Cloudflare Public Bug Bounty: Origin IP address disclosure through Pingora response header

HTTP responses to cached files served by the Pingora proxy revealed Origin IP address information. An attacker could trigger this misbehaviour by crafting a request with a malformed Range header. The attack was successful under conditions where Cloudflare cache was in REVALIDATED state, the...

Cloudflare Public Bug Bounty: Using special IPv4-mapped IPv6 addresses to bypass local IP ban

Vulnerability description not provided...

Cloudflare Public Bug Bounty: 💥💥Crash report -Cloudflare WARP doesn't verify text length in "Excluded Host" name input data💥💥

Vulnerability description not provided...

Robin Banks Phishing Service for Cybercriminals Returns with Russian Server

A phishing-as-a-service PhaaS platform known as Robin Banks has relocated its attack infrastructure to DDoS-Guard, a Russian provider of bulletproof hosting services. The switch comes after "Cloudflare disassociated Robin Banks phishing infrastructure from its services, causing a multi-day...

Node.js: Take over subdomain undici.nodejs.org.cdn.cloudflare.net

Hello, this is a pretty serious security issue in some contexts, so please act as soon as possible Summary: I just went to undici.nodejs.org, and I've also checked the IP of the main domain it goes to cdn.cloudflare.net which means if it's not added it can be added to any github account your...

Server-side attacks, C&C in public clouds and other MDR cases we observed

Introduction This report describes several interesting incidents observed by the Kaspersky Managed Detection and Response MDR team. The goal of the report is to inform our customers about techniques used by attackers. We hope that learning about the attacks that took place in the wild helps you t...

OctoRPKI crashes when max iterations is reached

Impact Attackers can create long chains of CAs that would lead to OctoRPKI exceeding its max iterations parameter. In consequence it would cause the program to crash, preventing it from finishing the validation and leading to a denial of service. Credits to Donika Mirdita and Haya Shulman -...

Denial Of Service (DoS)

github.com/cloudflare/cfrpki is vulnerable to denial of service. The vulnerability exists because the validationLoop function in octorpki.go exceeds the max iterations parameter when creating long chains of CAs, allowing an attacker to crash the application...

Twilio Reveals Another Breach from the Same Hackers Behind the August Hack

Communication services provider Twilio this week disclosed that it experienced another "brief security incident" in June 2022 perpetrated by the same threat actor behind the August hack that resulted in unauthorized access of customer information. The security event occurred on June 29, 2022, the...

Cloudflare Public Bug Bounty: Extraction of Pages build scripts, config values, tokens, etc. via symlinks

A vulnerability was discovered in Pages build scripts that allowed malicious actors to extract build source/configuration and environment variables via symlinks due to broader permission set on certain folders within the filesystem structure. The issue was remediated by tightening permissions on...

CVE-2022-3320 Bypassing Cloudflare Zero Trust policies using warp-cli set-custom-endpoint command

It was possible to bypass policies configured for Zero Trust Secure Web Gateway by using warp-cli 'set-custom-endpoint' subcommand. Using this command with an unreachable endpoint caused the WARP Client to disconnect and allowed bypassing administrative restrictions on a Zero Trust enrolled...

CVE-2022-3320 Bypassing Cloudflare Zero Trust policies using warp-cli set-custom-endpoint command

It was possible to bypass policies configured for Zero Trust Secure Web Gateway by using warp-cli 'set-custom-endpoint' subcommand. Using this command with an unreachable endpoint caused the WARP Client to disconnect and allowed bypassing administrative restrictions on a Zero Trust enrolled...

CVE-2022-3321

CVE-2022-3321 affects the Cloudflare WARP iOS client. The issue arises when a user enables both “Disable for cellular networks” and “Disable for Wi‑Fi networks” in the app settings, which causes the WARP client to disconnect and allows bypassing restrictions and policies enforced by the Zero Trus...

Cloudflare WARP 安全漏洞

Cloudflare WARP Cloudflare Vpn is a client application for secure connections from Cloudflare, Inc. in the United States. A security vulnerability exists in Cloudflare WARP Zero Trust Secure Web Gateway, which stems from an attacker's ability to disconnect the WARP client and bypass the "lock WAR...

Cloudflare OctoRPKI 安全漏洞

Cloudflare OctoRPKI is an RPKI toolkit for the Cloudflare platform from Cloudflare, Inc. in the United States. A security vulnerability exists in Cloudflare OctoRPKI. An attacker exploiting this vulnerability could create an overly long CA chain, causing OctoRPKI to exceed its maximum iteration...

Cloudflare WARP 安全漏洞

Cloudflare WARP Cloudflare Vpn is a client application for secure connectivity from Cloudflare, Inc. in the United States. A security vulnerability exists in Cloudflare WARP Zero Trust Secure Web Gateway, which stems from the fact that an attacker can bypass its configuration policy by using the...

Cloudflare WARP 数据伪造问题漏洞

Cloudflare WARP Cloudflare Vpn is a client application for secure connectivity from Cloudflare, Inc. A security vulnerability exists in the Cloudflare WARP Zero Trust platform that stems from insufficient policy validation in the WARP iOS client, which allows an attacker to bypass the Lock Warp...

PT-2022-21776 · Cloudflare · Cloudflare Warp

Name of the Vulnerable Software and Affected Versions: Cloudflare WARP mobile client affected versions not specified Description: The issue allowed a user to delete a VPN profile from the WARP mobile client on the iOS platform, despite the Lock WARP switch feature being enabled on the Zero Trust...

Cloudflare WARP 安全漏洞

Cloudflare WARP Cloudflare Vpn is a client application for secure connectivity from Cloudflare, Inc. A security vulnerability exists in Cloudflare WARP, which can be exploited to bypass the lock WARP switch feature on the WARP iOS mobile client by enabling both the "Disable Cellular Networks" and...

Link Preload XSS

Description Link preloads do not effectively confirm if the requested link is external. Parser differentials can be used to bypass existing external URL check. Root Cause payload.client.ts contains the following code on link prefetch: ts nuxtApp.hooks.hook'link:prefetch', url = if...