Privilege escalation in KDE kauth



Published: 2019-02-27
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-7443
CWE-ID CWE-20
Exploitation vector Local
Public exploit N/A
Vulnerable software
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kauth
Client/Desktop applications / Other client software

Vendor KDE.org

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Input validation error

EUVDB-ID: #VU17877

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-7443

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input passed parameters with arbitrary types to helpers running as root over DBus. A local user can perform denial of service attack or elevate privileges on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kauth: 4.95.0 - 5.55.0

External links

http://kde.org/info/security/advisory-20190209-1.txt


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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