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Apache 2.4.49 - Path Traversal and Remote Code Execution CVE-2021-41773

Severity
CVSSv3 Score
7.5
Vulnerability description

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 expected document root. If files outside of the document root are not protected by "require all denied" these requests can succeed. Additionally, this flaw could leak the source of interpreted files like CGI scripts. This issue is known to be exploited in the wild. This issue only affects Apache 2.4.49 and not earlier versions.\n

Risk description

The risk exists that a remote unauthenticated attacker can fully compromise the server to steal confidential information, install ransomware, or pivot to the internal network.

Recommendation

Upgrade Apache to version 2.4.50 or apply the relevant patch provided by the vendor.

Codename
Not available
Detectable with
Network Scanner
Scan engine
Nuclei
Exploitable with Sniper
No
CVE Published
Oct 5, 2021
Detection added at
Software Type
Not available
Vendor
Not available
Product
Not available