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              "baseSeverity": "HIGH",
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              "value": "Log4cxx must be built with ODBC support, and configured to log messages to a database for this to occur\u003cbr\u003e"
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              "value": "\u003cdiv\u003eSQL injection in Log4cxx when using the ODBC appender to send log messages to a database.\u0026nbsp; No fields sent to the database were properly escaped for SQL injection.\u0026nbsp; This has been the case since at least version 0.9.0(released 2003-08-06)\u003c/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003eNote that Log4cxx is a C++ framework, so only C++ applications are affected.\u003c/div\u003e\u003cdiv\u003eBefore version 1.1.0, the ODBC appender was automatically part of Log4cxx if the library was found when compiling the library.\u0026nbsp; As of version 1.1.0, this must be both explicitly enabled in order to be compiled in.\u003c/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003eThree preconditions must be met for this vulnerability to be possible:\u003c/div\u003e\u003cdiv\u003e1. Log4cxx compiled with ODBC support(before version 1.1.0, this was auto-detected at compile time)\u003c/div\u003e\u003cdiv\u003e2. ODBCAppender enabled for logging messages to, generally done via a config file\u003c/div\u003e\u003cdiv\u003e3. User input is logged at some point. If your application does not have user input, it is unlikely to be affected.\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003eUsers 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. \u003cbr\u003eNote that this fix does require a configuration file update, as the old configuration files will not configure properly.\u0026nbsp; An example is shown below, and more information may be found in the Log4cxx documentation on the ODBCAppender.\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003eExample of old configuration snippet:\u003c/div\u003e\u003cdiv\u003e\u0026lt;appender name=\"SqlODBCAppender\" class=\"ODBCAppender\"\u0026gt;\u003c/div\u003e\u003cdiv\u003e\u0026nbsp;\u0026nbsp;\u0026nbsp; \u0026lt;param name=\"sql\" value=\"INSERT INTO logs (message) VALUES (\u0027%m\u0027)\" /\u0026gt;\u003c/div\u003e\u003cdiv\u003e\u0026nbsp;\u0026nbsp;\u0026nbsp; ... other params here ...\u003c/div\u003e\u003cdiv\u003e\u0026lt;/appender\u0026gt;\u003c/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003eThe migrated configuration snippet with new ColumnMapping parameters:\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003e\u0026lt;appender name=\"SqlODBCAppender\" class=\"ODBCAppender\"\u0026gt;\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003e\u003cdiv\u003e\u003c/div\u003e\u003cdiv\u003e\u0026nbsp; \u0026nbsp; \u0026lt;param name=\"sql\" value=\"INSERT INTO logs (message) VALUES (?)\" /\u0026gt;\u003c/div\u003e\u003cdiv\u003e\u0026nbsp;\u0026nbsp;\u0026nbsp; \u0026lt;param name=\"ColumnMapping\" value=\"message\"/\u0026gt;\u003cbr\u003e\u0026nbsp;\u0026nbsp;\u0026nbsp; ... other params here ...\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003e\u0026lt;/appender\u0026gt;\u003cbr\u003e\u003c/div\u003e\u003cbr\u003e\u003c/div\u003e"
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            {
              "cweId": "CWE-89",
              "description": "CWE-89 Improper Neutralization of Special Elements used in an SQL Command (\u0027SQL Injection\u0027)",
              "lang": "en",
              "type": "CWE"
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        "dateUpdated": "2023-05-08T08:54:10.234Z",
        "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "shortName": "apache"
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      "source": {
        "discovery": "INTERNAL"
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      "title": "Apache Log4cxx: SQL injection when using ODBC appender",
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    "assignerShortName": "apache",
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    "datePublished": "2023-05-08T08:54:10.234Z",
    "dateReserved": "2023-04-22T18:15:20.678Z",
    "dateUpdated": "2024-10-15T18:24:15.291Z",
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