Bug 1219058 (CVE-2015-3629)

Summary: CVE-2015-3629 docker: symlink traversal on container respawn allows local privilege escalation
Product: [Other] Security Response Reporter: Martin Prpič <mprpic>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: adimania, admiller, dwalsh, golang-updates, hushan.jia, ichavero, jchaloup, jperrin, lsm5, mattdm, miminar, security-response-team, s, thrcka
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: docker 1.6.1 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-10-21 00:44:37 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: 1219701, 1219702, 1219703, 1219704    
Bug Blocks: 1219067    

Description Martin Prpič 2015-05-06 13:58:55 UTC 
The following flaw was reported in Docker:

Libcontainer version 1.6.0 introduced changes which facilitated a mount namespace breakout upon respawn of a container. This allowed malicious images to write files to the host system and escape containerization.

Libcontainer and Docker Engine 1.6.1 address this vulnerability.

Acknowledgements:

Red Hat would like to thank Eric Windisch of the Docker project for reporting this issue.
Comment 1 Trevor Jay 2015-05-08 01:33:37 UTC 
This issue is exploitable by malicious Docker images. Red Hat supports images from it's own registry, ISV images certified by the Red Hat certification program, and images using qualified customer content.
Comment 3 Trevor Jay 2015-05-08 01:45:21 UTC 
Created docker-io tracking bugs for this issue:

Affects: fedora-all [bug 1219703]
Affects: epel-6 [bug 1219704]