GitLab: Stored DOM XSS via Mermaid chart

Prologue Gitlab supports Mermaid as part of GFM to allow users to generate diagrams and flowcharts from text. In version 8.6.0, Mermaid added a support of directives to add more control over stylesthemes applied to the diagrams. You can read more about how this works here:...

Horner Automation Cscape CSP File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Horner Automation Cscape. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsi...

Remediation and Hardening Strategies for Microsoft 365 to Defend Against UNC2452

UPDATE Oct. 28, 2021: Mandiant has recently observed targeted threat actors using EWS impersonation via the ApplicationImpersonation role to maintain persistent access to mailboxes in victim environments. Once the threat actor has access to this role, its abuse is hard to detect and provides the...

Doppler VDP: Stored XSS in [https://dashboard.doppler.com/workplace/*/logs] pages

Summary: I have found a stored XSS vulnerability in the following config setting page. https://dashboard.doppler.com/workplace//projects/example-project/configs/dev/logs When you invite other users to the workspace, the xss could be used to exploit other users also. Steps To Reproduce: 1 . Visit...

GitLab: Stored XSS in repository file viewer

Summary There exists XSS in swagger-ui version used in GitLab open API viewer. The XSS exists due to the old version of DOMpurify used in swagger-ui that allows an attacker can inject any HTML elements with any attributes except script tag on the page. The XSS in POC requires 1 click anywhere on...

CVE-2020-26958

The CVE-2020-26958 issue is a MIME-type handling flaw: Firefox did not block script execution when responses with incorrect MIME types were intercepted and cached via a ServiceWorker, enabling a cross-site script inclusion or CSP bypass. Affected products are Firefox (non-ESR) < 83, Firefox ES...

Content-Security Policy Bypass

chromium is vulnerable to CSP bypass. Incorrect handling of CSP enforcement during navigations in Blink allows a remote attacker to bypass content security policy via a malicious HTML page...

Chromium 83 - Full CSP Bypass

Title: Chromium 83 - Full CSP Bypass Date: 02/09/2020 Exploit Author: Gal Weizman Vendor Homepage: https://www.chromium.org/ Software Link: https://download-chromium.appspot.com/ Version: 83 Tested On: Mac OS, Windows, iPhone, Android CVE: CVE-2020-6519 function var payload = top.SUCCESS = true;...

Chromium 83 - Full CSP Bypass Exploit

Title: Chromium 83 - Full CSP Bypass Date: 02/09/2020 Exploit Author: Gal Weizman Vendor Homepage: https://www.chromium.org/ Software Link: https://download-chromium.appspot.com/ Version: 83 Tested On: Mac OS, Windows, iPhone, Android CVE: CVE-2020-6519 function var payload = top.SUCCESS = true;...

Chromium 83 CSP Bypass

Title: Chromium 83 - Full CSP Bypass Date: 02/09/2020 Exploit Author: Gal Weizman Vendor Homepage: https://www.chromium.org/ Software Link: https://download-chromium.appspot.com/ Version: 83 Tested On: Mac OS, Windows, iPhone, Android CVE: CVE-2020-6519 function var payload = top.SUCCESS = true;...

Mozilla: Requests intercepted through ServiceWorkers lacked MIME type restrictions

Firefox did not block execution of scripts with incorrect MIME types when the response was intercepted and cached through a ServiceWorker. This could lead to a cross-site script inclusion vulnerability, or a Content Security Policy bypass. This vulnerability affects Firefox 83, Firefox ESR 78.5,...

Debian DLA-2432-1 : jupyter-notebook security update

Several vulnerabilities have been discovered in jupyter-notebook. CVE-2018-8768 A maliciously forged notebook file can bypass sanitization to execute JavaScript in the notebook context. Specifically, invalid HTML is 'fixed' by jQuery after sanitization, making it dangerous. CVE-2018-19351 allows...

BugPoC: XSS PoC for the wacky.buggywebsite.com challenge

Summary: https://wacky.buggywebsite.com/frame.html is vulnerable to DOM-based XSS. Steps To Reproduce: 1. Navigate to https://oembed.dev.ipwnedyour.net/wacky.buggywebsite.com.xss.html 1. Verify the document's origin is displayed in an alert box. PoC code details: The PoC page at...

BugPoC: Solution for XSS challenge wacky.buggywebsite.com

Summary: Found a HTML injection in https://wacky.buggywebsite.com/frame.html?param=Injected Bypasswing CSP : CSP : script-src 'nonce-txjohfomwjdo' 'strict-dynamic'; frame-src 'self'; object-src 'none'; Then found a vuln code in https://wacky.buggywebsite.com/frame.html js window.fileIntegrity =...

BugPoC: [BugPOC and Amazon XSS CTF writeup] A CSP Bypass Story

Summary/Description: There were quite multiple restrictions imposed while executing JavaScript on the website. I have divided them into three segments which are explained below Bypassing the iframe loading restriction The URL https://wacky.buggywebsite.com/frame.html?param=Hello,%20World when...

BugPoC: csp bypass leads to xss on wacky.buggywebsite.com

Summary: report will be uploaded later - need some sleeps █████████ ███ Steps To Reproduce: PoC above Thanks for the challenge. I tried to use bugpoc for everything but ended up using aws to host the js file - seemed fitting as well and served the purpose. F1065889 Impact taking over all the whac...

BugPoC: Solution to the XSS Challenge

Summary: This challenge is very tricky and advanced. I have reached a part where I can execute my JS code, but that payload is blocked as of now by "allow-modals" missing value in the "sandbox" attribute. Following is a better explanation of where I am right now. Steps To Reproduce: 1. Keep the...

CVE-2020-9361

CryptoPro CSP through 5.0.0.10004 on 64-bit platforms allows local users with the SeChangeNotifyPrivilege right to cause denial of service because user-mode input is mishandled during process creation...

CVE-2020-9331

CryptoPro CSP through 5.0.0.10004 on 32-bit platforms allows Local Privilege Escalation by local users with the SeChangeNotifyPrivilege right because user-mode input is mishandled during process creation. An attacker can write arbitrary data to an arbitrary location in the kernel's address space...

CVE-2020-9331

CryptoPro CSP through 5.0.0.10004 on 32-bit platforms allows Local Privilege Escalation by local users with the SeChangeNotifyPrivilege right because user-mode input is mishandled during process creation. An attacker can write arbitrary data to an arbitrary location in the kernel's address space...