Bug 1490872 – CVE-2017-14604 nautilus: Insufficient validation of trust of .desktop files with execute permission

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Bug 1490872 - (CVE-2017-14604) CVE-2017-14604 nautilus: Insufficient validation of trust of .desktop files with execute permission

Summary:	CVE-2017-14604 nautilus: Insufficient validation of trust of .desktop files w...

Status:	CLOSED ERRATA

Aliases:	CVE-2017-14604

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20170131,repor...
Keywords:	Security

Depends On:	1490873 1490948 1490949
Blocks:	1490875
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Reported:	2017-09-12 08:08 EDT by Andrej Nemec
Modified:	2018-02-12 06:27 EST (History)
CC List:	9 users (show)

See Also:
Fixed In Version:	nautilus 3.24
Doc Type:	If docs needed, set a value
Doc Text:	An untrusted .desktop file with executable permission set could choose its displayed name and icon, and execute commands without warning when opened by the user. An attacker could use this flaw to trick a user into opening a .desktop file disguised as a document, such as a PDF, and execute arbitrary commands.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2018-01-25 09:51:54 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2018:0223	normal	SHIPPED_LIVE	Moderate: nautilus security update	2018-01-25 14:43:34 EST

Groups: None (edit)

Description Andrej Nemec 2017-09-12 08:08:14 EDT

Nautilus trusts desktop files that have the executable bit set, and doesn't replace the displayed icon or the displayed name until it's trusted, which prevents from running random programs by a malicious desktop file.

However, the executable permission is preserved if the desktop file comes from a compressed file. A maliciously crafted file opened by the user could result in code execution. 

Upstream issue:

https://bugzilla.gnome.org/show_bug.cgi?id=777991

Upstream patch:

https://bugzilla.gnome.org/attachment.cgi?id=345047&action=diff

Comment 1 Andrej Nemec 2017-09-12 08:08:40 EDT

Created nautilus tracking bugs for this issue:

Affects: fedora-25 [bug 1490873]

Comment 3 errata-xmlrpc 2018-01-25 09:44:55 EST

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:0223 https://access.redhat.com/errata/RHSA-2018:0223

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