HOMEVULNERABILITIESCVE-2017-20166
CRITICAL

CVE-2017-20166

NVD-CWE-OtherPublished: January 10, 2023· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

Ecto 2.2.0 lacks a certain protection mechanism associated with the interaction between is_nil and raise.

NVD Source

Risk Analysis

Ecto version 2.2.0 lacks necessary protection mechanisms regarding the interaction between nil checks and exception raising. This critical vulnerability allows for potential system-wide impact given its high CVSS score.

No public exploit is known, and it is not listed in the KEV database. The vulnerability is remotely exploitable with low complexity.

Recommended Action

Upgrade the Ecto component to a version that includes the necessary security protections.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2017-20166 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

ecto_project1 product(s)
ecto
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/elixir-ecto/ecto/commit/db55b0cba6525c24ebddc88ef9ae0c1c00620250
PATCHhttps://github.com/elixir-ecto/ecto/commit/db55b0cba6525c24ebddc88ef9ae0c1c00620250
ADVISORYhttps://github.com/advisories/GHSA-2xxx-fhc8-9qvq
ADVISORYhttps://github.com/elixir-ecto/ecto/pull/2125
ADVISORYhttps://github.com/advisories/GHSA-2xxx-fhc8-9qvq
ADVISORYhttps://github.com/elixir-ecto/ecto/pull/2125

All References (8)

→
https://github.com/advisories/GHSA-2xxx-fhc8-9qvqThird Party Advisory
→
https://github.com/elixir-ecto/ecto/commit/db55b0cba6525c24ebddc88ef9ae0c1c00620250Patch · Third Party Advisory
→
https://github.com/elixir-ecto/ecto/pull/2125Exploit · Third Party Advisory
→
https://groups.google.com/forum/#%21topic/elixir-ecto/0m4NPfg_MMU
→
https://github.com/advisories/GHSA-2xxx-fhc8-9qvqThird Party Advisory
→
https://github.com/elixir-ecto/ecto/commit/db55b0cba6525c24ebddc88ef9ae0c1c00620250Patch · Third Party Advisory
→
https://github.com/elixir-ecto/ecto/pull/2125Exploit · Third Party Advisory
→
https://groups.google.com/forum/#%21topic/elixir-ecto/0m4NPfg_MMU

Quick Facts

CVE IDCVE-2017-20166
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessNVD-CWE-Other
CISA KEVNo
Affected1 vendor(s)
PublishedJan 10, 2023

Related CVEs (NVD-CWE-Other)

CVE-2007-2810
10.0
CVE-2004-0348
10.0
CVE-2002-0525
10.0
CVE-2006-1123
10.0
CVE-2000-0584
10.0
CVE-2001-0247
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-20166 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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