CVE-2017-20189 - Vulnerability Details - OpenCVE

Description

In Clojure before 1.9.0, classes can be used to construct a serialized object that executes arbitrary code upon deserialization. This is relevant if a server deserializes untrusted objects.

Published: 2024-01-22

Score: 9.8 Critical

EPSS: 3.4% Low

KEV: No

Impact:

Action:

Analysis

No analysis available yet.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:clojure:clojure:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
Github GHSA	GHSA-jgxc-8mwq-9xqw	Clojure classes can be used to craft a serialized object that runs arbitrary code on deserialization

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.03376.

Exploitation poc

Automatable yes

Technical Impact total

References

Link	Providers
https://clojure.atlassian.net/browse/CLJ-2204
https://github.com/clojure/clojure/commit/271674c9b484d798484d134a5ac40a6df15d3ac3
https://github.com/frohoff/ysoserial/pull/68/files
https://hackmd.io/%40fe1w0/HyefvRQKp
https://security.netapp.com/advisory/ntap-20241108-0002/
https://security.snyk.io/vuln/SNYK-JAVA-ORGCLOJURE-5740378

History

Mon, 03 Nov 2025 22:30:00 +0000

Type	Values Removed	Values Added
References		https://security.netapp.com/advisory/ntap-20241108-0002/

Fri, 30 May 2025 15:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Subscriptions

Clojure Clojure

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2024-01-22T00:00:00.000Z

Updated: 2025-11-03T21:44:02.825Z

Reserved: 2024-01-22T00:00:00.000Z

Link: CVE-2017-20189

Vulnrichment

Updated: 2025-11-03T21:44:02.825Z

NVD

Status : Modified

Published: 2024-01-22T06:15:07.563

Modified: 2025-11-03T22:15:43.787

Link: CVE-2017-20189

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-502

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2017-20189", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2025-11-03T21:44:02.825Z", "dateReserved": "2024-01-22T00:00:00.000Z", "datePublished": "2024-01-22T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2024-01-22T05:13:27.214Z"}, "descriptions": [{"lang": "en", "value": "In Clojure before 1.9.0, classes can be used to construct a serialized object that executes arbitrary code upon deserialization. This is relevant if a server deserializes untrusted objects."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://hackmd.io/%40fe1w0/HyefvRQKp"}, {"url": "https://clojure.atlassian.net/browse/CLJ-2204"}, {"url": "https://github.com/frohoff/ysoserial/pull/68/files"}, {"url": "https://github.com/clojure/clojure/commit/271674c9b484d798484d134a5ac40a6df15d3ac3"}, {"url": "https://security.snyk.io/vuln/SNYK-JAVA-ORGCLOJURE-5740378"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}, "adp": [{"title": "CVE Program Container", "references": [{"url": "https://hackmd.io/%40fe1w0/HyefvRQKp", "tags": ["x_transferred"]}, {"url": "https://clojure.atlassian.net/browse/CLJ-2204", "tags": ["x_transferred"]}, {"url": "https://github.com/frohoff/ysoserial/pull/68/files", "tags": ["x_transferred"]}, {"url": "https://github.com/clojure/clojure/commit/271674c9b484d798484d134a5ac40a6df15d3ac3", "tags": ["x_transferred"]}, {"url": "https://security.snyk.io/vuln/SNYK-JAVA-ORGCLOJURE-5740378", "tags": ["x_transferred"]}, {"url": "https://security.netapp.com/advisory/ntap-20241108-0002/"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T21:44:02.825Z"}}, {"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-502", "lang": "en", "description": "CWE-502 Deserialization of Untrusted Data"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2025-05-08T15:59:16.638577Z", "id": "CVE-2017-20189", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-05-30T14:23:04.458Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://hackmd.io/%40fe1w0/HyefvRQKp", "tags": ["x_transferred"]}, {"url": "https://clojure.atlassian.net/browse/CLJ-2204", "tags": ["x_transferred"]}, {"url": "https://github.com/frohoff/ysoserial/pull/68/files", "tags": ["x_transferred"]}, {"url": "https://github.com/clojure/clojure/commit/271674c9b484d798484d134a5ac40a6df15d3ac3", "tags": ["x_transferred"]}, {"url": "https://security.snyk.io/vuln/SNYK-JAVA-ORGCLOJURE-5740378", "tags": ["x_transferred"]}, {"url": "https://security.netapp.com/advisory/ntap-20241108-0002/"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T21:44:02.825Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2017-20189", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-05-08T15:59:16.638577Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-502", "description": "CWE-502 Deserialization of Untrusted Data"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-05-08T15:59:18.695Z"}}], "cna": {"affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "references": [{"url": "https://hackmd.io/%40fe1w0/HyefvRQKp"}, {"url": "https://clojure.atlassian.net/browse/CLJ-2204"}, {"url": "https://github.com/frohoff/ysoserial/pull/68/files"}, {"url": "https://github.com/clojure/clojure/commit/271674c9b484d798484d134a5ac40a6df15d3ac3"}, {"url": "https://security.snyk.io/vuln/SNYK-JAVA-ORGCLOJURE-5740378"}], "descriptions": [{"lang": "en", "value": "In Clojure before 1.9.0, classes can be used to construct a serialized object that executes arbitrary code upon deserialization. This is relevant if a server deserializes untrusted objects."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "text", "description": "n/a"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2024-01-22T05:13:27.214Z"}}}, "cveMetadata": {"cveId": "CVE-2017-20189", "state": "PUBLISHED", "dateUpdated": "2025-11-03T21:44:02.825Z", "dateReserved": "2024-01-22T00:00:00.000Z", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "datePublished": "2024-01-22T00:00:00.000Z", "assignerShortName": "mitre"}, "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:clojure:clojure:*:*:*:*:*:*:*:*", "matchCriteriaId": "BF6C5ABE-97CB-400C-880A-453F5CA13383", "versionEndExcluding": "1.9.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In Clojure before 1.9.0, classes can be used to construct a serialized object that executes arbitrary code upon deserialization. This is relevant if a server deserializes untrusted objects."}, {"lang": "es", "value": "En Clojure anterior a 1.9.0, las clases se pueden usar para construir un objeto serializado que ejecuta c\u00f3digo arbitrario tras la deserializaci\u00f3n. Esto es relevante si un servidor deserializa objetos que no son de confianza."}], "id": "CVE-2017-20189", "lastModified": "2025-11-03T22:15:43.787", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2024-01-22T06:15:07.563", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Patch", "Vendor Advisory"], "url": "https://clojure.atlassian.net/browse/CLJ-2204"}, {"source": "cve@mitre.org", "tags": ["Patch"], "url": "https://github.com/clojure/clojure/commit/271674c9b484d798484d134a5ac40a6df15d3ac3"}, {"source": "cve@mitre.org", "tags": ["Patch"], "url": "https://github.com/frohoff/ysoserial/pull/68/files"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://hackmd.io/%40fe1w0/HyefvRQKp"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://security.snyk.io/vuln/SNYK-JAVA-ORGCLOJURE-5740378"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Patch", "Vendor Advisory"], "url": "https://clojure.atlassian.net/browse/CLJ-2204"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://github.com/clojure/clojure/commit/271674c9b484d798484d134a5ac40a6df15d3ac3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://github.com/frohoff/ysoserial/pull/68/files"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://hackmd.io/%40fe1w0/HyefvRQKp"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.netapp.com/advisory/ntap-20241108-0002/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://security.snyk.io/vuln/SNYK-JAVA-ORGCLOJURE-5740378"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-502"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-502"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}