THREATPORT/VULNERABILITY/CVE-2017-5636
CRITICAL SEVERITY

CVE-2017-5636

Nifi vulnerability

CVSS
9.8
EPSS
3.6%
EPSS pct
88th
Exploited
No known
In Apache NiFi before 0.7.2 and 1.x before 1.1.2 in a cluster environment, the proxy chain serialization/deserialization is vulnerable to an injection attack where a carefully crafted username could impersonate another user and gain their permissions on a replicated request to another node.
Affected vendor
Apache
Affected product
Nifi
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2017-10-19

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 3.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2017-5636

  • Confirm whether Apache Nifi is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2017-5636.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2017-5636

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2017-5636 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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