Bug 1555131 (CVE-2018-5131)

Summary:	CVE-2018-5131 Mozilla: Fetch API improperly returns cached copies of no-store/no-cache resources (MFSA 2018-07)
Product:	[Other] Security Response	Reporter:	Doran Moppert <dmoppert>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	cschalle, gecko-bugs-nobody, jhorak, security-response-team, stransky
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:	2018-06-20 00:53:42 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:	1551856, 1551857, 1551858, 1551859
Bug Blocks:	1551854

Description Doran Moppert 2018-03-14 02:04:17 UTC

Under certain circumstances the `fetch()` API can return transient local copies of resources that were sent with a `no-store` or `no-cache` cache header instead of downloading a copy from the network as it should. This can result in previously stored, locally cached data of a website being accessible to users if they share a common profile while browsing.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2018-07/#CVE-2018-5131

Comment 1 Doran Moppert 2018-03-14 02:04:23 UTC

Acknowledgments:

Name: the Mozilla project
Upstream: Ben Kelly

Comment 2 errata-xmlrpc 2018-03-15 10:31:59 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2018:0526 https://access.redhat.com/errata/RHSA-2018:0526

Comment 3 errata-xmlrpc 2018-03-15 11:20:54 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:0527 https://access.redhat.com/errata/RHSA-2018:0527