Bug 1645973 (CVE-2018-18398)

Summary:	CVE-2018-18398 Thunar: Out-of-bounds in handling of IBus-Unikey input method for file searches
Product:	[Other] Security Response	Reporter:	Sam Fowler <sfowler>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dhiru, kevin, nonamedotc
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:	2019-06-10 10:41:43 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:	1645974, 1645975
Bug Blocks:

Description Sam Fowler 2018-11-05 05:51:37 UTC

Xfce Thunar 1.6.15, when Xfce 4.12 is used, mishandles the IBus-Unikey input method for file searches within File Manager, leading to an out-of-bounds read and SEGV. This could potentially be exploited by an arbitrary local user who creates files in /tmp before the victim uses this input method. 


Reference:

https://0xd0ff9.wordpress.com/2018/10/18/cve-2018-18398/

Comment 1 Sam Fowler 2018-11-05 05:52:05 UTC

Created Thunar tracking bugs for this issue:

Affects: epel-all [bug 1645975]
Affects: fedora-all [bug 1645974]

Comment 2 Kevin Fenzi 2018-11-05 16:10:02 UTC

FYI, only f27,f28 and epel7 are affected. f29/rawhide are using a newer Thunar/Xfce.

Comment 3 Product Security DevOps Team 2019-06-10 10:41:43 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.