#VU78807 Permissions, Privileges, and Access Controls in Apache Nifi - CVE-2023-36542

Vulnerability identifier: #VU78807

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-2023-36542

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Apache Nifi
Server applications / Database software

Vendor: Apache Foundation

Description

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

The vulnerability exists due to application allows unprivileged users to reference an external URL for retrieving drivers. A local user can configure the application to retrieve malicious code from an external URL and execute it on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Nifi: 0.2 - 1.22.0

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External links
https://lists.apache.org/thread/swnly3dzhhq9zo3rofc8djq77stkhbof
https://nifi.apache.org/security.html#CVE-2023-36542
https://www.openwall.com/lists/oss-security/2023/07/29/1
https://seclists.org/fulldisclosure/2023/Jul/43

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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.