CVE-2021-41773
Vulnerability data via CVEDB (Shodan)
A flaw was found in a change made to path normalization in Apache HTTP Server 2.4.49. An attacker could use a path traversal attack to map URLs to files outside the directories configured by Alias-like directives. If files outside of these directories are not protected by the usual default configuration "require all denied", these requests can succeed. If CGI scripts are also enabled for these aliased pathes, this could allow for remote code execution. This issue is known to be exploited in the wild. This issue only affects Apache 2.4.49 and not earlier versions. The fix in Apache HTTP Server 2.4.50 was found to be incomplete, see CVE-2021-42013.
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Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
vuln:CVE-2021-41773product:"Apache Http Server" version:"2.4.49"http.html:"Http Server"More intel sources (5)
vuln:CVE-2021-41773vulnerabilities.cve_id: CVE-2021-41773CVE-2021-41773CVE-2021-41773"CVE-2021-41773" exploit -site:nvd.nist.gov