Bug 1263126 (CVE-2015-6927) - CVE-2015-6927 vzctl: gaining control over simfs containers
Summary: CVE-2015-6927 vzctl: gaining control over simfs containers
Alias: CVE-2015-6927
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1263127
TreeView+ depends on / blocked
Reported: 2015-09-15 07:46 UTC by Martin Prpič
Modified: 2019-09-29 13:36 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2019-06-08 02:43:34 UTC

Attachments (Terms of Use)

Description Martin Prpič 2015-09-15 07:46:05 UTC
Debian fixed the following issue in vzctl:

It was discovered that vzctl, a set of control tools for the OpenVZ server virtualisation solution, determined the storage layout of containers based on the presense of an XML file inside the container. An attacker with local root privileges in a simfs-based container could gain control over ploop-based containers. Further information on the prerequites of such an attack can be found at:


Debian advisory:


Comment 1 Martin Prpič 2015-09-15 07:46:28 UTC
Created vzctl tracking bugs for this issue:

Affects: fedora-all [bug 1263127]

Comment 2 Salvatore Bonaccorso 2015-09-15 19:00:44 UTC
FYI, a CVE was requested directly to MITRE CVE assignment team for this. It was assigned CVE-2015-6927.


Comment 3 Product Security DevOps Team 2019-06-08 02:43:34 UTC
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.

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