The POODLE SSL vulnerability Updated on August 16, 2021 by Jeff Matson 1 Minutes, 33 Seconds to Read Today, a new vulnerability named POODLE (Padding Oracle On Downgraded Legacy Encryption) was discovered by Google security researchers Bodo Möller, Thai Duong, and Krzysztof Kotowicz. Instead of targeting the server directly as Heartbleed or ShellShock did, this exploit directly targets the clients that are visiting the sites. How is the attack executed? Individual clients are affected due to backwards compatibility built into most software. By default, browser such as Firefox, Chrome, and Internet Explorer will attempt to connect to the server using the highest TLS protocol version available, but if interrupted, will try a lower version which can include SSL 3.0. When this is done, an attacker can potentially compromise the traffic and gain information that would otherwise be encrypted. Table of Contents What changes do I need to make? Shared and Reseller hosting VPS and Dedicated hosting How can I protect myself from vulnerable servers? Vulnerable software and workarounds Web browsers What changes do I need to make? Shared and Reseller hosting We have disabled SSL 3.0 within all shared hosting environments to resolve the issue. VPS and Dedicated hosting If you are on a VPS or dedicated server, your server is not automatically patched. If you have root access, you may perform the steps outlined in our article on disabling SSL 3.0. If you do not have root access, or are not comfortable performing these steps, you may submit a verified ticket to technical support and they will be happy to make those changes for you. How can I protect myself from vulnerable servers? Eventually, all software will be updated to remove the backward compatibility issue, but until that is done, you will need to apply workarounds to vulnerable software. While this exploit primarily applies to individuals passing information over a public network, it is always a good idea to safegard yourself at all times. Vulnerable software and workarounds Web browsers Software Vulnerable Workaround Firefox Yes Set Firefox minimum TLS version Chrome Yes Set Chrome minimum TLS version Safari Yes Workaround unavailable at this time Internet Explorer Yes Set Internet Explorer minimum TLS version Share this Article Related Articles Migrate and Transfer SSLs Troubleshooting SSL Connection Errors: How to Fix HTTPS Issues What Is SSL and Why Does It Matter for Your Website? How to Tell If a Website Is Secure: 2026 Browser Guide How to Enable cPanel AutoSSL via Account Management Panel (AMP) and WHM How to Manage AutoSSL Certificates in cPanel Install Let’s Encrypt Free SSL Certificate on Ubuntu with Certbot Force HTTPS with the .htaccess File How to Fix the Insecure SSL Error due to SHA-1 Deprecation Installing SSLs and Generating CSRs in cPanel