References https://blog.qualys.com/vulnerabilities-threat-research/2021/10/27/apache-http-server-path-traversal-remote-code-execution-cve-2021-41773-cve-2021-42013 https://nvd.nist.gov/vuln/detail/cve-2021-42013 https://www.sentinelone.com/vulnerability-database/cve-2021-42013/ https://explore.alas.aws.amazon.com/CVE-2021-42013.html https://www.cnblogs.com/Pengj/p/17722757.html http://nic.cqrk.edu.cn/2021_10/08_11/content-23756.html https://xxb.gdufe.edu.cn/2021/1028/c6340a144175/page.htm https://blog.csdn.net/weixin_53639243/article/details/136316519 https://inforcenter.dhu.edu.cn/2021/1203/c21439a290437/page.htm https://github.com/K3ysTr0K3R/CVE-2021-42013-EXPLOIT https://github.com/asaotomo/CVE-2021-42013-Apache-RCE-Poc-Exp https://www.asiainfo-sec.com/security/notice/detail-6112.html
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