CVE-2017-20189
CRITICALCVSS 9.8/10EPSS 1.32%
Last modified
CVE-2017-20189 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 1.32% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Clojure | Clojure | < 1.9.0 |
References
- https://clojure.atlassian.net/browse/CLJ-2204Exploit, Patch, Vendor Advisory
- https://hackmd.io/%40fe1w0/HyefvRQKpExploit, Third Party Advisory
- https://security.snyk.io/vuln/SNYK-JAVA-ORGCLOJURE-5740378Patch, Third Party Advisory
- https://clojure.atlassian.net/browse/CLJ-2204Exploit, Patch, Vendor Advisory
- https://hackmd.io/%40fe1w0/HyefvRQKpExploit, Third Party Advisory
- https://security.snyk.io/vuln/SNYK-JAVA-ORGCLOJURE-5740378Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2017-20189?
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.
How severe is CVE-2017-20189?
CVE-2017-20189 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.32% probability of exploitation in the next 30 days.
How do I fix CVE-2017-20189?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2017-20189?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST