[jira] [Assigned] (LOG4J2-3371) Log Injection Vulnerability exists in Log4j2 default configuration

["Ralph Goers (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LOG4J2-3371?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ralph Goers reassigned LOG4J2-3371:
-----------------------------------

    Assignee: Ralph Goers

> Log Injection Vulnerability exists in Log4j2 default configuration
> ------------------------------------------------------------------
>
>                 Key: LOG4J2-3371
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-3371
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.17.1
>            Reporter: 4ra1n
>            Assignee: Ralph Goers
>            Priority: Major
>
> For information about log injection, refer to OWASP:
> [https://owasp.org/www-community/attacks/Log_Injection]
>  
> Some time ago, the spring framework revealed two CVE vulnerabilities related to log injection: CVE-2021-22096 and CVE-2021-22060:
> [https://tanzu.vmware.com/security/cve-2021-22096]
> [https://tanzu.vmware.com/security/cve-2021-22060]
> Their fix is to filter the log content, such as not allowing line seprators
>  
> Some time ago, I found a log injection vulnerability in Apache Shiro. Although the vulnerability is effective and can be triggered, they think I should report the problem to Apahce Log4j and prevent such log injection vulnerability under the default configuration
>  
> code(under the default configuration)
> {code:java}
> public static void main(String[] args) {
>    Logger logger = LogManager.getLogger(Main.class);
>    logger.info("test\n00:00:00.000 [main] ERROR com.text.Class -
> xxx\nxxx");
> } {code}
>  
> output(under the default configuration)
> {code:java}
> 09:47:34.190 [main] INFO com.example.Main - test
> 00:00:00.000 [main] ERROR com.text.Class - xxx
> xxx {code}
> On the exploitation of vulnerabilities: for example, add some confused logs, such as forged IP, forged classes, forged error reports and exceptions, which brings trouble to the operation and maintenance personnel and auditors. Further, if there is an internal log analysis platform, and the xxx is wrapped by the script tag, that is, JavaScript code, the platform reading the log may have XSS vulnerabilities.



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