CVE-2017-8422
First published: Wed May 10 2017(Updated: )
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: <a href="https://commits.kde.org/kauth/df875f725293af53399f5146362eb158b4f9216a">https://commits.kde.org/kauth/df875f725293af53399f5146362eb158b4f9216a</a> kdelibs: <a href="https://commits.kde.org/kdelibs/264e97625abe2e0334f97de17f6ffb52582888ab">https://commits.kde.org/kdelibs/264e97625abe2e0334f97de17f6ffb52582888ab</a> External References: <a href="https://www.kde.org/info/security/advisory-20170510-1.txt">https://www.kde.org/info/security/advisory-20170510-1.txt</a> <a href="http://seclists.org/oss-sec/2017/q2/240">http://seclists.org/oss-sec/2017/q2/240</a>
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kdelibs | <4.14.32 | 4.14.32 |
| redhat/kauth | <5.34 | 5.34 |
| KDE KAuth | <=5.33 | |
| KDE kdelibs3 | <=4.14.31 |
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Reference Links
- https://commits.kde.org/kauth/df875f725293af53399f5146362eb158b4f9216a
- https://commits.kde.org/kdelibs/264e97625abe2e0334f97de17f6ffb52582888ab
- https://www.kde.org/info/security/advisory-20170510-1.txt
- http://seclists.org/oss-sec/2017/q2/240
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1449649
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1449651
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1449650
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1449648
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1449652
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1449650#c3
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1449650#c2
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1449647#c3
- https://access.redhat.com/errata/RHSA-2017:1264
- https://bugzilla.redhat.com/show_bug.cgi?id=1449647
- http://www.debian.org/security/2017/dsa-3849
- http://www.openwall.com/lists/oss-security/2017/05/10/3
- http://www.securityfocus.com/bid/98412
- http://www.securitytracker.com/id/1038480
- https://cgit.kde.org/kauth.git/commit/?id=df875f725293af53399f5146362eb158b4f9216a
- https://cgit.kde.org/kdelibs.git/commit/?id=264e97625abe2e0334f97de17f6ffb52582888ab
- https://security.gentoo.org/glsa/201706-29
- https://www.exploit-db.com/exploits/42053/
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.
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