Deserialization in Clojure
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.
Vulnerability class: Insecure Deserialization
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: 0.013 (70.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- hackmd.io/@fe1w0/HyefvRQKp (Exploit, Third Party Advisory)
- clojure.atlassian.net/browse/CLJ-2204 (Exploit, Patch, Vendor Advisory)
- github.com/frohoff/ysoserial/pull/68/files (Patch)
- github.com/clojure/clojure/commit/271674c9b484d798484d134a5ac40a6df15d3ac3 (Patch)
- security.snyk.io/vuln/SNYK-JAVA-ORGCLOJURE-5740378 (Patch, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2017-20189?
- CVE-2017-20189 is a critical-severity vulnerability in Clojure, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2024-01-22.
- How severe is CVE-2017-20189?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2017-20189 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.