Questions tagged [web]
The web tag has no usage guidance.
0
votes
0answers
126 views
Is it safe to download pictures from websites like booru or imgur? [closed]
Let's say someone has uploaded an Jpeg file with an exploit inside. Will booru (or imgur) re-encode it or not? And if not, will the user, who has downloaded this file and opened it be safe?
0
votes
0answers
39 views
Web Site Access - Port Whitelisting
I am able to access a certain website https://buzzlightyear.acme.com:68080 from within a corporate network (Obviously the default https port 443 has been allowed in the windows firewall of the machine ...
0
votes
2answers
110 views
Identifying a script used for vulnerability scan
The logs of a server are showing a great number of 404 responses in a short time. Apparently somebody used a tool/script to look for known vulnerabilities by combining the server and part of the path ...
0
votes
0answers
45 views
IP instead of domain name for non-public web client-server application [closed]
I am building an infrastucture that needs communication between a client and a server connected to the internet network. It is not a public web application, moreover privacy or any kind of encryption ...
0
votes
0answers
131 views
'=' 'OR' SQL Injection Login Bypass Question [duplicate]
I was testing SQLI Cheatsheets on a vulnerable test site.
This particular injection '=' 'OR' seems to work on the login page.
Why does that injection work? What's the back-end SQL code, if I could ...
0
votes
2answers
88 views
Cross Site Scripting href=/\evil
I've seen
<base href=/\evil>
and
<base href=//0>
as a vector to use XSS. Could someone make an example using these vectors and explain me if "/\" is the same as http:// or has some ...
1
vote
1answer
107 views
Websocket Authentication at Opening Handshake Sufficient?
Suppose TLS is used and a session ID was negotiated using standard HTTP mechanisms. With the websocket opening handshake, this session ID is also transferred in the HTTP header.
Suppose the websocket ...
0
votes
1answer
68 views
Published URL File APP.CSS
I am crossing an analysis on a website and while fuzzing and testing I came across the below URL:
https//www.****.**.*/content/css/app.css
Which generated the below output:
/* Minification failed. ...
0
votes
1answer
189 views
How is Instagram detecting me and blocking me each and every time I try to create a new account through different medium?
I have two Instagram accounts, one is mine (Account A) and the other (Account B) is for random images with my pets and a lot of other stuff.
Account B is private and has been from start, recently I ...
49
votes
5answers
11k views
What exploit are these user agents trying to use?
I just looked at my user agent tracking page on my site (archived on Yandex) and I noticed these user agents. I believe they are an attempt to exploit my server (Nginx with PHP). The 1 in front of it ...
1
vote
3answers
112 views
Best practices to prevent logging of LDAP credentials by intermediate apps
I am working on transitioning our project management tool (PMT) to use LDAP authentication instead of native auth that's currently in use.
We also have some internal web-based tools that interface ...
0
votes
1answer
78 views
How Hathaway ISP shows renewal reminder in non secure website?
I am using prepaid broadband plan of Hathaway (in India). Few more days are left for the plan to get expired and I observed the below screenshot.
This popup comes only when I visit any non-secure ...
1
vote
0answers
119 views
Is there a way to exploit file_get_contents that has a prepended website?
suppose I have the following code that will display an image. The name of the image is supplied by the user as follows:
https://example.com/image.php?image=cat.jpg
My image.php file contains
$...
0
votes
1answer
34 views
CSRF protection for an email subscription website - are there any risks of having it turned off?
I have a main website with an email subscription form. And my other websites where I have an email capture form. A user enters their email on those website and via POST he's redirected to the main ...
1
vote
0answers
50 views
How to determine if a website has been hijacked?
I noticed that the URL of a website I sometimes visit was redirecting to a new URL. I noticed this through a tool that I use that does not actually load the new URL.
I was surprised by this change, ...
0
votes
0answers
25 views
Does limiting the length of a password help prevent DoS attacks? [duplicate]
I was told that you can DoS a server with unlimited password length because of the time that it would take to hash it. But isn't the password hashed on the client's side before leaving the user's ...
-1
votes
1answer
57 views
what are steps to do in order to secure my appli web [closed]
I'm asked to secure an appli web and I don't know really which steps I can follow to secure my appli web.
0
votes
0answers
33 views
Is it possible to contract a virus on Ubuntu/Debian from an Apache Nutch web crawl?
For the fourth time now I have contracted a virus while doing a large web crawl on webmd.com. I'm not certain that this is where the virus is coming from but I don't see what else it could be.
Is it ...
2
votes
2answers
48 views
Is it ok to send plain text credentials in a XHR GET request?
When testing my api server, I often requested the website http://domain.tld/api/?username=john&password=123456 to test things and after a while of course, my browser would autocomplete the url, ...
0
votes
0answers
36 views
How do I verify that a user on a remote system has root access?
Let's say an anonymous user somewhere on the internet claims that he or she is the admin/root user of the system/server behind some public IP Address.
I was thinking, what can a root user do that a ...
0
votes
2answers
51 views
How to detect website active routes?
I'm building a website using Laravel and I'm just thinking about security.
I would like to know if there is a way for attacker to detect all active web routes for a website ?
For example:
http://...
0
votes
1answer
173 views
What scenario does CORS protect against?
My understanding of the same origin policy is that it prevents scripts from making requests to resources outside of the domain from which they originated. One motivation of this is to prevent a ...
1
vote
1answer
78 views
What kind of redirect of websites is this? [closed]
Some websites can redirect you, but they're not using http 301 or 302. After that the url will be changed and you can't go back to the previous page using your web browser's back button. For example, ...
1
vote
1answer
345 views
Securing Flask admin pages
We've been developing a Flask app for a customer and a part of the agreement was that "customer admins" would be allowed to access Flask admin page to manage users, roles and business entities.
The ...
-1
votes
1answer
483 views
Does an employer see if you try to access a blocked site? [duplicate]
Today while browsing on my mobile phone connected to my employer's wifi, I clicked on the link to a tumblr page. I then got an error message saying the web filter had blocked the page deeming it ...
1
vote
0answers
195 views
How to find no of columns using sql injection
I'm new to web penetration testing and when I tried to test a website, I found that when I entered ' in the text box, I would get the following error:
OraOLEDB error '80004005'
ORA-01756: quoted ...
1
vote
0answers
78 views
Webauthn and TLS channel binding
my understanding is that webauthn supports a variety of authentication schemes --not necessarily FIDO2/CTAP ; is that true? if so what is the api at webauthn that provides the hook?
TLS channel ...
0
votes
1answer
371 views
Is telegram SMS login secure?
TL;DR: Can
1) A random hacker access my telegram account by entering my phone number on the official web.telegram.org authentication portal and hijhacking the SMS code they send? or
2) A "telegram ...
57
votes
1answer
4k views
Does a client certificate identify the owner to unrelated websites?
If I install a client certificate in my browser, which websites can see any information about this client certificate or the CA that issued it?
I once visited an ssl diagnostic site that immediately ...
1
vote
1answer
27 views
Liquid security scenario
I'm a part of a small team of undergraduate developers taking a course on developing Arduino and Raspberry Pi applications with a focus on the Internet of Things. Our current task is to imagine, ...
0
votes
1answer
39 views
Why did a subdomain from a trusted website download a file?
I clicked on a link for the subdomain of a trusted website (the subdomain slackin.brilliant.org of the website brilliant.org), and instead of being directed to another page, a file called "download" ...
2
votes
1answer
260 views
Why does my Chrome still trust Thawte certificate?
Thawte certificates are supposed to be invalid since Chrome 70, but I have Chrome 70.0.3538.102 and it accepts certificate of this site just fine. Does anyone know, why that is? Should I be worried?
4
votes
2answers
186 views
Telegram (or other messenger) message as second factor in 2FA
Is it safe to send code via messenger bot and use it as second factor in auth? The scheme looks like the same as SMS one. A user opens application or look at a push notification and use the code. Why ...
1
vote
1answer
55 views
Real life scenario for remote file execution
This is a commonly demonstrated attack because it is easy to explain and understand.
The premise is that the victim does something like (oversimplified PHP example):
include( $_GET['file']);
And ...
0
votes
1answer
49 views
Remotely included script cannot set session variables
I'm trying to simulate a remote file inclusion attack on my local web server as part of a course I am taking. I got the idea of being able to "logging" in on a website I set up without really logging ...
4
votes
3answers
1k views
Is hijacking a webcam after visiting a website a plausible threat?
(I made a throwaway to ask this question, since this situation is pretty embarrassing)
Earlier today I started receiving emails threatening to send embarrassing video of me to all my contacts unless ...
74
votes
4answers
10k views
What is the purpose of (ab)using the redirect page of my website for dubious URLs?
My website has a redirect page with the format https://my.site/redirect?deeplink=https://foo.bar&...
The redirect is implemented in Javascript, so when you request the site, you get a 200 and ...
0
votes
3answers
168 views
What are the Pros and Cons of allowing users to stay logged in to a web application?
To become a more well-rounded developer, having a better understanding of security concerns and best practices will help me endeavor to build web-apps that are both user-friendly as well as secure.
I'...
3
votes
1answer
460 views
Why Same origin policy is based on host-name and not on IP?
Same origin policy is to restrict one page to access another document from accessing data. Because they have different origin where SOP define an origin as follows.
An origin is defineed as ...
2
votes
0answers
196 views
SQL injection possible with parameter that seems to only accept integers
a similar question to this was already asked but it is not the same case. I am talking about this one Is SQL injection possible via integer?
In my case, I already have the confirmation of this ...
0
votes
1answer
83 views
What is ScriptSafe's “Client Rectangles” and what information does it leak?
Just wondering how this one affects the privacy and security because it breaks a lot of sites displaying images for example.
-3
votes
2answers
88 views
Can any one pls help me understand this code and what vulnerabilities exists? [closed]
what Vulnerabilities exists???
0
votes
1answer
198 views
Is it possible to do XSS attack in server side programming language?
As far I know, when using 3rd party library of client side programming language/Javascript, you are vulnerable to XSS attack.
Is it also vulnerable when using 3rd party library in server programming ...
3
votes
1answer
500 views
Is some kind of CSRF possible using img/script tag to read sensitive information
Let's say i have an API at https://mysite/api/getSensitiveData that:
Uses GET
Protected with cookie authentication
Returns JSON with some sensitive data
A bad guy creates a site on his server that ...
5
votes
2answers
528 views
Avoid being hacked with brute-force attack
During the last week, our company website has been under a weird brute-force, this attack actually led to hacking an admin account.
Our website is a wordpress site. The attacker keeps performing POST ...
0
votes
1answer
59 views
Does Windows Authentication Use Secured Connection
I am writing a .NET Web API that will be used in an enterprise environment where users authentication themselves using their active directory credentials, so I am using "Windows Authentication" in IIS ...
2
votes
0answers
593 views
Web API authentication with Kerberos
We are implementing a web application that uses Kerberos for authentication. In the browser there is no concerns, so it works perfect. Now we need to supply a subset of web application services via ...
1
vote
0answers
222 views
Brute Forcing a aspx form using Hydra
I am trying to brute force a Login.aspx page.
It has two text fields - txt_Username and txt_Password
The form submit however looks like this:
<input type="submit" name="btn_Login" value="Login" ...
-2
votes
1answer
151 views
DNS Request makes Google Image Unsafe to Use
I always thought the images from Google image search were under the domain of Google URLs.
As long as you don’t click the image to visit the original site that hosts that picture, you were with ...
3
votes
1answer
1k views
How does CleanBrowsing DNS servers make 'Youtube, Google and Bing forced to SafeMode'?
Quote from Activating CleanBrowsing
Activating CleanBrowsing is pretty simple and only takes 5 minutes. We
do our work via DNS, so you have to switch your DNS servers to go
through our Network ...
