Bug 1704770 (CVE-2019-11502)

Summary:	CVE-2019-11502 snapd: incorrect setting of ownership leads to access private /tmp directory
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	go-sig, me, ngompa13
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	snapd 2.38	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-27 03:28:17 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:

Description Dhananjay Arunesh 2019-04-30 13:15:39 UTC

snap-confine in snapd before 2.38 incorrectly set the ownership of a snap application to the uid and gid of the first calling user. Consequently, that user had unintended access to a private /tmp directory. 

Reference:
https://www.openwall.com/lists/oss-security/2019/04/18/4

Upstream commit:
https://github.com/snapcore/snapd/commit/bdbfeebef03245176ae0dc323392bb0522a339b1