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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.989 (99.9th percentile), scored .
Very high probability of exploitation in the next 30 days — among the top 0.1% most-likely-to-be-exploited CVEs. 100th percentile — 99.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.989 · newest: 0.989 · change: 0.000
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
- www.oracle.com/technetwork/security-advisory/alert-cve-2017-9805-3889403.html (Patch, Third Party Advisory)
- www.securityfocus.com/bid/99484 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
- www.exploit-db.com/exploits/42324/ (VDB Entry, Third Party Advisory, exploit)
- struts.apache.org/docs/s2-048.html (Mitigation, Vendor Advisory)
- www.securitytracker.com/id/1038838 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
- www.exploit-db.com/exploits/44643/ (VDB Entry, Third Party Advisory, exploit)
- security.netapp.com/advisory/ntap-20180706-0002/ (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.