CVE-2017-8422 Auth bypass in n/a

High 7.8 Published Updated

Local attackers can gain root privileges by spoofing callerID in KDE kdelibs and KAuth privileged helper applications.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
Available

What is CVE-2017-8422?

CVE-2017-8422 is a high-severity authentication bypass vulnerability in n/a, published on 17 May 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

KDE kdelibs before 4.14.32 and KAuth before 5.34 allow local users to gain root privileges by spoofing a callerID and leveraging a privileged helper app.

Weakness: CWE-290

Which versions are affected by CVE-2017-8422?

It affects 2 products.

Linux distribution packages (40)
kdelibs Red Hat:enterprise_linux:7::clientAll versions6:4.14.8-6.el7_3
kdelibs-apidocs Red Hat:enterprise_linux:7::clientAll versions6:4.14.8-6.el7_3
kdelibs-common Red Hat:enterprise_linux:7::clientAll versions6:4.14.8-6.el7_3
kdelibs-debuginfo Red Hat:enterprise_linux:7::clientAll versions6:4.14.8-6.el7_3
kdelibs-devel Red Hat:enterprise_linux:7::clientAll versions6:4.14.8-6.el7_3
kdelibs-ktexteditor Red Hat:enterprise_linux:7::clientAll versions6:4.14.8-6.el7_3
kdelibs Red Hat:enterprise_linux:7::computenodeAll versions6:4.14.8-6.el7_3
kdelibs-apidocs Red Hat:enterprise_linux:7::computenodeAll versions6:4.14.8-6.el7_3
kdelibs-common Red Hat:enterprise_linux:7::computenodeAll versions6:4.14.8-6.el7_3
kdelibs-debuginfo Red Hat:enterprise_linux:7::computenodeAll versions6:4.14.8-6.el7_3
kdelibs-devel Red Hat:enterprise_linux:7::computenodeAll versions6:4.14.8-6.el7_3
kdelibs-ktexteditor Red Hat:enterprise_linux:7::computenodeAll versions6:4.14.8-6.el7_3
kdelibs Red Hat:enterprise_linux:7::serverAll versions6:4.14.8-6.el7_3
kdelibs-apidocs Red Hat:enterprise_linux:7::serverAll versions6:4.14.8-6.el7_3
kdelibs-common Red Hat:enterprise_linux:7::serverAll versions6:4.14.8-6.el7_3
kdelibs-debuginfo Red Hat:enterprise_linux:7::serverAll versions6:4.14.8-6.el7_3
kdelibs-devel Red Hat:enterprise_linux:7::serverAll versions6:4.14.8-6.el7_3
kdelibs-ktexteditor Red Hat:enterprise_linux:7::serverAll versions6:4.14.8-6.el7_3
kdelibs Red Hat:enterprise_linux:7::workstationAll versions6:4.14.8-6.el7_3
kdelibs-apidocs Red Hat:enterprise_linux:7::workstationAll versions6:4.14.8-6.el7_3
kdelibs-common Red Hat:enterprise_linux:7::workstationAll versions6:4.14.8-6.el7_3
kdelibs-debuginfo Red Hat:enterprise_linux:7::workstationAll versions6:4.14.8-6.el7_3
kdelibs-devel Red Hat:enterprise_linux:7::workstationAll versions6:4.14.8-6.el7_3
kdelibs-ktexteditor Red Hat:enterprise_linux:7::workstationAll versions6:4.14.8-6.el7_3
kdelibs4 SUSE:Linux Enterprise Desktop 12 SP1All versions4.12.0-10.1
kdelibs4 SUSE:Linux Enterprise Desktop 12 SP2All versions4.12.0-10.1
kdelibs4 SUSE:Linux Enterprise Server 12 SP1All versions4.12.0-10.1
kdelibs4 SUSE:Linux Enterprise Server 12 SP2All versions4.12.0-10.1
kdelibs4 SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2All versions4.12.0-10.1
kdelibs4 SUSE:Linux Enterprise Server for SAP Applications 12 SP1All versions4.12.0-10.1
kdelibs4 SUSE:Linux Enterprise Server for SAP Applications 12 SP2All versions4.12.0-10.1
kauth SUSE:Package Hub 12 SP1All versions5.26.0-6.1
kauth SUSE:Package Hub 12 SP1All versions5.26.0-6.1
kdelibs4 SUSE:Package Hub 12 SP1All versions4.14.25-8.2
kdelibs4 SUSE:Package Hub 12 SP1All versions4.14.25-8.2
kdelibs4-apidocs SUSE:Package Hub 12 SP1All versions4.14.25-8.2
kdelibs4-apidocs SUSE:Package Hub 12 SP1All versions4.14.25-8.2
kauth SUSE:Package Hub 12 SP2All versions5.26.0-6.1
kauth SUSE:Package Hub 12 SP2All versions5.26.0-6.1
kdelibs4 SUSE:Package Hub 12 SP2All versions4.14.25-8.2

Products include Kde Kauth, Kde Kdelibs.

How do I fix CVE-2017-8422?

Upgrade to a fixed version.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2017-8422 being exploited?

There is no known exploitation of CVE-2017-8422 in the wild and no public exploit code.

Public exploit code: 1 Exploit-DB entry.

Sources

Also known as DEBIAN-CVE-2017-8422, GHSA-3x3g-jj7x-gr2f, MGASA-2017-0274, RHSA-2017:1264, SUSE-SU-2017:1335-1, UBUNTU-CVE-2017-8422 and 3 more.

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