CVE-2017-8422: High severity KDE KAuth vulnerability
KAuth contains a logic flaw in which the service invoking dbus 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.
Affected versions: kauth < 5.34, kdelibs < 4.14.32
Upstream patches:
kauth: https://commits.kde.org/kauth/df875f725293af53399f5146362eb158b4f9216a kdelibs: https://commits.kde.org/kdelibs/264e97625abe2e0334f97de17f6ffb52582888ab
External References:
https://www.kde.org/info/security/advisory-20170510-1.txt http://seclists.org/oss-sec/2017/q2/240
Other sources
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.
— MITRE
Affected Software
Remediation
Patch Available
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2017-8422?
CVE-2017-8422 is considered a critical vulnerability due to the potential for an attacker to gain root access from an unprivileged account.
How do I fix CVE-2017-8422?
To mitigate CVE-2017-8422, upgrade kdelibs to version 4.14.32 or later, and upgrade kauth to version 5.34 or later.
Which versions are affected by CVE-2017-8422?
CVE-2017-8422 affects kdelibs versions prior to 4.14.32 and kauth versions prior to 5.34.
What type of vulnerability is CVE-2017-8422?
CVE-2017-8422 is a logic flaw in KAuth that allows identity spoofing of the caller.
Can I exploit CVE-2017-8422 without authentication?
Yes, CVE-2017-8422 can be exploited by an attacker without authentication, enabling them to gain elevated privileges.