Questions tagged [web]

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1
vote
2answers
120 views

Can random subdomain naming enhance security?

I have a bunch of services which I want to group under a subdomain. Somehow 2-factor authentication is not possible to identify the users of these services. I have a thought to have randomly named ...
0
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2answers
266 views

Can my oppressive government trace my Twitter activity and detect me?

I want to be active on Twitter against our oppressive government. Can my government trace and detect me? Twitter is banned here and we must use VPNs. I use Outline (Shadowsocks) mostly. Is there any ...
-3
votes
2answers
128 views

Can arch Linux be used for pentesting [closed]

I currently use very much Ubuntu and Kali from the Debian family for penetration testing (Network and Apps) and I want to know if anybody has tested arch Linux or other distros for penetration testing....
32
votes
3answers
7k views

How are short passwords not safe if you limit the number of attempts?

On all web services that require passwords, like gmail, you are asked to set a long password. Like 8 characters or more. The reason being higher security. But the same services limit the number of ...
0
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1answer
171 views

Why is the Web so complicated? [closed]

Hope it does not sound as a surprise to anyone that modern Web and its security, with the many layers and technologies, is pretty confusing and difficult to learn well. For someone with a good ...
0
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3answers
62 views

Is it safe to hash passwords on the users device?

I don't know much about hashing, but I noticed a (relatively reputable) site logging me into my account by sending the url parameter "hash=longStringIAssumeisTheHashOfMyPassword". The point of ...
2
votes
2answers
96 views

Can someone perform DDoS on my VPS even if it is only accessible through SSH?

Can someone perform DDoS on my VPS even if I have not installed any webserver software like apache, nginx, etc.? Since I have not installed any webserver software, it's not really available to the ...
1
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0answers
79 views

Blocking URL brute-forcing on my server

Every day my server receives many GET requests in search of security holes. In other words, they are trying a list of words in search of a hole. for example: http://myapp.com/phpmyadmin http://...
1
vote
1answer
48 views

Do you really need an access token and refresh token?

When using a single page application, in what way is access token + refresh token more secure than a single token in a cookie with SameSite: strict. Given the browser supports SameSite. I completely ...
1
vote
1answer
358 views

Bypassing NET::ERR_CERT_DATE_INVALID

When I try to access the Openmailbox web site, Google Chrome returns a NET::ERR_CERT_DATE_INVALID error. The details state that "openmailbox.org normally uses encryption to protect your information. ...
1
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0answers
64 views

Wordpress site request to /wp-includes/Text/Diff/ yields open directory listing

Someone requested my site's (Wordpress/Apache) 'includes' directory: 122.51.0.219 - - [03/Oct/2019:18:36:15] "GET /wp-includes/Text/Diff/ HTTP/1.1" 200 736 "-" "-" Noticing the 200 response, I hit ...
1
vote
1answer
218 views

Is it possible to gain RCE from Arbitrary file write by an unprivileged user?

I am pentesting a PHP website running on Apache in a Ubuntu server. I found a vulnerability that allows me to write files to the target system. I know it's possible to write a php shell to the HTTP ...
1
vote
1answer
147 views

PCI Compliance 8.2.1, 8.2.3, 8.2.4 - Which user passwords is this talking about?

Say you have an e-commerce site that falls under the SAQ A-EP standard, due to extra content on the same page as the iframe that takes the credit card info. This used to fall under the SAQ A ...
0
votes
1answer
46 views

How effective is Expect-CT against content inspection in an enterprise context?

HPKP was used to ensure that a browser accepts to connect to a site only if the public key he has on file is the one presented by the target site. I saw it as a way to make deep content inspection ...
1
vote
1answer
171 views

Difficulty understanding SOP and CSRF

As said here, a CSRF attack has little to do with SOP. However, on the OWASP CSRF page it is said that Fortunately, this request will not be executed by modern web browsers thanks to same-origin ...
-1
votes
1answer
392 views

How is this allowing me to bypass recaptcha [closed]

I was testing rate limit on the login page of a site. It was captcha protected. I could not even intercept the POST request on burp, so from Google Chrome I looked at the logs and in its POST request, ...
0
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0answers
112 views

What tools in SecurityOnion can be used for web application intrusion logfiles in csv format?

I have some web server logs from a breach. Is there a tool in SecurityOnion where I can upload the log files in csv format and have some sort of behavior-driven, static IDS/IPS identify when a breach ...
0
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0answers
160 views

How to make wfuzz perform a request to retrieve CSRF token to include in the main request?

How to make wfuzz perform a request to retrieve CSRF token to include in the main request? I've previously used patator, which includes the options before_url and before_fgrep for performing a ...
5
votes
0answers
53 views

XXE OOB Large File Extraction

Most of examples for extracting files through XXE OOB (Out of Band) sets up a listening HTTP server and listens to incoming request on the URL requested. However, since the URL length is limited to ...
2
votes
1answer
1k views

Why does the file “shell.php.jpg” can execute as a php file but “shell.jpg” cannot?

I am learning about file upload vulnerabilities using DVWA. After cranking the website's security level to High, the website checks both the post request's content type & file extension, so in ...
1
vote
1answer
49 views

How to secure embedded code containing REST api call

I am making a Google Analytics like service where you embed generated code into your website and it tracks certain data. I have a backend REST api, but I am not sure how to securely implement a call ...
1
vote
0answers
34 views

How to know what version of extensions are used in joomla-web-site from user's point of view?

The problem is: I'm a user and I'm to find out what version of extensions(modules, plugins and components) are used on Joomla-site. In simple cases the version is already written,like here: ...
1
vote
2answers
106 views

Non SSL website with external SSL secured service

I'm working with site that is served via HTTP. Authentication service is external and served via HTTPS. I'm not sure that this isn't security concern that is website is not using SSL.
0
votes
1answer
164 views

When should you give up on attempting a xss on part of a website? [closed]

I'm wondering when do you give up on some type of user input to exploit? What are the things that go through your head and that you check off, that makes you think that the input is properly sanitized?...
0
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0answers
57 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
124 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
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0answers
138 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
113 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 ...
2
votes
1answer
418 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
81 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
477 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 ...
50
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
149 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 ...
1
vote
0answers
227 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
43 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
65 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
67 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
39 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
185 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
39 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
208 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://...
1
vote
1answer
365 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
101 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
528 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
5k 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
282 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
101 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
2answers
718 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 ...