CVE-2022-23305: SQL injection in JDBC Appender in Apache Log4j V1

                							

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CVE-2022-23305: SQL injection in JDBC Appender in Apache Log4j V1

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From: Ralph Goers &lt;rgoers () apache org&gt;

Date: Tue, 18 Jan 2022 14:42:35 +0000

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Severity: high

Description:

By design, the JDBCAppender in Log4j 1.2.x accepts an SQL statement as a configuration parameter where the values to be 
inserted are converters from PatternLayout. The message converter, %m, is likely to always be included. This allows 
attackers to manipulate the SQL by entering crafted strings into input fields or headers of an application that are 
logged allowing unintended SQL queries to be executed.

Note this issue only affects Log4j 1.x when specifically configured to use the JDBCAppender, which is not the default. 
Beginning in version 2.0-beta8, the JDBCAppender was re-introduced with proper support for parameterized SQL queries 
and further customization over the columns written to in logs.

Apache Log4j 1.2 reached end of life in August 2015. Users should upgrade to Log4j 2 as it addresses numerous other 
issues from the previous versions.

Mitigation:

Users should upgrade to Log4j 2 or remove usage of the JDBCAppender from their configurations.

Credit:

Daniel Martin of NCC Group

References:

https://logging.apache.org/log4j/2.x/security.html
https://issues.apache.org/jira/browse/LOG4J2-229

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CVE-2022-23305: SQL injection in JDBC Appender in Apache Log4j V1 Ralph Goers (Jan 18)

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