Privilege escalation in Apache NiFi

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU78807

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 - Permissions, Privileges, and Access Controls

Exploit availability: No

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

CPE2.3

• cpe:2.3:a:apache_foundation:apache_nifi:0.2:*:*:*:*:*:*:*
• cpe:2.3:a:apache_foundation:apache_nifi:0.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:apache_foundation:apache_nifi:0.3:*:*:*:*:*:*:*

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

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.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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