Bug 1589839 (CVE-2014-5220)

Summary:	CVE-2014-5220 mdadm: Improper sanitization of device names allows arbitrary command execution
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	agk, dledford, dmilburn, hwkernel-mgr, jes.sorensen, ncroxon, xni
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	mdadm 3.3.3	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-06-11 13:46:10 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1590393

Description Adam Mariš 2018-06-11 13:43:05 UTC

The mdcheck script of the mdadm package for openSUSE 13.2 prior to version 3.3.1-5.14.1 does not properly sanitize device names, which allows local attackers to execute arbitrary commands as root.

Bug report:

https://bugzilla.suse.com/show_bug.cgi?id=910500

Comment 1 Adam Mariš 2018-06-11 15:55:12 UTC

Upstream patch:

https://github.com/mapcollab/mdadm/commit/979b1feb093b1c2e0f8b58716329f2da092741d4

Comment 2 Tomas Hoger 2018-06-12 21:06:20 UTC

The mdcheck script was added to mdadm in the upstream version 3.3.1, and it was fixed via the the commit linked above in upstream version 3.3.3.

Comment 3 Tomas Hoger 2018-06-15 21:36:33 UTC

Affected upstream versions of mdadm were included in Red Hat Enterprise Linux 6.7, 7.1, and 7.2.

However, in the Red Hat Enterprise Linux mdadm packages, the mdcheck script is only included in the /usr/share/doc/mdadm* directory and is not installed executable.  Therefore, it is not used by default, and is not expected to be commonly used.