CVE-2017-8422

HIGH

KDE kdelibs < 4.14.32 and KAuth < 5.34 - Authentication Bypass via CallerID Spoofing

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-8422. PoCs published by Stealth.

AI-analyzed exploit summary This exploit leverages a D-Bus authentication bypass in smb4k's mount helper to execute arbitrary commands as root. It crafts a malicious D-Bus message to inject a command into the mount process, leading to privilege escalation.

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.

Exploits (1)

exploitdb WORKING POC
by Stealth · clocallinux
https://www.exploit-db.com/exploits/42053

This exploit leverages a D-Bus authentication bypass in smb4k's mount helper to execute arbitrary commands as root. It crafts a malicious D-Bus message to inject a command into the mount process, leading to privilege escalation.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Moderate
Reliability
Reliable
Target: smb4k (KDE SMB/CIFS share browser) < 2.0.0
No auth needed
Prerequisites: smb4k installed · D-Bus access · mount helper service running
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (11)

Core 11
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1038480
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/42053/
Patch, Vendor Advisory x_refsource_confirm
https://www.kde.org/info/security/advisory-20170510-1.txt
Issue Tracking, Patch x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=1449647
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/98412
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201706-29
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2017/dsa-3849
Third Party Advisory, VDB Entry mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2017/05/10/3
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:1264

Scores

CVSS v3 7.8
EPSS 0.0031
EPSS Percentile 54.5%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-290
Status published
Products (2)
kde/kauth < 5.33
kde/kdelibs < 4.14.31
Published May 17, 2017
Tracked Since Feb 18, 2026