javascript, workarounds to that, and how I can gracefully degrade my user experience. Is there a guide that ...
2
votes
0answers
74 views

If I clear my browsing data, is HSTS protection removed?

I've seen that if I delete cookies and other data on Google Chrome, SSLStrip+ works successfully on those web sites that are not included in the browser list. Is it because HSTS data is cleared too?