GLSA 201706-29: KAuth and KDELibs: Privilege escalation

http://security.gentoo.org/

Severity:	high
Title:	KAuth and KDELibs: Privilege escalation
Date:	06/27/2017
Bugs:	#618108
ID:	201706-29

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	Architecture(s)
kde-frameworks/kauth	< 5.29.0-r1	>= 5.29.0-r1	All supported architectures
kde-frameworks/kdelibs	< 4.14.32	>= 4.14.32	All supported architectures

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

CVE-2017-8422

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201706-29.xml

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 security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.