WS-2021-0497
Published:December 21, 2021
Updated:October 07, 2026
ClickHouse JDBC Bridge uses "slf4j-log4j12 1.7.32" (https://repo1.maven.org/maven2/org/slf4j/slf4j-log4j12/1.7.32/), which depends on "log4j 1.2.17" (https://repo1.maven.org/maven2/log4j/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.
Related Resources (5)
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Contact UsCVSS v4
Base Score:
9.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Deserialization of Untrusted Data