Overview Recently, NSFOCUS CERT found that Google officially fixed a heap buffer overflow vulnerability (CVE-2023-4863). Due to a flaw in the WebP module, an attacker triggered the vulnerability by inducing users to visit a malicious website, which ultimately led to arbitrary code execution on the target system. At present, it...
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Turmoil in Libya: Major Industries Hit by Massive DDoS Attacks
I. Background In August, NSFOCUS Global Threat Hunting System spotted an abnormal trend of DDoS attacks against Libya. NSFOCUS Security Labs sorted out the traffic changes of DDoS attacks in August and found that this attack may be related to the turmoil in Libya in August by comparing it with...
Insights from Attack and Defense Drills: Strategies and Resilience
Recently, NSFOCUS SOC team summarized the findings from attack and defense drills in the first half of 2023. In these smokeless battles, the attackers advanced with aggressive strategies, while the defenders relied on comprehensive defense systems, taking measures from protecting, monitoring to tracing, and resisting every attempt to breach their...
Introduction to NSFOCUS WAF Apply Rule Database
In the versions before 6.0.7.3.61634, after users upgrade the NSFOCUS WAF Rule Database, they have to add the new rules one by one to the website’s policy based on the rule name or the rule number manually to apply the new policies. To improve user experience, the NSFOCUS WAF version...
Multiple Security Vulnerability Notifications on Apple Products
Overview Recently, NSFOCUS CERT has detected that Apple has officially repaired two 0day vulnerabilities in multiple Apple products. At present, it has detected that there are uses in wild. Affected users should take protective measures as soon as possible. The details of the vulnerability are as follows: Apple ImageIO Remote...
Multiple security vulnerability notifications on Google Chrome
Overview Recently, NSFOCUS CERT has monitored that Google Chrome has officially released security announcements and fixed several security vulnerabilities. The key vulnerabilities are as follows: Google Chrome Cross Border Read Vulnerability (CVE-2023-4761): Due to an out of bounds memory read vulnerability in Google Chrome FebCM, attackers who can disrupt the...
