Bug 1487251 (CVE-2017-1000200) - CVE-2017-1000200 tcmu-runner: UnregisterHandler D-Bus method in tcmu-runner daemon for internal handler causes DoS
Summary: CVE-2017-1000200 tcmu-runner: UnregisterHandler D-Bus method in tcmu-runner d...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2017-1000200
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
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 13:45 UTC by Andrej Nemec
Modified: 2021-10-21 11:56 UTC (History)
3 users (show)

Fixed In Version:
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Doc Text:
A NULL pointer dereference flaw was found in the UnregisterHandler method implemented in the tcmu-runner daemon. A local, non-root user with access to the D-Bus system bus could call the UnregisterHandler method with the name of a handler loaded internally in tcmu-runner via dlopen() to trigger DoS.
Clone Of:
Environment:
Last Closed: 2021-10-21 11:56:07 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 13:45:34 UTC 
A local non-root user with access to the D-Bus system bus can call the
UnregisterHandler method implemented in the tcmu-runner daemon with the
name of a handler loaded internally in tcmu-runner via dlopen() and
cause a NULL pointer dereference resulting in DoS.

Upstream patch:

https://github.com/open-iscsi/tcmu-runner/commit/bb80e9c7a798f035768260ebdadffb6eb0786178

References:

http://seclists.org/oss-sec/2017/q3/207
Comment 1 Andrej Nemec 2017-08-31 13:50:00 UTC 
Created tcmu-runner tracking bugs for this issue:

Affects: fedora-all [bug 1487255]
Comment 4 errata-xmlrpc 2017-11-29 03:33:41 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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