CVE-2023-28754: ShardingSphere-Agent: Deserialization vulnerability in ShardingSphere Agent

[Weijie Wu <wuweijie () apache org>]

Severity: low

Affected versions:

- ShardingSphere-Agent through 5.3.2

Description:

Deserialization of Untrusted Data vulnerability in Apache ShardingSphere-Agent, which allows attackers to execute 
arbitrary code by constructing a special YAML configuration file.

The attacker needs to have permission to modify the ShardingSphere Agent YAML configuration file on the target machine, 
and the target machine can access the URL with the arbitrary code JAR.
An attacker can use SnakeYAML to deserialize java.net.URLClassLoader and make it load a JAR from a specified URL, and 
then deserialize javax.script.ScriptEngineManager to load code using that ClassLoader. When the ShardingSphere JVM 
process starts and uses the ShardingSphere-Agent, the arbitrary code specified by the attacker will be executed during 
the deserialization of the YAML configuration file by the Agent.

This issue affects ShardingSphere-Agent: through 5.3.2. This vulnerability is fixed in Apache ShardingSphere 5.4.0.

Credit:

Liav Gutman of the JFrog CSO Research team (finder)

References:

https://shardingsphere.apache.org
https://www.cve.org/CVERecord?id=CVE-2023-28754