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Gentoo: GLSA-201706-29 High: KAuth and KDELibs Privilege Escalation

gentoo
Calendar Grey June 27, 2017
Scroller Gentoo Esm H88
KAuth and KDELibs vulnerability in Arch Linux permits privilege escalation; system update advised to mitigate risks.
A vulnerability in KAuth and KDELibs allows local users to gain root privileges.

Summary

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.

Topics%20covered

Topics Covered

security advisory high severity gentoo privilege escalation kauth

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
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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.

Severity: High
Title: KAuth and KDELibs: Privilege escalation
Date: June 27, 2017
Bugs: #618108
ID: 201706-29

Topics%20covered

Topics Covered

security advisory high severity gentoo privilege escalation kauth

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.

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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

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.