Bug 1487252 (CVE-2017-1000199) - CVE-2017-1000199 tcmu-runner: qcow handler opens up an information leak via the CheckConfig D-Bus method
Summary: CVE-2017-1000199 tcmu-runner: qcow handler opens up an information leak via t...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2017-1000199
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1487255 1494511 1494514
Blocks: 1487254
TreeView+ depends on / blocked
 
Reported: 2017-08-31 13:47 UTC by Andrej Nemec
Modified: 2021-10-21 11:56 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A file information leak flaw was found in implementation of the CheckConfig method in handler_qcow.so of the tcmu-runner daemon. A local, non-root user with access to the D-Bus system bus could use this flaw to leak arbitrary file names which might not be retrievable by non-root user.
Clone Of:
Environment:
Last Closed: 2021-10-21 11:56:11 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2017:3277 0 normal SHIPPED_LIVE Moderate: tcmu-runner security update 2017-11-29 08:32:51 UTC

Description Andrej Nemec 2017-08-31 13:47:58 UTC 
A local non-root user with access to the D-Bus system bus can call the
CheckConfig method implemented in the tcmu-runner daemon via
handler_qcow.so and exploit an information leak by passing in arbitrary
filenames to check.

This allows a local user to check for the existence of root owned files,
which might enable more serious security issues in combination with
other security flaws in a system.

Upstream patch:

https://github.com/open-iscsi/tcmu-runner/commit/8cf8208775022301adaa59c240bb7f93742d1329

References:

http://seclists.org/oss-sec/2017/q3/207
Comment 1 Andrej Nemec 2017-08-31 13:50:07 UTC 
Created tcmu-runner tracking bugs for this issue:

Affects: fedora-all [bug 1487255]
Comment 4 errata-xmlrpc 2017-11-29 03:33:48 UTC 
This issue has been addressed in the following products:

  Red Hat Gluster Storage 3.3 for RHEL 7

Via RHSA-2017:3277 https://access.redhat.com/errata/RHSA-2017:3277
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