#VU60903 Permissions, Privileges, and Access Controls in kcron - CVE-2022-24986

Vulnerability identifier: #VU60903

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-24986

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
kcron

Vendor: KDE.org

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to improper temporary file handling when reading the existing crontab or saving the new one, which leads to security restrictions bypass and privilege escalation.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

kcron: 2.0.0 - 21.12.2

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External links
https://apps.kde.org/kcron/
https://kde.org/info/security/advisory-20220216-1.txt

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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.