Bug 1380386 (CVE-2016-7787)

Summary:	CVE-2016-7787 kde-cli-tools: Improper handling of unicode string terminator in kdesu invocation
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	jgrulich, kde-sig, me, rdieter, than
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kf5-kdesu 5.7.95, kf5-kdesu 5.7.5	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 02:59:14 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:	1380387, 1380388
Bug Blocks:

Description Adam Mariš 2016-09-29 12:45:13 UTC

Improper handling of unicode string terminator in kdesu invocation could lead to unintended code execution.

PoC:

echo Hi@; whoami > /tmp/filebyroot

If @ is the unicode string terminator, it would only tell the user that kdesu executed "echo Hi" but it also creates the /tmp/filebyroot file as root

Upstream patch:

https://github.com/KDE/kde-cli-tools/commit/5eda179a099ba68a20dc21dc0da63e85a565a171

CVE assignment:

http://seclists.org/oss-sec/2016/q3/653

Comment 1 Adam Mariš 2016-09-29 12:45:44 UTC

Created kf5-kdesu tracking bugs for this issue:

Affects: fedora-all [bug 1380387]
Affects: epel-7 [bug 1380388]

Comment 2 Product Security DevOps Team 2019-06-08 02:59:14 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.