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WS-2021-0497

Date: August 19, 2025

ClickHouse JDBC Bridge before 2.0.7 uses slf4j-log4j12 1.7.32, which depends on log4j 1.2.17. It allows a remote attacker to execute code on the server, if you changed default log4j configuration by adding JMSAppender and an insecure JMS broker.

Language: Java

Severity Score

Related Resources (6)

https://github.com/ClickHouse/clickhouse-jdbc-bridge
https://github.com/ClickHouse/clickhouse-jdbc-bridge/security/advisories/GHSA-3w6p-8f82-gw8r
https://github.com/ClickHouse/clickhouse-jdbc-bridge/commit/12dbc624517cad18ed710c6766150cdb7659b1c8
https://nvd.nist.gov/vuln/detail/CVE-2021-4104
https://access.redhat.com/security/cve/CVE-2021-4104
https://www.mend.io/vulnerability-database/WS-2021-0497

Severity Score

Weakness Type (CWE)

Configuration

CWE-16

Code

CWE-17

Deserialization of Untrusted Data

CWE-502

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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