Cloudbleed Bug Leaks Sensitive Cloudflare Customer Data

The Cloudflare content delivery network for months has been leaking customer data, everything from private messages to encryption keys and credentials belonging to users of some of the Internet’s biggest properties. The vulnerability has been addressed, Cloudflare CTO John Graham-Cumming said, bu...

Serious Bug Exposes Sensitive Data From Millions Sites Sitting Behind CloudFlare

A severe security vulnerability has been discovered in the CloudFlare content delivery network that has caused big-name websites to expose private session keys and other sensitive data. CloudFlare, a content delivery network CDN and web security provider that helps optimize safety and performance...

Finding Ticketbleed

Ticketbleed CVE-2016-9244 is a software vulnerability in the TLS stack of certain F5 products that allows a remote attacker to extract up to 31 bytes of uninitialized memory at a time, which can contain any kind of random sensitive information, like in Heartbleed. If you suspect you might be...

Go Time #32 - Hellogopher, whosthere?

I joined Erik St. Martin, Carlisia Pinto and Brian Ketelsen for episode 32 of the Go Time podcast to chat about Hellogopher, whosthere whoami.filippo.io, $GOPATH, TLS 1.3, Cloudflare's secret reverse proxy, and more. Go Time 32 — Hellogopher, whosthere? with Filippo Valsorda hellogopher — "just...

WordPress 4.7.0 / 4.7.1 REST API Privilege Escalation

!/usr/bin/env python ''' WordPress 4.7.0-4.7.1 REST API Post privilege escalation / defacement exploit @dustyfresh Date: 02-01-2017 Original vuln disclosed by Sucuri's research team Reference: https://blog.sucuri.net/2017/02/content-injection-vulnerability-wordpress-rest-api.html...

WordPress 4.7.0 / 4.7.1 REST API Privilege Escalation Exploit

WordPress versions 4.7.0 and 4.7.1 REST API post privilege escalation and defacement exploit. !/usr/bin/env python ''' WordPress 4.7.0-4.7.1 REST API Post privilege escalation / defacement exploit @dustyfresh Date: 02-01-2017 Original vuln disclosed by Sucuri's research team Reference:...

Cisco Patches Critical Flaw in WebEx Chrome Plugin

A vulnerability in the Cisco WebEx Chrome Plugin, used by tens of millions for web conferencing in business environments, exposed computers to remote code execution. Cisco has begun releasing updates that patch the flaw, details of which were disclosed Monday by Google Project Zero researcher Tav...

Cloudflare Shares National Security Letter It Received in 2013

Thanks to the lifting of a gag order, on Tuesday security firm Cloudflare was finally able to post a National Security Letter it received from the Federal Bureau of Investigation back in 2013. Cloudflare’s counsel Kenneth R. Carter acknowledged the lifting of the order and said the letter is part...

So you want to expose Go on the Internet

I was asked to contribute a post to the excellent Gopher Academy advent series. I took the occasion to write down what I learned deploying a Go service on the Cloudflare edge. The result is a catalogue of what you need to know before you drop NGINX from in front of your Go server. The net/http pa...

Cloudflare: [http2.cloudflare.com] Open Redirect

PoC https://http2.cloudflare.com/%5cblackfan.ru HTTP Response http HTTP/1.1 301 Moved Permanently ... location: /\blackfan.ru/...

Half of Chrome Pageloads are HTTPS

First it was Mozilla, and now Google is the latest to confirm that encryption is inching closer toward becoming a standard building block for websites and web applications. Google reported yesterday that more than half of pages loaded on desktop versions of the Chrome browser are being done so ov...

Mozilla Turning TLS 1.3 On By Default With Firefox 52

When Mozilla ships Firefox 52, on or around March 7, 2017, the browser will come with the cryptographic protocol TLS 1.3 on by default. Martin Thomson, a principle engineer at Mozilla broke the news Wednesday in an email to Mozilla Development Platform members. “TLS 1.3 removes old and unsafe...

Free SSL Sparks Unprecedented Growth in Encrypted Traffic

If recent telemetry from Mozilla is indeed representative of the Internet, then it would appear that half of all traffic in transit is encrypted, a more than 10 percent jump from last December. The emergence of free Certificate Authorities such as Let’s Encrypt, and similar gratis HTTPS certifica...

BlockChain.info Domain Hijacked; Site Goes Down; 8 Million Bitcoin Wallets Inaccessible

UPDATE: The site is back and working. Blockchain team released a statement via Twitter, which has been added at the end of this article. If you are fascinated with the idea of digital currency, then you might have heard about BlockChain.Info. It’s Down! Yes, Blockchain.info, the world's most...

IoT Botnet Uses HTTP Traffic to DDoS Targets

The IoT botnet behind some of the largest publicly recorded DDoS attacks is flooding its targets with HTTP traffic, generating more than one million requests per second in some cases, in order to bring down web applications. The attacks were recorded prior to the release of the source code fuelin...

Legal Robot: Cloudflare issue: Error 521 Ray ID: 2e7ea7f706ea4056 • 2016-09-25 12:59:55 UTC Web server is down

Error 521 Ray ID: 2e7ea7f706ea4056 • 2016-09-25 12:59:55 UTC Web server is down Cloudflare issue : http://legalrobot-uat.com/ https://tools.pingdom.com/!/dJuXU5/http://legalrobot-uat.com/...

An overview of TLS 1.3

I presented TLS 1.3 to the CloudFlare London office. Why it's faster, how it works, why it's safer, what's clever about it. The talk is recorded and comes with colored diagrams. There's a transcript on the CloudFlare blog. Update: you might want to watch my 33c3 talk on the same topic instead. An...

SecNews: DOM based XSS in search functionality

Overview === Search query is inserted into the HTML of the page without proper encoding. Specifically, a single-quote is not html-encoded albeit escaped, even twice, which allows the attacker to break out of the HTML attribute and inject arbitrary tags. html curl -s...

WordPress CloudFlare plugin has multiple cross-site scripting vulnerabilities

WordPress is the WordPress Software Foundation's set of blogging platform developed using the PHP language. cloudFlare is one of the CDN Content Delivery Network acceleration service plug-in. WordPress CloudFlare plugin version 1.3.20 has multiple cross-site scripting vulnerabilities. An attacker...

Identify Web Application Firewall: WAFW00F

WAFW00F Fingerprints and Identify Web Application Firewall WAF products WAFW00F is a Python tool to help you fingerprint and identify Web Application Firewall WAF products. It is an active reconnaissance tool as it actually connects to the web server, but it starts out with a normal HTTP response...