Cleartext transmission of sensitive information in Apache NiFi
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Information disclosure, Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-319 and CWE-863.
Summary
The template upload API endpoint accepted requests from different domain when sent in conjunction with ARP spoofing + man in the middle (MiTM) attack, resulting in a CSRF attack. The required attack vector is complex, requiring a scenario with client certificate authentication, same subnet access, and injecting malicious code into an unprotected (plaintext HTTP) website which the targeted user later visits, but the possible damage warranted a Severe severity level. Mitigation: The fix to apply Cross-Origin Resource Sharing (CORS) policy request filtering was applied on the Apache NiFi 1.8.0 release. Users running a prior 1.x release should upgrade to the appropriate release.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apache | Apache NiFi | Apache NiFi 1.0.0 - 1.7.1 | — | No fix listed | CNA |
| — | org.apache.nifi:nifi (Maven) | 1.0.0 to before 1.8.0 | 1.8.0 | Patch available | GHSA-3jq8-jg75-rqv6 |
- Apache NiFi VendorApache Affected Apache NiFi 1.0.0 - 1.7.1 Fixed in — No fix listed CNA
- org.apache.nifi:nifi (Maven) Vendor— Affected 1.0.0 to before 1.8.0 Fixed in 1.8.0 Patch available GHSA-3jq8-jg75-rqv6
Remediation
- Fix · GHSA-3jq8-jg75-rqv6 org.apache.nifi:nifi (Maven) Fixed in 1.8.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2018-17195
- 2026-10-03 Alias added: GHSA-3jq8-jg75-rqv6
References
More Apache Nifi vulnerabilities
- TI-2023-17293 Apache NiFi: Potential Code Injection with Database Services using H2 CVSS 3.1HIGH 8.8
- TI-2020-16549 Uncontrolled resource consumption in Eclipse Jetty CVSS 3.1MEDIUM 5.3
- TI-2019-07411 Deserialization of untrusted data in Apache Commons Beanutils CVSS 3.1HIGH 7.3
- TI-2017-11471 Improper input validation in Apache NiFi CVSS 3.0CRITICAL 9.8
- TI-2018-01212 XML external entity injection in Apache NiFi CVSS 3.0CRITICAL 9.8
- TI-2021-03489 Deserialization of untrusted data in jackson-databind CVSS 3.1HIGH 8.1
Sources
- CVE-2018-17195 · CVE Program
- CVE-2018-17195 · NVD
- FIRST EPSS
- GHSA-3jq8-jg75-rqv6 · GitHub Advisory Database · CC BY 4.0
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