June 03, 2022 5:30 AM
On June 02, 2022 Atlassian released a security advisory for their Confluence Server and Data Center applications, highlighting a critical severity unauthenticated remote code execution vulnerability....
May 26, 2022 1:17 PM
Cloudflare’s approach to handling firmware vulnerabilities and how we keep our internal data protected...
May 06, 2022 1:00 PM
The Cloudflare Bug Bounty has resulted in numerous security improvements to Cloudflare Pages...
March 31, 2022 3:13 PM
Cloudflare Managed Ruleset updates for the recent vulnerabilities affecting the Java Spring framework and related software components...
March 29, 2022 3:51 PM
CVE-2022-1096 is yet another zero day vulnerability affecting web browsers. Cloudflare zero trust mitigates the risk of zero day attacks in the browser and has been patched...
March 08, 2022 2:59 PM
A new reflection/amplification distributed denial-of-service (DDoS) vector with a record-breaking potential amplification ratio of 4,294,967,296:1 has been abused by attackers in the wild to launch multiple high-impact DDoS attacks...
February 01, 2022 5:28 PM
Today we are launching Cloudflare’s paid public bug bounty program. We believe bug bounties are a vital part of every security team’s toolbox....
December 15, 2021 1:56 PM
This vulnerability is actively being exploited and anyone using Log4J should update to version 2.16.0 as soon as possible. Latest version is available on the Log4J download page....
December 14, 2021 5:48 PM
This article covers WAF evasion patterns and exfiltration attempts, trend data on attempted exploitation, and information on exploitation that we saw prior to the public disclosure of CVE-2021-44228....
December 14, 2021 10:23 AM
Many Cloudflare customers consume their logs using software that uses Log4j, so we are mitigating any exploit attempts via Cloudflare Logs....
December 10, 2021 11:39 PM
Yesterday, December 9, 2021, when a serious vulnerability in the popular Java-based logging package log4j was publicly disclosed, our security teams jumped into action to help respond to the first question and answer the second question. This post explores the second....
December 10, 2021 9:06 PM
I wrote earlier about how to mitigate CVE-2021-44228 in Log4j, how the vulnerability came about and Cloudflare’s mitigations for our customers. As I write we are rolling out protection for our FREE customers as well because of the vulnerability’s severity....
December 10, 2021 6:36 PM
In this post we explain the history of this vulnerability, how it was introduced, how Cloudflare is protecting our clients. We will update later with actual attempted exploitation we are seeing blocked by our firewall service....
December 10, 2021 11:39 AM
A zero-day exploit affecting the popular Apache Log4j utility (CVE-2021-44228) was made public on December 9, 2021, that results in remote code execution (RCE)....
November 12, 2021 8:59 PM
A number of vulnerabilities in Resource Public Key Infrastructure (RPKI) validation software were disclosed in a recent NCSC advisory, discovered by researchers from the University of Twente....
October 08, 2021 10:29 AM
On September 29th 2021, the Apache Security team was alerted of a path traversal vulnerability being actively exploited (zero-day) against Apache HTTP Server version 2.4.49. Customers running the affected Apache version, should update to 2.5.51 as soon as possible....
September 08, 2021 9:18 AM
On August 25, 2021, Atlassian released a security advisory affecting their Confluence application. The Cloudflare WAF soon after started mitigating an increase in malicious traffic to vulnerable endpoints ensuring customers remained protected....
March 07, 2021 12:47 AM
Cloudflare has deployed managed rules protecting customers against a series of remotely exploitable vulnerabilities that were recently found in Microsoft Exchange Server. ...
November 13, 2020 7:06 PM
Researchers from UC Riverside and Tsinghua University found a new way to revive a decade-old DNS cache poisoning attack. Read our deep dive into how the SAD DNS attack on DNS resolvers works, how we protect against this attack in 1.1.1.1, and what the future holds for DNS cache p...
