Tagged Questions
2
votes
6answers
215 views
Can one reliably show HTTPS status in browser (not just the lock in the URL bar)?
I'm almost certain this isn't possible, as it would probably be too exploitable, but I wanted to ask the community just in case.
Is there a way to determine and display the state of HTTPS on a page ...
4
votes
3answers
217 views
Are secret URLs secure over HTTPS?
Imagine a service that makes sensitive information available under a secret URL via HTTPS only, without requiring any other authentication. In fact, these are already widespread.
What level of ...
2
votes
1answer
420 views
How does DHE-RSA-AES256-SHA compare to RC4 as the Cipher for SSL?
I read a lot of issue [1] currently stating that RC4 is broken and is at risk.
I just checked my web server (nginx) and it is using the default settings, which is
DHE-RSA-AES256-SHA
How does this ...
3
votes
5answers
300 views
Does the padlock on my browser really indicate a reasonable assurance against eavesdropping?
I know that there have been broken or weak SSL implementations. Do browsers actually have decent standards for what they'll accept and display "the padlock"?
Furthermore, are there any practical ...
5
votes
2answers
157 views
RC4 bias protection with padding in TLS
On the answer to my previous question about RC4 vulnerabilities in TLS, Thomas Pornin gave a great answer, in which he said:
One way to "fix" RC4, which has been suggested many times, is to drop ...
5
votes
4answers
155 views
Threat model for huge warnings on untrusted SSL certificates and no warnings for plain HTTP connections?
Why do untrusted/expired SSL certificates get such a huge warning in modern browsers even with "DO NOT VISIT THIS SITE!" messages, whereas a regular HTTP connection, which is more prone to ...
1
vote
2answers
110 views
What security issues are there when reading cookie with .htaccess?
I have a (hobby) web site that runs only on SSL (i.e., site-wide HTTPS). The site does not deal with finances, social security numbers, or anything of that level of importance. However, I'd like to ...
2
votes
1answer
105 views
What is the “derive” key usage?
Google Chrome gives a lot of SSL information. Here is a screenshot:
Under "Key Usage", what does "Derive" mean?
4
votes
4answers
327 views
Is online banking more secure on iOS than a desktop computer?
Does Apple's iOS provide a more secure environment for online commerce (banking or shopping) than Windows or Mac OS X? Since the only software that can run on iOS must be vetted by Apple, the ...
1
vote
1answer
220 views
IE on Windows 2012 doesn't show certificate or lock icon despite using HTTPS
Can anyone explain why IE on Windows 2012 doesn't show the lock icon despite using HTTPS when visiting the following site?
https://www.microsoft.com/en-us/default.aspx
I am able to see the lock ...
0
votes
1answer
51 views
Can IE be made to imitate the behavior of Chrome's KeyGen element?
Is there any way I can repurpose existing ActiveX controls or functionality to get IE to work with the KeyGen element?
Assistance getting Safari to work with this optional HTML5 spec would be ...
1
vote
3answers
318 views
Do client certificates provide protection against MITM?
I'm looking for a way to protect clients from a MITM attack without using a VPN, and ToR. My thought is that client certificates might do the job, but I'm not entirely sure since not too much server ...
3
votes
3answers
380 views
cookies “secure” flag
How does cookies "secure" attr work to determines whether cookie itself should be included?
e.g.
[HTTP(unencrypted) connection]
1. user has no cookie yet and tries to log in;
2. user logs in ...
2
votes
2answers
191 views
HTTPS Sensitive Information and Caching
I have a website where I need to share a sensitive key with the user. Of course, I'm using HTTPS on the page. The key is put into the HTML server-side in ASP.NET. My concern is, if the user's computer ...
7
votes
4answers
1k 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?
4
votes
2answers
7k views
How to determine if a browser is using an SSL or TLS connection?
I want to know whether my browser is using SSL or TLS connection if I see HTTPS.
I want to know for IE, Firefox, Chrome and Safari. I want to know the protocol version.
3
votes
3answers
344 views
What is the actual security of this login page?
Please visit https://devforums.apple.com
If I visit this site using my Safari 6 web browser, this page does not show the normal security indicator that secure sites normally show.
Does this ...
6
votes
3answers
307 views
How secure is HTTPS with weak ciphersuites?
Today I came across the website https://mtgox.com/, which claimed to be secure because of the Verisign certificate. I checked the certificate out of curiosity (it's the first thing they claim, let's ...
5
votes
2answers
4k views
Is BEAST really fixed in all modern browsers?
BEAST is said to be fixed in all modern browsers:
Chrome and Firefox
IE in Jan 2012
Opera in Dec 2011.
It's also fixed in OpenSSL since 2002.
Do these fixes mean that it's safe to use ciphers in ...
3
votes
1answer
135 views
Client-side cross-site access in SSL environment - when it's still possible to do?
I'm trying to imagine an secure sandboxed environment for an application which is big and unexplored, and may contain backdoors. It would live under chroot/virtual environment with no outgoing ...
5
votes
3answers
667 views
What are potential security risks when using an insecure wireless connection?
If someone is using an insecure wireless connection (for example a hot spot in a coffee shop) does it posse a threat even if the person is using a secure application layer protocol? What I mean by ...
1
vote
1answer
513 views
HTTPS and cache injection
I understand the downside of this attack and what wrong can be done.
But I dont understand how is it done ?
Well, I need to educate myself, any pointers would be useful.
8
votes
2answers
585 views
HSTS extra security over HTTPS
Is HSTS good to use even if my servers are configured to use HTTPS (Even if HTTP is used, the rewrite rules in apache makes it to HTTPS)
Also does HSTS make even the resources like CSS, images to be ...
10
votes
4answers
464 views
Why do browsers warn about mixed content for images?
I'm dealing with a phpBB forum user who wants to set up SSL on their entire site to secure user credentials and "private" parts of the website.
However, they want to preserve the traditional forum ...
-1
votes
2answers
78 views
What happens when and attacker changes the installed public keys in browser
I was reading about SSL. I understood that each browser comes with a predefined set of known public keys,which is then used to authenticate the messages. I was wondering what will happen when a virus ...
3
votes
2answers
1k views
Do most browsers handle mixed encrypted and unencrypted content correctly?
In Google Chrome, when I go to an encrypted page that contains unencrypted content, I get the following pop-down, which allows me to either load or not load the insecure content, making a clear ...
2
votes
1answer
46 views
Does SGC Support reduce HTTPS security?
Server Gated Cryptography is a legacy technology (implemented by obsolete laws) that allows older browsers to establish a SSL session at a higher encryption.
This article says SGC should never be ...
3
votes
4answers
705 views
is using “HTTPS everywhere” extension secure?
I would like to know if one should use 'HTTPS everywhere' extension? is it secure to use it? Are there any better alternatives?
HTTPS Everywhere is a Firefox and Chrome extension that encrypts ...
3
votes
2answers
468 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 ...
2
votes
4answers
309 views
Clients trust my custom CA
I'm sorry if this is a dumb question. I'm new to all this.
I have a large number of users. I need to be able to generate SSL certs for various internal domain names. All of these certs need to be ...
2
votes
1answer
117 views
Browsers and export regs. Is SGC still valid?
I was reading a rather "dated" book on SSL/TLS, which mentions about International Step Up certificates and Microsoft's Server Gated Certificates which were the way arround the US export rules for ...
2
votes
2answers
339 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
2answers
77 views
Does TLS-OBC only improve security of Web Browsers? Does it improve the security of SSH?
I'm studying the TLS-OBC extension and would like to know if it improves security of non Web-based protocols?
Specifically, would it be of any benefit to SSH clients? (version 1 or version 2.x/secsh)
...
4
votes
1answer
131 views
What issues might exist with TLS-OBC's emulation of Browser Certificates?
TLS-OBC is an RFC proposal that increases SSL/TLS security by using certificates on both ends of the TLS connection. What's special here is that the client is permitted to dynamically create a local, ...
3
votes
1answer
1k views
Why does Safari seem to be accepting an HTTPS connection every other browser rejects?
This question is inspired by a bug/issue in recent Linksys router firmware. Essentially, something has changed recently that's preventing HTTPS access to the web admin on current generation Linksys ...
5
votes
2answers
3k views
How to thwart sslstrip attack?
I need help understanding the dynamics of an sslstrip attack. I'm using it to test the security of a site that I own. I can successfully sniff the victim (in this case, myself) credentials over the ...
3
votes
1answer
297 views
Apple Developer Account Hacked?
I just did a fresh install of Snow Leopard on a newly-formatted hard drive.
Logged into the iPhone Developer Page with Google Chrome (latest build) here:
...
3
votes
2answers
2k views
Can Cookies Without the Secure Flag be Stolen, even when only accessed via HTTPS?
Is it possible to capture the cookies used by HTTPS site when cookies don't have secure flag set.
Suppose the site is https://www.example.com.
http://www.example.com does not show up, also ...
7
votes
5answers
2k views
Does HTTPS Everywhere defend me against sslsniff-like attacks?
http://www.thoughtcrime.org/software/sslsniff/
If I have a domain on my HTTPS Everywhere list, so that theoretically it could be only visited via an HTTPS connection in my Firefox, then could an ...
2
votes
2answers
729 views
Secure SSL Session from losing itself into unsecure http
I've seen some implementations of HTTPS SSL and, as a visitor, forced to rely to a lot of those. What would a secure implementation look like and where can one expect problems? I expect the installer ...
4
votes
4answers
2k views
Benefits of identifying clients based upon the “X-Forwarded-For” or similar HTTP header in addition to Client IP
The X-Forwarded-For header is used by some HTTP proxies to identify the IP address of the client. The wiki page (linked above) mentions that ISPs may use this header as well.
In addition there are a ...
1
vote
2answers
83 views
How can I force certain the webclient to honor or remember certain parameters from the webserver?
HTTPS is subject to several MITM attacks, that is clear. However I think it would be helpful to the ITSec crowd if there was a way to force a certain browser behaviour when accessing known-trusted ...
3
votes
1answer
160 views
How secure is a https website? [duplicate]
Possible Duplicate:
Does an established ssl connection mean a line is really secure
When I visit a website -- say, https://ebanking.pick-your-bank.com -- my browser (fully patched version ...
3
votes
1answer
149 views
How will users know if their session is DNSSec protected or not?
There is definite security value in having DNSSec-verified connections, however I have yet to see software indicate if the connection is secure.
Ultimately I would like my users to recognize that ...
12
votes
4answers
2k views
TLS 1.0 JavaScript injection vulnerability (BEAST): what to do client-side?
With the alleged SSL/TLS vulnerabilities used by the BEAST exploit, there seems to be a security gap between TLS versions; TLS 1.0 being the problematic one but still the only option for many sites.
...
9
votes
2answers
2k views
Are there any statistics about webservers and browsers TLS support?
From Hackers break SSL encryption used by millions of sites:
The vulnerability resides in versions 1.0 and earlier of TLS, or transport layer security, the successor to the secure sockets layer ...
9
votes
1answer
1k views
enable browser caching with HTTPS
I understand that sensitive data should not be cached (ie, you dont want to cache an HTML file with all of your bank account details in it), but there are some things that HTTPS protected sites should ...
5
votes
3answers
201 views
How safe are copies of Firefox that are on various Mozilla mirror sites?
If I end up downloading a .dmg or .exe (depending on OS) installer from some mirror site, how can I be sure that a virus or trojan or spyware has not been added?
I don't see any mechanism for ...
5
votes
5answers
446 views
Can I improve website security by storing SSL Keys in DNS? Is DNSSec required? Are threat models available?
In light of recent attacks on SSL/TLS communication, people have been asking about ways to improve the security of SSL webserver communication. Several great solutions have been mentioned in the ...
13
votes
4answers
1k views
Why does Facebook serve several SSL certificates?
Facebook seems to be alternately serving two SSL certificates, one from DigiCert and one from VeriSign. There are only two reasons for this that I can think of:
They're in the middle of a ...
