Imperva observed almost 1.3M exploit attempts per hour within the first 10 days of the exploit becoming public. The following graph shows the volume of exploit attempts against sites onboarded to Imperva Cloud WAF since the disclosure of the vulnerability. The following graphs illustrate how the attacks have developed. Imperva has blocked over 102M attack attempts since the disclosure on December 9. Imperva response to Log4shellĪlthough Imperva’s generic security rules provided protection against exploitation attempts, a few hours after the proof of concept (PoC) was published on December 9, Imperva security analysts deployed a dedicated mitigation and issued a manual mitigation guide for Imperva Web Application Firewall (WAF) customers. The data presented throughout this blog post is sourced from analyzing Imperva’s global network traffic and publicly-available external sources, including social media. In this blog, we will demonstrate some of the interesting attack patterns, payloads, bypass techniques, and data points we have observed during our analysis of the recent Log4j related vulnerabilities. There is a wealth of resources readily available online that explain what each Log4j vulnerability is and how the exploits work. In the days following, the team at Imperva also responded to the additional Log4j-related vulnerabilities disclosed following the initial zero day publication, to ensure the best possible protection for our customers. Imperva has observed over 102M exploitation attempts across thousands of sites protected by Imperva Cloud Web Application Firewall (WAF). Private final Logger logger = Logger.getLogger(this.The Log4Shell zero day vulnerability is truly one of the most significant security threats of the past decade and its effects will be felt far into 2022 and beyond. Throw new IllegalStateException("Cannot run destroy method") Public void divide(int number1, int number2) days", days)) Private final Logger logger = Logger.getLogger(this.getClass())
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