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Date: Wed, 11 Mar 2020 12:32:54 +0800
From: Chen QingYang <chenqingyang@...che.org>
To: oss-security@...ts.openwall.com
Subject: [CVE-2020-1947] Apache ShardingSphere(incubator) deserialization vulnerability

CVE-2020-1947: Apache ShardingSphere(incubator) deserialization
vulnerability

Severity: low

Vendor:
The Apache Software Foundation

Versions Affected:
ShardingSphere 4.0.0-RC3, 4.0.0

Description:
Apache 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.

Mitigation:
4.0.0-RC3 and 4.0.0 users should upgrade to 4.0.1

Example:
An attacker can use untrusted data to fill in the DataSource Config after
login the sharding-ui.

Credit:
This issue was discovered by WuXiong of QI`ANXIN YUNYING Labs.

References:
https://shardingsphere.apache.org/community/en/security/


Chen QingYang
Apache ShardingSphere

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