Bug 1635452 (CVE-2018-12387)

Summary:	CVE-2018-12387 Mozilla: stack out-of-bounds read in Array.prototype.push
Product:	[Other] Security Response	Reporter:	Doran Moppert <dmoppert>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	urgent	Docs Contact:
Priority:	urgent
Version:	unspecified	CC:	cschalle, gecko-bugs-nobody, jhorak, security-response-team, stransky, yozone
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-11-13 05:19:01 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1635173, 1635174, 1635175
Bug Blocks:	1635177

Description Doran Moppert 2018-10-02 23:19:29 UTC

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 23:19:35 UTC

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 08:26:48 UTC

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 19:54:47 UTC

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