SERVER-WEBAPP -- Snort has detected traffic exploiting vulnerabilities in web based applications on servers.
SERVER-WEBAPP Apache HTTP Server httpd directory traversal attempt
This rule looks for directory traversal characters in the HTTP URI in the context of /cgi-bin/. This may indicate that an Apache server is under attack.
This rule alerts on attempts to exploit Apache HTTP Server by crafting a directory traversal attack.
No public information
No known false positives
Cisco Talos Intelligence Group
No rule groups
Directory Traversal
A Directory Traversal attack targets HTTP traffic and allows the attacker to access directories outside the applications own, potentially exposing sensitive system files to leakage or overwriting. This is also known as Directory Climbing, Path Traversal, or Backtracking. An alert on this kind of attack indicates a vulnerability in security validation of user input that allows a "traverse to parent directory" or "../" command to pass through. Protect your site by filtering all user input, removing any characters but the allowed data.
CVE-2021-41773 |
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CVE-2021-42013 |
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Tactic: Initial Access
Technique: Exploit Public-Facing Application
For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org
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