CVE-2017-17405

HIGHNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because EPSS predicts 89% probability of exploitation within the next 30 days (top 0.5% of all CVEs). NVD baseline CVSS 8.8 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, ghsa, nvd
Elevated
8.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 74%
CISA-KEV: Not listedEPSS: 74%CVSS: 8.8Exploit: NoneExposed: 0

A fix is available — apply it.

Ruby before 2.4.3 allows Net::FTP command injection. Net::FTP#get, getbinaryfile, gettextfile, put, putbinaryfile, and puttextfile use Kernel#open to open a local file. If the localfile argument starts with the "|" pipe character, the command following the pipe character is executed. The default value of localfile is File.basename(remotefile), so malicious FTP servers could cause arbitrary command execution.

CVSS v3
8.8
EG Score
9.0(high)
EPSS
99.4%
KEV
Not listed

Published

December 15, 2017

Last Modified

May 13, 2026

Advisory Details (10)

Auto-updated May 22, 2026
Patch available. Sources: redhat.
generic Patch Available

[SECURITY] [DLA 1421-1] ruby2.1 security update

https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
generic Patch Available

[SECURITY] [DLA 1221-1] ruby1.9.1 security update

https://lists.debian.org/debian-lts-announce/2017/12/msg00025.html
generic Patch Available

[SECURITY] [DLA 1222-1] ruby1.8 security update

https://lists.debian.org/debian-lts-announce/2017/12/msg00024.html
redhat Patch Available

Affected: Red Hat Enterprise Linux 7.3 Advanced Update Support, Red Hat Enterprise Linux 7.3 Telco Extended Update Support, and Red Hat

https://access.redhat.com/errata/RHSA-2019:2806
redhat Patch Available
https://access.redhat.com/errata/RHSA-2018:0585
redhat Patch Available
https://access.redhat.com/errata/RHSA-2018:0584
redhat Patch Available
https://access.redhat.com/errata/RHSA-2018:0583
redhat Patch Available

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2018:0378
generic
http://www.securitytracker.com/id/1042004
generic
http://www.securityfocus.com/bid/102204

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubunturuby2.3 (2.3.3-1ubuntu1.1) @ artful2026-05-22ubuntu
redhatruby-0:2.0.0.648-30.el7_32019-09-19redhat
redhatrh-ruby23-ruby-0:2.3.6-67.el72018-03-26redhat
redhatrh-ruby22-ruby-0:2.2.9-19.el72018-03-26redhat
redhatrh-ruby24-ruby-0:2.4.3-90.el72018-03-26redhat
redhatruby-0:2.0.0.648-33.el7_42018-02-28redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

All Vendor Advisories

(6)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 5× in last 7d / 21× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 02:20 UTCEPSS rescore
  2. 2026-07-01 15:02 UTCEPSS rescore
  3. 2026-07-01 15:02 UTCEPSS rescore
  4. 2026-06-30 23:19 UTCEPSS rescore
  5. 2026-06-30 23:19 UTCEPSS rescore
  6. 2026-06-29 14:03 UTCEPSS rescore
  7. 2026-06-28 04:53 UTCEPSS rescore
  8. 2026-06-25 13:47 UTCEPSS rescore
  9. 2026-06-25 13:47 UTCEPSS rescore
  10. 2026-06-24 14:02 UTCEPSS rescore
  11. 2026-06-23 21:30 UTCEPSS rescore
  12. 2026-06-22 20:35 UTCOSV refresh
  13. 2026-06-21 14:54 UTCEPSS rescore
  14. 2026-06-21 14:54 UTCEPSS rescore
  15. 2026-06-18 17:50 UTCEPSS rescore
  16. 2026-06-17 17:50 UTCEPSS rescore
  17. 2026-06-15 17:45 UTCEPSS rescore
  18. 2026-06-13 22:57 UTCEPSS rescore
  19. 2026-06-12 23:09 UTCEPSS rescore
  20. 2026-06-11 13:57 UTCEPSS rescore
  21. 2026-06-10 22:15 UTCEPSS rescore
  22. 2026-06-07 15:22 UTCEPSS rescore
  23. 2026-06-07 15:22 UTCEPSS rescore
  24. 2026-06-05 22:44 UTCEPSS rescore
  25. 2026-06-05 10:57 UTCOSV refresh
Show 16 more
  1. 2026-06-01 13:49 UTCEPSS rescore
  2. 2026-06-01 13:49 UTCEPSS rescore
  3. 2026-05-28 13:42 UTCEPSS rescore
  4. 2026-05-28 13:42 UTCEPSS rescore
  5. 2026-05-26 07:17 UTCEPSS rescore
  6. 2026-05-26 07:17 UTCEPSS rescore
  7. 2026-05-22 21:15 UTCEPSS rescore
  8. 2026-05-22 21:15 UTCEPSS rescore
  9. 2026-05-22 21:15 UTCEPSS rescore
  10. 2026-05-22 07:13 UTCEG score recompute
  11. 2026-05-22 07:13 UTCVendor advisory
  12. 2026-05-22 07:12 UTCGHSA enrichment
  13. 2026-05-20 22:37 UTCEPSS rescore
  14. 2026-05-20 22:37 UTCEPSS rescore
  15. 2026-05-18 21:30 UTCEPSS rescore
  16. 2026-05-18 21:30 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-43381
    First seen Dec 2, 2017

    Ruby < 2.2.8 / < 2.3.5 / < 2.4.2 / < 2.5.0-preview1 - 'NET::Ftp' Command Injection

    Open source ↗

Frequently asked(5)

What is CVE-2017-17405?
CVE-2017-17405 is a high vulnerability published on December 15, 2017. Ruby before 2.4.3 allows Net::FTP command injection. Net::FTP#get, getbinaryfile, gettextfile, put, putbinaryfile, and puttextfile use Kernel#open to open a local file. If the localfile argument starts with the "|" pipe character, the command following the pipe character is executed. The default…
When was CVE-2017-17405 disclosed?
CVE-2017-17405 was first published in the National Vulnerability Database on December 15, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-17405 actively exploited?
CVE-2017-17405 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-17405?
CVE-2017-17405 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
How do I remediate CVE-2017-17405?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-17405, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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