What is CVE-2017-12623?

CVE-2017-12623 is a medium-severity vulnerability in Apache Nifi, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 6.5/10. Published 2017-10-10.

How severe is CVE-2017-12623?

Medium severity. CVSS v3 base score is 6.5 out of 10.

XXE in Apache Nifi

CVE-2017-12623

An authorized user could upload a template which contained malicious code and accessed sensitive files via an XML External Entity (XXE) attack. The fix to properly handle XML External Entities was applied on the Apache NiFi 1.4.0 release. Users running a prior 1.x release should upgrade to the appropriate release.

Vulnerability class: XXE (XML External Entity)

EPSS: 0.019 (78.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Apache Nifi — versions 1.0.0, 1.0.1, 1.1.0
Apache Software Foundation Nifi — versions 1.0.0 to 1.3.0

Weakness classification (CWE)

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

References

security@apache.org (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2017-12623?: CVE-2017-12623 is a medium-severity vulnerability in Apache Nifi, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 6.5/10. Published 2017-10-10.
How severe is CVE-2017-12623?: Medium severity. CVSS v3 base score is 6.5 out of 10.