Bug 1595570 (CVE-2018-12562)

Summary:	CVE-2018-12562 cantata: Insufficient input validation in the 'mount.cifs.wrapper' script
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	i, rdieter
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2019-06-10 10:30:38 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1595571
Bug Blocks:

Description Andrej Nemec 2018-06-27 07:42:55 UTC

An issue was discovered in the cantata-mounter D-Bus service in Cantata through 2.3.1. The wrapper script 'mount.cifs.wrapper' uses the shell to forward the arguments to the actual mount.cifs binary. The shell evaluates wildcards (such as in an injected string:/home/../tmp/* string).

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 07:44:11 UTC

Created cantata tracking bugs for this issue:

Affects: fedora-all [bug 1595571]

Comment 2 Product Security DevOps Team 2019-06-10 10:30:38 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.