Improper input validation in Apache Struts
CVE-2017-9791
The Struts 1 plugin in Apache Struts 2.1.x and 2.3.x might allow remote code execution via a malicious field value passed in a raw message to the ActionMessage.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.989 (99.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Apache Struts — versions 2.3.1, 2.3.1.1, 2.3.1.2
- Apache Software Foundation Struts — versions 2.3.x series, 2.1.x series
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- security@apache.org (x_refsource_CONFIRM, Patch, Third Party Advisory)
- security@apache.org (VDB Entry, Third Party Advisory, vdb-entry, Broken Link, x_refsource_BID)
- security@apache.org (VDB Entry, Third Party Advisory, exploit, x_refsource_EXPLOIT-DB)
- security@apache.org (x_refsource_CONFIRM, Mitigation, Vendor Advisory)
- security@apache.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK, Broken Link)
- security@apache.org (VDB Entry, Third Party Advisory, exploit, x_refsource_EXPLOIT-DB)
- security@apache.org (x_refsource_CONFIRM, Third Party Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2017-9791?
- CVE-2017-9791 is a critical-severity vulnerability in Apache Struts, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2017-07-10.
- How severe is CVE-2017-9791?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2017-9791 known to be exploited?
- Yes. CVE-2017-9791 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-02-10), indicating it is being actively exploited. 55 public proof-of-concept repositories are indexed.