Bug 1635452 – CVE-2018-12387 Mozilla: stack out-of-bounds read in Array.prototype.push

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Bug 1635452 - (CVE-2018-12387) CVE-2018-12387 Mozilla: stack out-of-bounds read in Array.prototype.push

Summary:	CVE-2018-12387 Mozilla: stack out-of-bounds read in Array.prototype.push

Status:	NEW

Aliases:	CVE-2018-12387

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	urgent Severity urgent
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Assigned To:	Red Hat Product Security
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Whiteboard:	impact=critical,public=20181002,repor...
Keywords:	Security

Depends On:	1635175 1635173 1635174
Blocks:	1635177
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Reported:	2018-10-02 19:19 EDT by Doran Moppert
Modified:	2018-10-28 18:24 EDT (History)
CC List:	6 users (show)

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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2018:2881	None	None	None	2018-10-08 04:26 EDT
Red Hat Product Errata	RHSA-2018:2884	None	None	None	2018-10-08 15:54 EDT

Groups: None (edit)

Description Doran Moppert 2018-10-02 19:19:29 EDT

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.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2018-24/#CVE-2018-12387

Comment 1 Doran Moppert 2018-10-02 19:19:35 EDT

Acknowledgments:

Name: the Mozilla project
Upstream: Niklas Baumstark, Bruno Keith via Beyond Security's SecuriTeam Secure Disclosure program

Comment 3 errata-xmlrpc 2018-10-08 04:26:48 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2018:2881 https://access.redhat.com/errata/RHSA-2018:2881

Comment 4 errata-xmlrpc 2018-10-08 15:54:47 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:2884 https://access.redhat.com/errata/RHSA-2018:2884

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