What is CVE-2018-1309?

CVE-2018-1309 is a critical-severity vulnerability in Apache Nifi, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.8/10. Published 2018-05-23.

How severe is CVE-2018-1309?

Critical severity. CVSS v3 base score is 9.8 out of 10.

XXE in Apache Nifi

CVE-2018-1309

Apache NiFi External XML Entity issue in SplitXML processor. Malicious XML content could cause information disclosure or remote code execution. The fix to disable external general entity parsing and disallow doctype declarations was applied on the Apache NiFi 1.6.0 release. Users running a prior 1.x release should upgrade to the appropriate release.

Vulnerability class: XXE (XML External Entity)

EPSS: 0.045 (90.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Apache Nifi
Apache Software Foundation Nifi — versions 0.1.0 - 1.5.0

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

security@apache.org (x_refsource_CONFIRM, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2018-1309?: CVE-2018-1309 is a critical-severity vulnerability in Apache Nifi, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.8/10. Published 2018-05-23.
How severe is CVE-2018-1309?: Critical severity. CVSS v3 base score is 9.8 out of 10.