SQL Injection in Apache Log4j
CVE-2022-23305
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.
Vulnerability class: SQL Injection
EPSS: 0.665 (99.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Apache Log4j
- Apache Software Foundation Log4j 1.x — versions 1.2.1, unspecified
- Broadcom Brocade_sannav
- Netapp Snapmanager
- Oracle Advanced_supply_chain_planning — versions 12.1, 12.2
- Oracle Business_intelligence — versions 5.9.0.0.0, 12.2.1.3.0, 12.2.1.4.0
- Oracle Business_process_management_suite — versions 12.2.1.3.0, 12.2.1.4.0
- Oracle Communications_eagle_ftp_table_base_retrieval — versions 4.5
- Oracle Communications_instant_messaging_server — versions 10.0.1.5.0
- Oracle Communications_messaging_server — versions 8.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (x_refsource_MISC, Vendor Advisory)
- security@apache.org (Mailing List, x_refsource_MISC, Issue Tracking, Vendor Advisory)
- security@apache.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security@apache.org (Patch, Third Party Advisory, x_refsource_MISC)
- security@apache.org (x_refsource_CONFIRM, Third Party Advisory)
- security@apache.org (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2022-23305?
- CVE-2022-23305 is a critical-severity vulnerability in Apache Log4j, classified under SQL Injection. CVSS score: 9.8/10. Published 2022-01-18.
- How severe is CVE-2022-23305?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2022-23305 known to be exploited?
- 39 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.