Bug 1827025 (CVE-2019-7443)

Summary:	CVE-2019-7443 kauth: insecure handling of arguments in helpers
Product:	[Other] Security Response	Reporter:	msiddiqu
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	jgrulich, kde-sig, me, rdieter, than
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kauth 5.55.0	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-04-23 10:31:46 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:	1827026, 1827027
Bug Blocks:

Description msiddiqu 2020-04-23 05:25:14 UTC

KDE KAuth before 5.55 allows the passing of parameters with arbitrary types to helpers running as root over DBus via DBusHelperProxy.cpp. Certain types can cause crashes, and trigger the decoding of arbitrary images with dynamically loaded plugins. In other words, KAuth unintentionally causes this plugin code to run as root, which increases the severity of any possible exploitation of a plugin vulnerability.

Upstream commit:

https://cgit.kde.org/kauth.git/commit/?id=fc70fb0161c1b9144d26389434d34dd135cd3f4a

External References:

https://kde.org/info/security/advisory-20190209-1.txt

References:

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAWLQKTUQJOAPXOFWJQAQCA4LVM2P45F/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PXVUJNXB6QKGPT6YJPJSG3U2BIR5XK5Y/

Comment 1 msiddiqu 2020-04-23 05:25:40 UTC

Created kf5-kauth tracking bugs for this issue:

Affects: epel-all [bug 1827027]
Affects: fedora-all [bug 1827026]

Comment 2 Product Security DevOps Team 2020-04-23 10:31:46 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.