Critical · published October 12, 2020
CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 98.0th percentile for exploit probability.
🚨 A single malicious request can send your SonicOS firewall into a tailspin, causing a Denial of Service and opening the door to potential remote code execution! 🔥 Think of your SonicOS firewall as a bouncer at an exclusive club. If it lets in a poorly forged guest list, chaos ensues, and the party (network) is shut down entirely! This vulnerability can lead to a complete service blackout, where an attacker disrupts your firewall's functionality, leaving your network exposed and vulnerable to additional threats. If they play their cards right, they might even execute arbitrary code remotely— a potential nightmare for any organization!
Think of your SonicOS firewall as a bouncer at an exclusive club. If it lets in a poorly forged guest list, chaos ensues, and the party (network) is shut down entirely! CVE-2020-5135 is a buffer overflow vulnerability in SonicOS that allows remote attackers to exploit the firewall, causing Denial of Service and possibly running malicious code by sending crafted requests.
This vulnerability can lead to a complete service blackout, where an attacker disrupts your firewall's functionality, leaving your network exposed and vulnerable to additional threats. If they play their cards right, they might even execute arbitrary code remotely— a potential nightmare for any organization! Patch affected SonicOS versions immediately to the latest releases: 6.5.4.8, 6.5.1.13, 6.0.5.4, SonicOSv 6.5.4.w, and Gen 7 version 7.0.0.1. Ensure firewalls are configured to reject suspicious requests and conduct regular security audits to detect anomalies. This is fixable! Follow these steps, and you'll have your defenses back in tip-top shape in no time! 🛡️