Bug 667612 – <www-client/firefox{,-bin}-{60.2.2,62.0.3}: multiple vulnerabilities (MFSA-2018-24)

• Status: RESOLVED FIXED
• Product: Gentoo Security

[Description GLSAMaker/CVETool Bot 2018-10-02 21:17:18 UTC]

Incoming details.

[Comment 1 Thomas Deutschmann (RETIRED) 2018-10-02 21:19:38 UTC]

CVE-2018-12386: Type confusion in JavaScript

Impact
    critical

Description

A vulnerability in register allocation in JavaScript can lead to type confusion, allowing for an arbitrary read and write. This leads to remote code execution inside the sandboxed content process when triggered.
References


CVE-2018-12387:

Impact
    critical

Description

A vulnerability where the JavaScript JIT compiler inlines Array.prototype.push with multiple arguments that results in the stack pointer being off by 8 bytes after a bailout. This leaks a memory address to the calling function which can be used as part of an exploit inside the sandboxed content process.

[Comment 2 Thomas Deutschmann (RETIRED) 2018-10-02 21:21:14 UTC]

Fast stabilization started.

[Comment 3 Thomas Deutschmann (RETIRED) 2018-10-02 21:40:12 UTC]

Added to an existing GLSA request.

[Comment 4 GLSAMaker/CVETool Bot 2018-10-02 22:25:53 UTC]

This issue was resolved and addressed in
 GLSA 201810-01 at https://security.gentoo.org/glsa/201810-01
by GLSA coordinator Thomas Deutschmann (whissi).