Deserialization in Apache Shardingsphere

CVE-2020-1947

In Apache ShardingSphere(incubator) 4.0.0-RC3 and 4.0.0, the ShardingSphere's web console uses the SnakeYAML library for parsing YAML inputs to load datasource configuration. SnakeYAML allows to unmarshal data to a Java type By using the YAML tag. Unmarshalling untrusted data can lead to security flaws of RCE.

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: 0.339 (98.4th percentile), scored .

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2020-1947: held from 0.339 to 0.339.

EPSS over last 30 days · oldest: 0.339 · newest: 0.339 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-1947?
CVE-2020-1947 is a critical-severity vulnerability in Apache Shardingsphere, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2020-03-11.
How severe is CVE-2020-1947?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-1947 known to be exploited?
45 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.