Bug 1255782 (CVE-2015-5228)

Summary: CVE-2015-5228 criu: arbitrary file creation and chown
Product: [Other] Security Response Reporter: Florian Weimer <fweimer>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: areber, carnil, security-response-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=moderate,public=20150825,reported=20150821,source=redhat,cvss2=6.6/AV:L/AC:L/Au:N/C:C/I:C/A:N,rhel-7.2/criu=affected,fedora-all/criu=affected
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
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