CVE-2017-9787

Struts vulnerability

CVSS

7.5

EPSS

9.7%

EPSS pct

95th

Exploited

No known

When using a Spring AOP functionality to secure Struts actions it is possible to perform a DoS attack. Solution is to upgrade to Apache Struts version 2.5.12 or 2.3.33.

Affected vendor

Apache

Affected product

Struts

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Published

2017-07-13

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 availability.

Its EPSS score of 9.7% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 95% of all scored CVEs.

Check your external exposure to CVE-2017-9787

Confirm whether Apache Struts is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2017-9787.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2017-9787

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2017-9787 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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