Bug 1601019 (CVE-2018-14036)

Summary:	CVE-2018-14036 accountsservice: insufficient path check in user_change_icon_file_authorized_cb() in user.c
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	mclasen, rstrode, sfowler, stefw
Target Milestone:	---	Keywords:	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:	2021-10-25 09:46:41 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:	1597499, 1601020, 1601021, 1602918
Bug Blocks:	1601022

Description Pedro Sampaio 2018-07-13 15:19:48 UTC

Directory Traversal with ../ sequences occurs in AccountsService before 0.6.50 because of an insufficient path check in user_change_icon_file_authorized_cb() in user.c.

Upstream bug:

https://bugs.freedesktop.org/show_bug.cgi?id=107085

Upstream patch:

https://cgit.freedesktop.org/accountsservice/commit/?id=f9abd359f71a5bce421b9ae23432f539a067847a

References:

http://www.openwall.com/lists/oss-security/2018/07/02/2

Comment 1 Pedro Sampaio 2018-07-13 15:20:14 UTC

Created accountsservice tracking bugs for this issue:

Affects: fedora-all [bug 1601020]

Comment 3 Tomas Hoger 2018-07-13 19:17:39 UTC

*** Bug 1597495 has been marked as a duplicate of this bug. ***

Comment 6 Pedro Yóssis Silva Barbosa 2018-07-18 20:07:56 UTC

The vulnerability would trigger an information disclosure (e.g., file read) concern. No vulnerable third party applications were found so far.