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Category:   Application (Web Browser)  >   Mozilla Firefox Vendors:   Mozilla.org
(Ubuntu Issues Fix) Mozilla Firefox File Processing Flaws Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1041777
SecurityTracker URL:  http://securitytracker.com/id/1041777
CVE Reference:   CVE-2018-12386, CVE-2018-12387   (Links to External Site)
Date:  Oct 3 2018
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   Two vulnerabilities were reported in Mozilla Firefox. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create a specially crafted file that, when loaded by the target user, will trigger a register allocation and type confusion error and execute arbitrary code on the target system [CVE-2018-12386].

A remote user can trigger a bailout error in the JavaScript JIT compiler when inlining 'Array.prototype.push' to potentially execute arbitrary code within the sandboxed content process [CVE-2018-12387].

Samuel Gross, Bruno Keith (via Beyond Security's SecuriTeam Secure Disclosure program), and Niklas Baumstark (via Beyond Security's SecuriTeam Secure Disclosure program) reported these vulnerabilities.

Impact:   A remote user can create content that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   Ubuntu has issued a fix.

The Ubuntu advisory is available at:

https://usn.ubuntu.com/usn/usn-3778-1

Vendor URL:  usn.ubuntu.com/usn/usn-3778-1 (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Ubuntu)
Underlying OS Comments:  14.04 LTS, 16.04 LTS, 18.04 LTS

Message History:   This archive entry is a follow-up to the message listed below.
Oct 2 2018 Mozilla Firefox File Processing Flaws Let Remote Users Execute Arbitrary Code



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