Questions tagged [firefox]

Firefox is a Web browser that is smaller, faster, and in some ways more secure than the Netscape browser from which much of its code was derived.

Filter by
Sorted by
Tagged with
0
votes
1answer
31 views

Can Firefox master password dialog be used for phishing my master password?

I have used master password to protect my login information in Firefox. Whenever I first start Firefox and open a page requiring authentication information Firefox asks my master password before ...
0
votes
0answers
16 views

Store login credentials securely with JavaScript [duplicate]

Today I have a web application that needs to store the user's email and password, so that when he opens the login screen, the authentication is done automatically. For this, our application saves the ...
0
votes
0answers
35 views

Is my HTTPS connection still encrypted if the SSL certificate has expired? [duplicate]

When I tried to visit a particular website using Mozilla Firefox, I got a SEC_ERROR_EXPIRED_CERTIFICATE error because the website's SSL certificate has expired. If I decide to click on the "...
1
vote
0answers
29 views

How Firefox and Google password managers protect your password [duplicate]

Based in this post in Google Chrome help they claim that they encrypt my username and password with a secret key known only to my device. What is the algorithm used to generate this secret which is ...
0
votes
2answers
70 views

What's the risk of keyboard languages being sent via Content-Language header?

The Android versions of Firefox and Chrome/Chromium and all derivatives (Ungoogled Chromium, Bromite, Brave) by default insert all the user's configured keyboard input languages into the Accept-...
2
votes
1answer
217 views

With HTTPS-only mode in Firefox, may I still need HTTPS Eveywhere addon?

Firefox has a built-in toggle in settings to enforce HTTPS-Only mode. When enabled, the browser attempts to redirect to HTTPS every time and, if fails, blocks access to the website in the same way ...
0
votes
0answers
41 views

How is Firefox Lockwise able to decrypt saved logins without primary password? [duplicate]

I was wondering how Firefox Lockwise is able to securely encrypt and decrypt saved logins across devices without using a primary password? As far as I understand, regardless of whether an encryption ...
0
votes
1answer
90 views

Firefox add-ons: Which permission(s) govern the ability to make additional network requests?

I'm considering installing a Firefox add-on (browser extension) which requests the permission Access your data for all websites. This add-on is not on the list of Mozilla's "actively monitored&...
0
votes
0answers
167 views

BING default search enginge Firefox malware?

Whenever I open Firefox, it starts with the BING search engine. The default search enginge of Firefox was set to "MyFireSearch" which I changed to Google. I also have no extensions that ...
4
votes
1answer
201 views

How does Firefox protect Logins and Credit Card Data?

I have a question about how Firefox protects Login information (Website passwords) on the one hand and Credit Card data on the other. I noticed that there are two different approaches to how Login ...
0
votes
1answer
142 views

Suspicious connections by Firefox [closed]

In the middle of the night, I happened to look at Firefox's network traffic and I found this odd set of connections to k8s-poma-traefik-ext-fe-prod-iz1-lxa.poinfra.server.lan Does anyone know what ...
0
votes
0answers
23 views

Why does Firefox claim a site has a "Potential Security Risk"? [duplicate]

When trying to go to https://www.pfizerpapconnect.com, the Firefox web browser claims there is a "Potential Security Risk" and pops up a page recommending to not proceed. Is there a real ...
2
votes
0answers
245 views

How to harden portable Tor Browser installation (SELinux, sandbox)?

tldr How can I define a SELinux policy, that limits filesystem access of portable Tor Browser to its installation directory, say /home/user/.local/opt/tor-browser_en-US? How might Tor Browser be ...
4
votes
1answer
547 views

How did Firefox get my passwords?

I just installed Firefox browser, while I have previously used Google Chrome as my main browser. I am using Windows 10. During the installation and setup process for Firefox, I was given the option to ...
3
votes
1answer
468 views

Why does Firefox no longer recognise certificates issued by Multicert / Camerfirma?

Today I noticed that Firefox 88.0 beta (on macOS) is rejecting TLS certificates for many Portuguese websites – including most government websites – with the error SEC_ERROR_UNKNOWN_ISSUER. Example ...
1
vote
1answer
124 views

Are saved passwords in browsers secure, when stored online?

Where are saved passwords stored if you login to a browser, so they sync whenever you login to that browser on another device. Where and how do Google, Firefox etc. save the passwords? Obviously its ...
0
votes
0answers
129 views

Global variables accessible to other websites opened in same tab

Today I found a security issue with Chrome (or maybe other browsers I haven't tested yet). What happens is that once you open a site and then open another site in the same tab, the previous site's ...
7
votes
0answers
221 views

What exactly is CVE-2021-23978 (from MSFA2021-08 in Mozilla Firefox)?

A number of vulnerabilities were fixed in Firefox that was fixed in the latest version. MSFA2021-08 describes it only as "memory issues that may be exploitable", and doesn't give any ...
91
votes
6answers
14k views

Why does my IT department block Firefox?

We received a message from the IT bods this week stating: Summary of the issue: IT will disabling and blocking the use of the browser Firefox next Thursday the 03.12.20 on all IT managed devices. Due ...
2
votes
0answers
120 views

What is the threat-model of a malicious browser-extension accessing the data of *another browser-extension* that is security-critical?

Modern password-managers are moving towards a "fully-in-the-browser" model (see: historical RCE on LastPass, and now 1Password is also moving towards 1Password X as "the future" ...
1
vote
1answer
655 views

Firefox pretending to update itself, but actually not doing it, and thus being a risk for security - what am I missing?

I am a long-time Firefox user and remember that usually the UAC prompt popped up when Firefox updated itself. Some months ago (or is it years?), Firefox obviously changed the way it updates itself: I ...
6
votes
2answers
280 views

What impact does an installed extension have on the browser fingerprint (uniqueness)?

Motivation I want to develop a custom, local Firefox extension and investigate, if its installation has any impact on the browser fingerprint. Background Some time (years?) ago, there were articles ...
1
vote
0answers
81 views

What, if anything, are the consequences of temporarily enabling and then disabling WebRTC in Firefox?

For security and privacy purposes, it's best to keep WebRTC disabled if you aren't using it. Firefox makes this easy by simply setting media.peerconnection.enabled to false. Due to COVID-19, the use ...
4
votes
1answer
725 views

Effect of Firefox's "Responsive Design Mode" on the browser's fingerprint

Today I switched ON the "Responsive Design Mode" under the "Web Developer" Section of the Firefox menu, and from the dropdown menu selected "iPhone X/XS iOS 12". So now ...
1
vote
0answers
445 views

CA certificate somehow not taken by browsers on android [closed]

This is a follow up question related to this answer. In short: I am importing the self signed Root CA certificate into android system via Settings -> Security -> Trusted Credentials -> ...
0
votes
1answer
356 views

DNS spoofing protection in Chrome and Firefox

I'm using hostapd to setup a wireless access point and dnsmasq as a DNS/DHCP server. I defined in dnsmasq to reply with the IP of the access point (10.0.10.1) when it receives a query for www....
2
votes
2answers
1k views

Where to put SAN

Where SAN means: Subject Alternative Name. I feel I have a basic misunderstanding in which certificate the SAN stuff shall go: ca or server or both or what? It might be 3 Years or more in the past, ...
0
votes
1answer
258 views

What can be the risks of opening mdb files in windows using microsoft access? [closed]

I have download file.mdb from internet. When I click to open it, firefox tells me that mdb is an executable file and can harm my computer! How can this file harm my computer and is it just for mdb ...
1
vote
1answer
345 views

Firefox does not trust Burp Suite's certificates in case of accessing sharepoint online

I want to investigate requests/responses between firefox and some private mysite.sharepoint.com site which I could access using my microsoft's email and password. For this I've configured Burp Suite'...
1
vote
1answer
162 views

Why did browser authors not make 127.0.0.1/localhost-hosted webpages skip the referrer?

For a long time, I was so convinced that 127.0.0.1/localhost-hosted webpages, that is, with URLs such as: http://127.0.0.1/MySecretControlPanel/sensitive.php?stuff=goes&here=dude ... did not ...
0
votes
0answers
71 views

Domain Joined computer doesn't browser properly with any website with Let's Encrypt CA cert

Navigating to any website with Let's Encrypt CA cert and even after enabling the HTTPS Everywhere addon, I'm getting "Your connection is not private". Getting this error from all the browser except ...
0
votes
1answer
87 views

Are security scrutinies conducted by independent agencies on open source software like Ubuntu or Mozilla Firefox?

Any intentional malware injected into open source software by the same people who are developing them may eventually get known as the source code is open to the public. However, if the code base is ...
3
votes
2answers
504 views

Effect of Script tag inside HTML comment

I recently participated in a CTF and solution of that CTF is based on this weird behavior of browser. In First case when I am including script tag inside an HTML comment and without closing that ...
0
votes
2answers
231 views

Firefox: What would be more secure/private: storing session cookies or saving password in the browser?

I am wondering, assuming the latest version of Firefox, which of the following options would be more preferable security-wise (e.g. assess and/or password to user account will be stolen) and which one ...
1
vote
1answer
691 views

What are the sources of “SEC_ERROR_REUSED_ISSUER_AND_SERIAL” errors when using self-signed x509 Certificates in PKCS#12 files?

As part of an internal Client/Server application, I have created my own (self-signed) Certificate Authority (CA), as well as both Client and Server certificates signed by my CA. Loading my CA ...
0
votes
1answer
512 views

Unknown Google Account Signed into Browser

An unknown Google account is signed into Firefox on my Arch Linux machine. The computer is in my apartment (where I live alone) and I lock the screen when I leave. Some observations: The unknown ...
0
votes
1answer
167 views

Youtube/Firefox access to my history

I recently noticed something weird. From time to time I watch on YouTube (Firefox) something political. In my case 'lastweektonight'(left) and 'StevenCrowder'(right), (because it is fun to see, where ...
0
votes
0answers
88 views

Customize default Prompt options (camera to share) when I trigger camera in Firefox with code development

I am having 2 cameras in my PC. When I try to trigger camera in firefox it always opens a permission prompt box with a webcam options. But I don't want to show the camera options in the prompt box. So ...
2
votes
0answers
781 views

Firefox SSL_ERROR_BAD_CERT_DOMAIN but the names are correct

Today I've create new certificates for my server (since the old ones were about to expire) using openssl with my own CA. I also used that as an oportunity to change the server's name because it was ...
5
votes
3answers
2k views

Why are many US Department of Defense certificates not trusted by Firefox?

There are a number of US Department of Defense (DoD) websites that I need to access on a regular basis (e.g., https://ataaps.csd.disa.mil/ and https://web.mail.mil) that Firefox issues a Warning: ...
40
votes
1answer
6k views

Can a browser extension (Chrome, Firefox, etc.) read the web console log?

I realized that my bank handles sensitive information in the web console log, so my concern is if any browser extension could read the log?
0
votes
2answers
816 views

Why does Firefox (version 71.0 (64-bit)) indicate “weak encryption” but Google Chrome (Version 79.0.3945.88) does not?

I read that Mozilla uses its own trust certificate store but does "weak encryption" have anything to do with whether the browser trusts the certificate? Has it got anything to do with the signature ...
11
votes
1answer
491 views

What would happen if some random webpage made an Ajax request for http://127.0.0.1/private.txt?

I run a localhost-only webserver (PHP's built-in one) for all my admin panels and whatnot on my machine. I'm worried that, if any random webpage has a JavaScript snippet which makes an Ajax call to ...
7
votes
3answers
872 views

Browser setups to stay safe from malware and unwanted stuff

I have to set up a browser to surf the internet. I'm trying to stay safe from malware as much as possible. (I already know that there's no way to stay 100% safe.) My idea is to use Firefox with these ...
0
votes
1answer
425 views

Purpose of Decrypting & Scanning HTTPS traffic

Navigating to the below URL link from the Mozilla Firefox and entering some website link and clicking on View, displays certificate Viewer chrome://pippki/content/exceptionDialog.xul After enabling ...
10
votes
5answers
17k views

Is Firefox's Lockwise secure?

I have lot's of passwords saved in Firefox Password Manager, now called Lockwise. I recently installed Opera Browser on my machine. It somehow managed to import all the history-data and form fields, ...
2
votes
1answer
216 views

Browser copy function overridden silently, is this security risk?

I came across a site which overrides copy functionality and injects current page url as paste value. I was trying to select couple of words and instead it copied the page link. Simple developer tools ...
9
votes
1answer
1k views

How well do current browsers handle certificate revocation?

I am a Firefox user and recently stumbled upon the Liu, Yabing, et al. "An end-to-end measurement of certificate revocation in the web's PKI." Proceedings of the 2015 Internet Measurement Conference. ...
2
votes
1answer
319 views

Is encrypting the FireFox folder with EFS protecting saved passwords in case of someone accessing the hard drive?

What I want to do: Use the "save password" feature in FireFox (on Windows 10) without using FireFox's master password feature. What I'm afraid of: Someone stealing my laptop or getting access to my ...
0
votes
1answer
229 views

Is there any way to mitigate against a compromised CA as a client on Firefox?

If I, as a client, connect to a server and there is a malicious certificate authority, how can the client protect against this CA and still connect to the site? If this isn't possible, how can the ...

1
2 3 4 5
7