CVE-2023-26438

Summary

CVE-2023-26438 is a vulnerability affecting the Java Development Kit (JDK) that allows external attackers to exploit a time-of-check/time-of-use (TOCTOU) weakness in DNS cache lookups. By timing DNS cache expiry correctly, attackers were able to inject configuration data that bypassed existing network deny-lists. This vulnerability could potentially enable attackers to discover the existence of restricted network infrastructure and service availability. The issue has been addressed by improvements that include deny-lists during both the check of connection data and during usage. No publicly available exploits have been reported as of now.

Prevent cyber attacks with Recorded Future by prioritizing and patching critical vulnerabilities being exploited by threat actors targeting your industry. Book your demo to learn more.