CVE-2022-23305

Summary

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.

Affected Software

VendorProductVersion RangeStatus
Apache Software FoundationApache Log4j 1.x1.2.1 < unspecifiedaffected
Apache Software FoundationApache Log4j 1.xunspecified < 2.0-alpha1affected

Weaknesses

  • CWE-89: CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Workarounds

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

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: total

References