PT-2018-13945 · Apache · Apache Nifi

Andy Lopresto + 1 · Published 2018-12-19 · Updated 2019-01-11 · CVE-2018-17194

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Apache NiFi versions prior to 1.8.0

Description The issue occurs when a client request to a cluster node is replicated to other nodes for verification, and the Content-Length is forwarded. Specifically, on a DELETE request, the body is ignored, but if the initial request had a Content-Length value other than 0, the receiving nodes would wait for the body and eventually timeout.

Recommendations For Apache NiFi versions prior to 1.8.0, upgrade to Apache NiFi 1.8.0 or a later version to apply the fix that checks DELETE requests and overwrites non-zero Content-Length header values.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2018-17194

GHSA-43FP-VWWG-QGV6

Affected Products

Apache Nifi

References · 8

• https://nifi.apache.org/security.html#CVE-2018-17194 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-17194 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-17194 · Security Note
• https://osv.dev/vulnerability/GHSA-43fp-vwwg-qgv6 · Vendor Advisory
• https://github.com/apache/nifi · Note
• https://github.com/apache/nifi/commit/748cf745628dab20b7e71f12b5dcfe6ed0bbf134 · Note
• https://github.com/apache/nifi/commit/1baead6f525046a613fc4fe494a0d193776ea70f · Note
• https://issues.apache.org/jira/browse/NIFI-5628 · Note