Bug 1595566 (CVE-2018-12559) - CVE-2018-12559 cantata: Directory traversal due to insufficient mount target check in mounter.cpp
Summary: CVE-2018-12559 cantata: Directory traversal due to insufficient mount target ...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2018-12559
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: 1595571
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-06-27 07:39 UTC by Andrej Nemec
Modified: 2019-09-29 14:42 UTC (History)
2 users (show)

Fixed In Version:
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Last Closed: 2019-06-10 10:30:33 UTC

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Description Andrej Nemec 2018-06-27 07:39:35 UTC 
An issue was discovered in the cantata-mounter D-Bus service in Cantata through 2.3.1. The mount target path check in mounter.cpp `mpOk()` is insufficient. A regular user can consequently mount a CIFS filesystem anywhere (e.g., outside of the /home directory tree) by passing directory traversal sequences such as a home/../usr substring.

References:

http://www.openwall.com/lists/oss-security/2018/06/18/1

Upstream patch:

https://github.com/CDrummond/cantata/commit/afc4f8315d3e96574925fb530a7004cc9e6ce3d3
Comment 1 Andrej Nemec 2018-06-27 07:44:04 UTC 
Created cantata tracking bugs for this issue:

Affects: fedora-all [bug 1595571]
Comment 2 Product Security DevOps Team 2019-06-10 10:30:33 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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