CVE-2019-8375 : What You Need to Know
Learn about CVE-2019-8375, a vulnerability in WebKit's UIProcess subsystem affecting WebKitGTK and WebKitGTK+ versions, potentially leading to denial of service. Find mitigation steps and affected systems here.
This CVE-2019-8375 article provides insights into a vulnerability in the WebKit application's UIProcess subsystem, affecting WebKitGTK and WebKitGTK+ versions, potentially leading to a denial of service or other consequences.
Understanding CVE-2019-8375
What is CVE-2019-8375?
The WebKit application's UIProcess subsystem in WebKitGTK versions up to 2.23.90 and WebKitGTK+ versions up to 2.22.6 lacks the capability to restrict the size of script dialogues to the dimensions of the web view. This vulnerability can be exploited by malicious actors to perform a Buffer Overflow attack.
The Impact of CVE-2019-8375
This vulnerability could result in a denial of service or potentially lead to other unspecified consequences. The affected files include UIProcess/API/gtk/WebKitScriptDialogGtk.cpp, UIProcess/API/gtk/WebKitScriptDialogImpl.cpp, and UIProcess/API/gtk/WebKitWebViewGtk.cpp. GNOME Web (Epiphany) is a verified platform for demonstrating this vulnerability.
Technical Details of CVE-2019-8375
Vulnerability Description
The UIProcess subsystem in WebKit does not prevent script dialog size from exceeding the web view size, allowing remote attackers to cause a denial of service (Buffer Overflow) or other impacts.
Affected Systems and Versions
- WebKitGTK versions up to 2.23.90
- WebKitGTK+ versions up to 2.22.6
Exploitation Mechanism
The vulnerability can be exploited by malicious actors to perform a Buffer Overflow attack.
Mitigation and Prevention
Immediate Steps to Take
- Apply the necessary security patches provided by the vendor promptly.
- Consider implementing network security measures to detect and block malicious activities.
Long-Term Security Practices
- Regularly update and patch software to mitigate known vulnerabilities.
- Conduct security assessments and penetration testing to identify and address potential weaknesses.
Patching and Updates
Ensure that all systems running WebKitGTK and WebKitGTK+ are updated with the latest security patches to address this vulnerability.