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List:       oss-security
Subject:    [oss-security] [CVE-2020-1947] Apache ShardingSphere(incubator) deserialization vulnerability
From:       Chen QingYang <chenqingyang () apache ! org>
Date:       2020-03-11 4:32:54
Message-ID: CAMNRR76nvdbR33WNWP-Rag0V7pFs-WFCLWv+=saSX0AsqgPC7w () mail ! gmail ! com
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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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