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Bug 1535057 (CVE-2017-14804)

Summary:	CVE-2017-14804 obs-build: Exploit extractbuild to write to files in the host system
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	ngompa13
Target Milestone:	---	Keywords:	Reopened, Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-08-26 10:57:10 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:	1535058
Bug Blocks:

Description Andrej Nemec 2018-01-16 15:09:47 UTC

A vulnerability was found in the build script of obs-build. It is possible to exploit the extractbuild script to write to files in the host system, in case of a vm build. This can be used, for instance, to replace a running bs_worker with arbitrary code.

Suse bug report (contains reproducer):

https://bugzilla.novell.com/show_bug.cgi?id=1069904

Comment 1 Andrej Nemec 2018-01-16 15:10:22 UTC

Created obs-build tracking bugs for this issue:

Affects: fedora-all [bug 1535058]

Comment 2 Neal Gompa 2018-08-23 12:28:23 UTC

This had been fixed in https://bodhi.fedoraproject.org/updates/FEDORA-2018-ac8aab1f7a

Comment 3 Neal Gompa 2018-08-23 12:29:39 UTC

Oops, not fixed.

Comment 4 Neal Gompa 2018-08-26 10:57:39 UTC

Fixed in: https://bodhi.fedoraproject.org/updates/FEDORA-2018-fe2cbf0c2b