Bug 1255782 (CVE-2015-5228)

Summary:	CVE-2015-5228 criu: arbitrary file creation and chown
Product:	[Other] Security Response	Reporter:	Florian Weimer <fweimer>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	areber, carnil, security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-21 00:47:30 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:	1255787, 1256747
Bug Blocks:	1254572, 1255785

Description Florian Weimer 2015-08-21 14:31:55 UTC

It was discovered that local users could use the criu daemon to create
arbitrary files and take ownership of existing files, due to the
creation of log and dump files in a user-supplied directory path.
This allows unprivileged local users to gain root privileges.

Acknowledgements:

This issue was discovered by Florian Weimer of Red Hat Product Security.

Comment 4 Florian Weimer 2015-08-25 11:40:45 UTC

Created criu tracking bugs for this issue:

Affects: fedora-all [bug 1256747]

Comment 5 Florian Weimer 2015-08-25 11:59:53 UTC

Upstream discussion:

  http://lists.openvz.org/pipermail/criu/2015-August/021847.html