Questions tagged [header]
The header tag has no usage guidance.
134
questions
0
votes
0
answers
18
views
IP address from headers (Gmail/outlook mobile app) [duplicate]
My question isn't a duplicate. I know that the IP is leaked in the computer desktop version of outlook. But from I'm able to tell, the mobile version didn't leak it.
I need to make sure that I'm right ...
- 101
0
votes
0
answers
43
views
The most safe combination for Content Security Policy
I need high security for my app, so I have to add security headers for my views. However, I'm not entirely sure I understood the CSP header correctly (specifically its parameters). Is my combination ...
- 307
3
votes
1
answer
178
views
Are HTTP security headers only for web browsers?
There are some HTTP security headers in the world of cyber security of web applications. These are e.g.:
X-Content-Type-Options
X-Frame-Options
Content-Security-Policy
Referrer-Policy
Strict-...
- 519
2
votes
1
answer
117
views
Does a proper Email ALG (i.e. Email-Proxy) alter/remove the local Email-Header information?
Does a proper Email ALG (i.e. Email-Proxy) alter/remove the local Email-Header information so the recipient does NOT get information about the locally used IP addresses?
Example:
Received: from mail....
- 21
14
votes
4
answers
7k
views
Is having the name of web server software in HTTP response header a serious problem?
How serious a security problem is it to have the name of the web server in the HTTP header (Apache, Nginx etc.)?
I am discussing this with a system administrator and he told me that deleting version ...
- 142
1
vote
1
answer
50
views
Security headers: Are they needed on subsequent requests (eg. Scripts, Images) after they have been sent on the main HTML request?
I had a discussion with PenTesters at my company today, who have said that security headers, like for example Content-Security-Policy, Strict-Transport-Security, Referrer-Policy and Permissions-Policy,...
3
votes
1
answer
143
views
Is there a reason for a server-side limit on the number of HTTP headers allowed for each request?
The security team at my company has set a limit on the number of headers a HTTP request can contain (not header size, but an actual hard count limit on the number of headers).
A vendor has added a few ...
- 133
1
vote
1
answer
852
views
Why set max-age=0 if no-store is already set?
A result of a recent pentest suggested that the HTTP Cache-Control Header max-age=0 should be set when no-store is set.
As I understand cache control, no-store is the strictest we can set; the page ...
- 153
0
votes
0
answers
33
views
Is different X-Forwarded-For values per site an indicator for something malicious?
I am using a mobile ISP to access the internet. I noticed something really weird: most sites (e.g. www.whatismyip.com, https://www.iplocation.net/http-browser-header) report my IP as let's say IP A: ...
- 163
0
votes
0
answers
111
views
Headers X-XSS-Protection issue
I want to clear my doubt that Is there any issues coming from adding 'Strict-Transport-Security' and 'X-XSS-Protection' headers ?
Header set Strict-Transport-Security "max-age=10886400;
Header ...
-1
votes
1
answer
351
views
CORS attack using authentication token [closed]
I found a website which is vulnerable to cors.(https://portswigger.net/web-security/cors)
GET /api/requestApiKey HTTP/1.1.
Host: vulnerable-website.com.
Origin: https://evil.com.
AUTHENTICATION: ...
1
vote
0
answers
52
views
Should I set "Ignore" cookie headers flagged from Akamai WAF or change its severity to Informational?
I've been seeing our AppScan tools tagging cookie headers from Akamai in low severity.
Mostly tagged as missing attributes of "HTTPOnly" and "Secure" flag.
The question here is ...
- 11
2
votes
1
answer
193
views
HTTP and HSTS Web Server
If I have HSTS enforced on a web server with HTTPS 443, but HTTP port 80 is still open, does this make HTTP still accessible, or only for the first time before it's added to the browser HSTS list?
I ...
- 23
0
votes
1
answer
393
views
Url only works from the browser it is generated from. Copying it into a Curl Command fails, and gives a 403 error. How can I fix this?
I am doing some web scraping for streaming files, .m3u8 mime type. In this particular instance, I can't create a functional request that does not end up with a 403 Forbidden error.
How to reproduce:
...
2
votes
3
answers
322
views
HttpResponse Headers Information Leakage on Server Error (Verbose Headers)
In the past I have dealt with security issues related to Default Service Banners/Verbose Headers/Information Leakage via HttpResponse Headers. These issues are quite common, and usually look ...
- 161
1
vote
2
answers
324
views
Do relative paths mitigate HTTP Host Header attacks?
I have been researching http host header attacks. There are many examples such as <a href="https://_SERVER['HOST']/support">Contact support</a>. Why would anyone use an absolute ...
0
votes
1
answer
1k
views
Cookies Vs Headers For REST API User Authentication Token
I'm working on a small rest api project with user authentication.
But I'm wondering whether I should store the users authentication token in a header or a cookie.
The general idea is as follows:
User ...
- 3
1
vote
1
answer
829
views
Modifying UserAgent by a proxy?
For learning and testing purposes I'd like to change the UserAgent in the HTTP header.
In the desktop Firefox it is simple: there is an add-on for this task. But on android... it is impossible.
I ...
3
votes
2
answers
164
views
Is mime-sniffing still something to protect against with modern browsers (with X-Content-Type-Options)?
I have read about X-Content-Type-Options and it says often that it protects against IE mime sniffing problems.
I am wondering if in 2021 it is still valid and a problem for modern browsers? In other ...
- 2,257
0
votes
1
answer
226
views
Sending Post Requests Server to Server
I am creating a web application that is sending sensitive data between servers. I need to take user inputted web form data from website 1 (abc.com) and post the data to website 2 (xyz.com/api). ...
- 129
1
vote
2
answers
179
views
Is there way to know what headers can be accepted by HTTP server?
Imagine that there is server required authentication for getting an access to some endpoint.
And developer added some logic to bypass the authentication: if server recieve HTTP header give_me_access=...
- 13
0
votes
1
answer
560
views
Is frame busting javascript required despite x-frame-options
I am using x-frame-options sameorigin header to prevent some of my websites from being loaded in iframes. Is this a foolproof method to prevent iframe loading?
There have been several old threads on ...
- 107
1
vote
1
answer
99
views
Multiple server fields in HTTP Response
Recently, during a pen-testing exercise, I noticed that the target server responded with multiple "Server" fields in the header. I was wondering what it could mean and if oddity is somehow ...
- 626
0
votes
1
answer
164
views
Does an url that redirecting infinitely have any impact to website?
I am testing a bug bounty website, and found an endpoint like www.example.com/infinite. When open it, it keep doing 302 redirect to itself until browser stops it for redirecting too many times.
For ...
- 51
2
votes
3
answers
501
views
Is there any way for a client to view headers set by an NGINX reverse proxy?
I am setting up an NGINX reverse proxy, which sits in front of an API. I would like to use:
proxy_set_header X-Secret-Key ${SECRET_VALUE};
to add a token to the request, which is then read by the API. ...
- 121
1
vote
0
answers
118
views
HTTP: Headers vulnerability still showing after being added
A web vulnerability assessment was done on our web app by a third company that specializes in security,
and we added common headers that we missing, and to check my headers internally before the third ...
- 11
1
vote
1
answer
129
views
Can the Origin header have alphabetical port or parameters in a real-life scenario?
I'm testing this application which is properly validating origin header on the sever side. However, if I add any domain and the expect domain as port, application still consider this valid.
Origin: ...
- 11
1
vote
1
answer
384
views
HTTP Headers: Document Policy vs. Permissions-Policy/Feature-Policy
I'm checking the options to harden my web app by setting the appropriate HTTP headers.
Besides the Content Security Policy (CSP) there are two another approaches: Document Policy and Permissions-...
- 113
2
votes
1
answer
212
views
Should I check Host header or ServerName for CSRF defense when serving behind proxies?
In a CSRF defense based on checking forbidden headers, should I check Origin/Referer header against the ServerName configuration directive, or is it sufficient to simply check against the HTTP Host ...
- 350
2
votes
1
answer
173
views
Content-Secure-Policy headers
I am performing a security assessment on a web application and I found it doesn't have the Content-Security-Policy, but instead it has Content-Secure-Policy. It is literally the first time I'm seeing ...
0
votes
2
answers
167
views
Can we read HTTP cookie value? [closed]
In one of the applications I'm testing, the cookie contains the username (set:cookie: username) in the HTTP header. Is it possible to read these cookie values using any methods? The site uses HTTPS.
0
votes
1
answer
2k
views
Is the IP address of the client present in the email headers for webmail services and for desktop clients?
When I receive an email sent by someone using a webmail service (e.g. Gmail, etc.), I can find the IP address of the sender's email server in the email headers.
But do the email headers also contain ...
- 951
1
vote
0
answers
749
views
Do object-src and base-uri bypasses still work on Content-Security-Policies?
I'm assessing the security level of a webapp and one of the test cases is the CSP header. I always use the Google CSP evaluator to assess the header. Let's consider the following CSP header:
Content-...
- 187
1
vote
3
answers
120
views
Should all the headers reported by securityheaders.io be considered as findings?
A lot of websites scanned with securityheaders.io are missing different headers.
Should all of these headers be reported as findings or just few of them which are more critical?
- 557
0
votes
2
answers
472
views
HTTP Request Smuggling Basics
I am currently trying to learn HTTP Request Smuggling vulnerability to further enhance my pen testing skills. I have watched a couple of videos on Youtube and read articles online regarding it but ...
- 143
1
vote
2
answers
2k
views
IP address leaked in email header?
Can my IP address ever be included in the header of emails I send? Or do email servers never include my IP address in my emails' headers?
- 1,676
1
vote
2
answers
4k
views
Authorization Header in dev tools
My web application need to make call to 3rd party REST API which is protected by Basic authentication on some user click. We are planning to use a technical user for the call.
This will expose the ...
- 275
1
vote
1
answer
729
views
Enabling HTTP Security headers in S/4 Hana web applications
We have 3-4 S/4 HANA applications in our environment and want to enable HTTP Security Headers, but couldn't figure out how to go about it. We then approached SAP directly and even their solutions are ...
- 13
0
votes
1
answer
269
views
How to best limit SQL injection attacks that are being funneled through an Apache proxy I control
I use an Apache proxy to funnel traffic to an IIS server. The IIS server sends me emails if some bad actor attacks my site with an sql injection attack. It captures their IP address, and sends me the ...
- 105
0
votes
0
answers
141
views
What happens if a sender changes the TCP window size over multiple packets that have the same ACK number?
I'm currently doing research on evasion attacks that seek to bypass a Deep-learning based Network Intrusion Detection System.
In order to achieve this, I need to know what the constraints are for the ...
0
votes
1
answer
700
views
CSRF Bypass using User-Agent
This is an unconventional approach of CSRF that I came across while doing the pentest for an Android mobile application. The original request is as follows (NB: Values have been edited):
POST /edit/ ...
- 189
1
vote
1
answer
401
views
Utility of HTTP headers for a REST API
Can somebody confirm me that the HTTP-XXS-protection header and the X-content-type header is useless in the case of a REST api who provide only json to clients ?
Can someone explain me why exaclty ?
...
- 11
4
votes
1
answer
2k
views
Adding Expect-CT header to HTTP response
In the security test report, I have a recommendation to add Expect-CT header to the HTTP response from web application, additionally developers set this to:
Expect-CT: max-age=0, report-uri=
I am ...
- 1,233
-2
votes
2
answers
294
views
Is CSRF possible if i know the value of the authorization bearer token?
If i know the value of bearer token of the victim, can i generate a get csrf page and set a custom Autorization: Bearer [token] header?
- 11
1
vote
2
answers
2k
views
Sending token through GET vs POST
Looking for recommendations for security in sending token (e.g. JWT Token) through a GET vs POST request to the server.
There are two options:
Sending token through Headers as part of HTTP GET ...
- 13
2
votes
1
answer
2k
views
How to determine start and end bytes of LUKS header?
How can I determine the exact start byte and exact end byte of a LUKS header on a block storage device?
I use Linux Unified Key Setup (LUKS) for Full Disk Encryption (FDE), so all of the data on my ...
- 886
9
votes
3
answers
2k
views
Why does Chrome not allow the modification of these headers by extensions?
The Chrome WebRequests API mentions that specific request headers are not available to the onBeforeSendHeaders event, meaning that extensions cannot read and/or modify these headers. Here is an ...
user163495
12
votes
2
answers
3k
views
Secure HTTP Headers - where should be implemented, WAF or code level?
I have a REST API exposed to the Internet and another application with form-based authentication. These apps are behind a Web Application Firewall.
Question is, where I should implement the below ...
- 151
2
votes
1
answer
2k
views
Is there any way to pretend like we are routing our request via cloudflare? [closed]
There is this Web App which uses cloudflare and to bypass certain things I had to find a way to access the actual web server directly. I tried numerous things and finally I think I have found the ...
- 21
0
votes
2
answers
526
views
Is it a security issue that Nginx returns server name in errors?
I have recently sat up an Nginx in a way that makes it not return a Server header and hide the version information from the error pages.
The error page looks like that now (and anyone can provoke it ...
- 2,257