Bug 1099265 (CVE-2018-12559)

Summary:	VUL-0: CVE-2018-12559: cantata: Directory traversal due to insufficient mount target check in mounter.cpp
Product:	[openSUSE] openSUSE Distribution	Reporter:	Alexander Bergmann <abergmann>
Component:	Security	Assignee:	Cor Blom <cornelis>
Status:	RESOLVED DUPLICATE	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P5 - None
Version:	Leap 15.0
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/208462/
Whiteboard:
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description Alexander Bergmann 2018-06-27 09:03:51 UTC

rh#1595566

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:
https://bugzilla.redhat.com/show_bug.cgi?id=1595566
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-12559
http://www.openwall.com/lists/oss-security/2018/06/18/1
http://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-12559.html
https://github.com/CDrummond/cantata/commit/afc4f8315d3e96574925fb530a7004cc9e6ce3d3

Comment 1 Cor Blom 2018-06-27 11:11:44 UTC

We don't build with this option.

*** This bug has been marked as a duplicate of bug 1091824 ***