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Posted to user@cassandra.apache.org by Marcus Eriksson <ma...@apache.org> on 2022/02/11 10:03:45 UTC

CVE-2021-44521: Apache Cassandra: Remote code execution for scripted UDFs

Severity: high

Description:

When running Apache Cassandra with the following configuration:

enable_user_defined_functions: true
enable_scripted_user_defined_functions: true
enable_user_defined_functions_threads: false 

it is possible for an attacker to execute arbitrary code on the host. The attacker would need to have enough permissions to create user defined functions in the cluster to be able to exploit this. Note that this configuration is documented as unsafe, and will continue to be considered unsafe after this CVE.

This issue is being tracked as CASSANDRA-17352

Mitigation:

Set `enable_user_defined_functions_threads: true` (this is default)
or
3.0 users should upgrade to 3.0.26
3.11 users should upgrade to 3.11.12
4.0 users should upgrade to 4.0.2

Credit:

This issue was discovered by Omer Kaspi of the JFrog Security vulnerability research team.