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Gentoo Linux Security Advisory GLSA 201706-29
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https://security.gentoo.org/
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Severity: High
Title: KAuth and KDELibs: Privilege escalation
Date: June 27, 2017
Bugs: #618108
ID: 201706-29
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Synopsis
========
A vulnerability in KAuth and KDELibs allows local users to gain root
privileges.
Background
==========
KAuth provides a convenient, system-integrated way to offload actions
that need to be performed as a privileged user (root, for example) to
small (hopefully secure) helper utilities.
The KDE libraries, basis of KDE and used by many open source projects.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 kde-frameworks/kauth < 5.29.0-r1 >= 5.29.0-r1
2 kde-frameworks/kdelibs < 4.14.32 >= 4.14.32
-------------------------------------------------------------------
2 affected packages
Description
===========
KAuth and KDELibs contains a logic flaw in which the service invoking
D-Bus is not properly checked. This allows spoofing the identity of the
caller and with some carefully crafted calls can lead to gaining root
from an unprivileged account.
Impact
======
A local attacker could spoof the identity of the caller invoking D-Bus,
possibly resulting in gaining privileges.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All KAuth users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=kde-frameworks/kauth-5.29.0-r1"
All KDELibs users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=kde-frameworks/kdelibs-4.14.32"
References
==========
[ 1 ] CVE-2017-8422
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-8422
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201706-29
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
secur...@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.
License
=======
Copyright 2017 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
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