8.8

CVE-2023-31038

Exploit

SQL injection in Log4cxx when using the ODBC appender to send log messages to a database.  No fields sent to the database were properly escaped for SQL injection.  This has been the case since at least version 0.9.0(released 2003-08-06)




Note that Log4cxx is a C++ framework, so only C++ applications are affected.

Before version 1.1.0, the ODBC appender was automatically part of Log4cxx if the library was found when compiling the library.  As of version 1.1.0, this must be both explicitly enabled in order to be compiled in.




Three preconditions must be met for this vulnerability to be possible:

1. Log4cxx compiled with ODBC support(before version 1.1.0, this was auto-detected at compile time)

2. ODBCAppender enabled for logging messages to, generally done via a config file

3. User input is logged at some point. If your application does not have user input, it is unlikely to be affected.





Users are recommended to upgrade to version 1.1.0 which properly binds the parameters to the SQL statement, or migrate to the new DBAppender class which supports an ODBC connection in addition to other databases. 
Note that this fix does require a configuration file update, as the old configuration files will not configure properly.  An example is shown below, and more information may be found in the Log4cxx documentation on the ODBCAppender.





Example of old configuration snippet:

<appender name="SqlODBCAppender" class="ODBCAppender">

    <param name="sql" value="INSERT INTO logs (message) VALUES ('%m')" />

    ... other params here ...

</appender>




The migrated configuration snippet with new ColumnMapping parameters:


<appender name="SqlODBCAppender" class="ODBCAppender">




    <param name="sql" value="INSERT INTO logs (message) VALUES (?)" />

    <param name="ColumnMapping" value="message"/>
    ... other params here ...


</appender>





Daten sind bereitgestellt durch National Vulnerability Database (NVD)
ApacheLog4cxx Version >= 0.9.0 < 1.1.0
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.39% 0.593
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
134c704f-9b21-4f2e-91b3-4a467353bcc0 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.