A web browser is an application which uses http and related protocols to retrieve HTML and XML data from servers. As the web has become a critical source of information and communication, web browsers have become a critical component in information request, transfer, and management.

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26 views

What happens if a page with an invalid SSL cert responds with a 302 redirect to a page with a valid cert? Do you still get the warning?

Alice navigates to https://example.com. https://example.com delivers an invalid certificate. https://example.com 302 redirects to https://www.example.com https://www.example.com delivers a valid ...
0
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1answer
69 views

Open source alternatives to tamper data

I'm developing a browser(firefox) plug-in which essentially checks for malicious input. My current approach is to store all input fields sent in GET/POST requests, try to heuristically determine ...
0
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1answer
26 views

Add certificate authority to one browser only

For testing purposes, I'd like to add a "CA" to the list of trusted-CA's of one browser - and use it only for testing. I want to make sure that it won't get added to the computer's trusted CA list. ...
0
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1answer
180 views

Why is 'avast! Web/Mail Shield Root' listed as CA for google.com?

I just noticed something weird in my browser: the certificate for www.google.com has been issued by avast! Web/Mail Shield Root. Should I be worried? I am using avast! Antivirus so it's probably a ...
5
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1answer
381 views

Google Chrome browser warning for goo.gl

I am getting the solid red screen Chrome browser malware warning for Google's own URL shortening website, goo.gl as well as other sites such as bit.ly and delicious.com when I try to navigate there ...
12
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6answers
11k views

Where does SSL encryption take place?

I checked the data transmission of an HTTPS website (gmail.com) using Firebug. But I can't see any encryption to my submitted data (username and password). Where does SSL encryption take place?
2
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1answer
277 views

Questions on reflected file download (RFD) attack

I read this article, and the whitepaper by security researcher Oren Hafif which mentions the following salient points: RFD, like many other Web attacks, begins by sending a malicious link to a ...
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1answer
33 views

Tools or scripts to scrape browser credentials and data?

I'm exploiting machines in a network and I'm currently trying to scrape data to further my testing from the compromised machines. There's no SOE build so i've got a variety of different environments. ...
7
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4answers
478 views

My ISP is injecting strange codes to every website I visit

Here's the code at the bottom of every page: <script type="text/javascript">if(self==top){var idc_glo_url = (location.protocol=="https:" ? "https://" : "http://");var idc_glo_r = ...
1
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1answer
77 views

How does a browser choose which certificate to use if my web server has multiple certificates?

I'm using Apache 2.4, with two certificates, one RSA signed by CACert, and one ECC self-signed. Neither of these certificates provide a path to a broswer-trusted root certificate. My question is ...
126
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9answers
33k views

Is Adblock (Plus) a security risk?

My email-provider's website (http://www.gmx.de) recently started linking to the (German) site http://www.browsersicherheit.info/ which basically claims that due to its capabilities to modify a site's ...
0
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2answers
78 views

Browser page “Not resolved” page hijacked by yandex [closed]

Any domain that cannot be resolved defaults to yandex right now, on any browser on my system. Helper objects or extensions are not installed. It turns out that the ISP (Turk Telekom) is employing ...
1
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0answers
46 views

Reflected file download Scenario

I'm making a Java-based web application that is intentionally vulnerable to Reflected File Download (RDF). White paper is here I read the requirements of reflected file download vulnerability as ...
8
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1answer
635 views

Browser password manager vs third party password manager

How usable and secure are 3rd-party password managers like Roboform, Lastpass, and 1password from the built-in Chrome and Mozilla password managers? What are the advantages of using 3rd-party password ...
2
votes
1answer
53 views

Understanding cross origing requests from a web page

Reading up the XSS attacks on wiki I see that it says an injected script could send data/cookies to the attackers site. How is this achieved? Are there no checks/restrictions on cross origin requests ...
3
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1answer
105 views

Regarding Windows password and Chromes Remember password Feature

Google Chrome browser helps in password management by prompting users to remember their passwords for the websites. These saved passwords can be accessed from the browsers "settings" menu, and to do ...
2
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1answer
93 views

While logged in to Google etc., can a malicious site discover my ID?

If I visited a malicious site while being logged in to Google, Hotmail, Facebook, or Twitter in the same browser window, how hard is it for the site to discover my account IDs without my explicit ...
36
votes
4answers
10k views

Why is the same origin policy so important?

I can't really fully understand what same origin domain means. I know it means that when getting a resource from another domain (say a JS file) it will run from the context of the domain that serves ...
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0answers
72 views

Is this XSS filter i.e <[space][0-9a-z]/> can be bypassed?

I was testing a web application that had an stored XSS vulnerability. After reporting the project team, they came up with a filter <[space][a-z1-9]/> (for example will be converted into < img ...
4
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3answers
11k views

Can a website still detect my real MAC address even if I use different virtual machine each time I visit the website?

Suppose I use a proxy and a different virtual machine each time I visit a particular website, will a website still be able to detect my MAC address and/or uniquely identify me? Assume that the website ...
2
votes
3answers
168 views

How to prevent popping up a login dialogue using a malicious hotlinked image and HTTP Basic Auth header?

While using Firefox to browse my forums, I noticed that a malicious user posted an image (via hotlinking, not by uploading to my server) with the extension .png which complies with the forum rules ...
2
votes
2answers
75 views

Steps after getting hit with malware or browser exploits on Xubuntu

Well, today I was browsing the internet and I suddenly got redirected to a chinese hosted malware site and firefox started going crazy. I checked the url on virustotal with my phone and it found other ...
3
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2answers
35 views

Why browsers implement stricter policy for local files

I have a problem viewing HTML/JS/CSS files generated on disk. Specifically, several calls in javascript are blocked by Google Chrome. I googled and found an answer here: ...
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1answer
85 views

How does https check md5, sha-1 and sha-2 fingerprints?

When a https site shows multiple finger prints, i.e.: md5 and sha1, or sha256 and sha1, how does the browser check? is it both just the "strongest" or whatever is convenient? This question arose ...
1
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1answer
138 views

Browser gives access to root directory through “/” [closed]

If I put a '/' on my browser I have full access of my root directory. I have tried the same thing on another computer and it didn't work. So, I'm trying not to be paranoid but this is too strange. I ...
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1answer
117 views

Web site blocked by Windows defender and is marked as unsafe in IE

I posted this originally on Drupal Stack Exchange, and it was recommended that I try here for an answer. Here is the original question: Visiting my Drupal 7 site just now with IE 11, I get this ...
1
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1answer
100 views

Is it dangerous to allow clients to run JavaScript on a Server

On a webpage I have been working on, we can archive certain webpages for a user. The user can give an address and this webpage is than visited on the server and archived. Lately, I noticed that ...
3
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5answers
158 views

Windows: Any method to enforce user confirmation before the browser opens a URL requested by an external desktop app?

A robust outgoing firewall will protect against desktop applications directly connecting to the internet without your permission. However, as the browser is a generally authorized application for ...
4
votes
4answers
1k views

What XSS attacks doesn't “Reflective XSS Protection” defeat?

Its been quite a while since I have played with cross site scripting vulnerabilities but today I came across a website today that was crying out to be tested for a basic XSS vulnerability. So ...
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votes
3answers
116 views

Why doesn't Google Safe Browsing block the IP addresses of malicious websites?

If you visit a blocked domain name like www.thelotbet.cn from Google Chrome, Opera or Firefox, you will get a warning from Google Safe Browsing that this is a malicious website. But if you visit the ...
2
votes
6answers
3k views

How can I know that the CA certificates in my computer have not been spoofed?

As far as I know, the browser contains the certificates of several CA. When I access http://gmail.com, the site says it is Gmail, it exposes a certificate signed by one of the CA I have in my ...
1
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0answers
74 views

Hidden TrueCrypt Container containing the Tor Browser Bundle

I'm considering using a hidden TrueCrypt container to keep a Tor browser bundle copy which could save bookmarks. In this case, would the TBB leave traces on the OS it started with? E.g. I use my ...
6
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2answers
2k views

How can end-users detect malicious attempts at SSL spoofing when the network already has an authorized SSL proxy?

I'm working on one client's network where they have enabled HTTPS authority spoofing on their proxy. This allows them to effectively perform a man-in-the-middle attack to decipher all outgoing ...
3
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3answers
129 views

How is the same origin policy causing my PoC to fail when I don't need to read return data?

I'm performing an authorized vulnerability analysis on a custom web service and have discovered a CSRF vulnerability. Due to there not being form tokens coupled with the service not checking for the ...
1
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2answers
205 views

Will Ad Block Plus block the ads that give someone Cryptowall 2.0?

Now I already know that making sure your browser plugins are either non-existent or up-to-date is one way of being on the safe side against ransomeware like Cryptowall 2.0; but since clicking ads are ...
6
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2answers
2k views

Force a connection via SSL3 to detect POODLE vulnerability

I have been reading up on the POODLE vulnerability. From my understanding, and correct me if I am wrong, you need to allow connections to be made via SSLv3 on the server. The server I am currently ...
3
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0answers
66 views

How does a browser manage secure sessions and store session keys?

I am interested in how a browser manages secure sessions. As I understand it this is the scenario when logging into a google account: 1) Browser (B) and google Server (S) perform a handshake to ...
3
votes
2answers
577 views

Pop-ups in Private Browsing?

The new Firefox private browsing mode allows for both non/private browsing windows at the same time. So if a website pops up a new window (which will be in non private mode) can it read stored data? ...
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2answers
58 views

Which web browser supports a proxy in proxy configuration? [closed]

Normally you are forced to use a corporate proxy. This is necessary for the company to protect against the internet. But a side effect is, that the internet usage of every proxy user can be monitored ...
0
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2answers
58 views

Detect Different Machine using Browser [closed]

Some web apps like Facebook and Gmail detect the first time we try to login from a device. Assuming that a browser can't read machine name, and MAC ADDRESS. What kind of variables are they collecting ...
4
votes
4answers
1k views

Is it a security risk to use an unknown web browser?

The more I read about TLS, the more I get convinced that the browser is the weakest link in the chain. I know that nobody agrees with me as there are no articles about that in Google, but it looks ...
3
votes
1answer
38 views

Enabling Unsigned ActiveX

A third-party wants to provide a web app which they say only works if we enable unsigned ActiveX (unfortunately users are required to use IE). I understand what 'signing' is, as well as the basic ...
3
votes
1answer
146 views

How will SHA1 deprecation affect internal CA's?

I am hearing that the SHA1 Deprecation notices from MS/CHROME only apply to certs that are a part of a public trusted root program. This makes one believe that IE will have new logic built in to allow ...
5
votes
3answers
944 views

Can CSS file contain malware? [duplicate]

I know that javascript files can contain malware. However, I am not so sure about CSS files. They only affect how the page is displayed, right? I know that css files can be used for clickjacking but I ...
3
votes
2answers
1k views

UTF-7 XSS attacks in modern browsers

I've recently read about utf-7 XSS-attacks (i.e. Ned Batchelders article at http://nedbatchelder.com/blog/200704/xss_with_utf7.html) but could not get any UTF-7 attack to work in modern browsers. (I ...
1
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1answer
50 views

using multiple Firefox profiles to increase security

I am wondering whether it would increase security in any significant way, if I would use two separate Firefox profiles, one for normal browsing and the other for private/secure websites, such as my ...
1
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2answers
45 views

Xubuntu guest session security

lately I've been using the guest session on my xubuntu install because I am lazy and I was wondering what the security implications can be on the rest of the system if there is a web browser exploit ...
2
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2answers
43 views

Question regarding browser windows when integrating with 3rd party payment software

I've been told that when integrating with a 3rd party payment gateway, the other website's window should not be opened in an iFrame or a separate window - that the current application window itself ...
31
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2answers
3k views

Why do browsers enforce the same-origin security policy on iframes?

I did a small test on Chrome (V37) today. I created a small page and loaded it to the browser: <!DOCTYPE html> <html> <head> <title>Untitled Document</title> ...
31
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9answers
4k views

Why is it a security problem not to update one's browser?

Is it in general a security problem not to update your browser. Firefox constantly prompts me to update my browser, but how dangerous is it to not update? As part of this question, I would like to ...