Threat Encyclopedia

Apple.WebKit.JavaScriptCore.CodeBlock.Use.After.Free

description-logoDescription

This indicates an attack attempt to exploit a Use After Free vulnerability in WebKit, a component of Apple Safari.
The vulnerability is due to an error when the vulnerable software handles a maliciously crafted web page. An attacker can exploit this by tricking an unsuspecting user into visiting a malicious webpage and execute arbitrary code within the context of the application.

affected-products-logoAffected Products

WebKit in Apple iOS before 12.2
WebKit in macOS before 10.14.4

Impact

System Compromise: Remote attackers can gain control of vulnerable systems.

recomended-action-logoRecommended Actions

Apply the most recent upgrade or patch from the vendor.
https://support.apple.com/HT209599
https://support.apple.com/HT209600

CVE References

CVE-2019-8558