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Atomicorp WAF Rule 390149

Rule Summary

  • Rule ID: 390149
  • Status: Active
  • Alert message: Atomicorp.com WAF Rules: Possible remote shell or bot access denied
  • Observed CWEs: None documented
  • Revision: 61
  • Rule severity: Critical (2)
  • Phase: 4 (response body)
  • Request surfaces: Response body
  • Rule action: deny
  • HTTP status: 404
  • Logging: log, auditlog

Description

This rule detects if a running web application appears to be a known or suspected remote shell or bot. It does this by looking at the output from the application.

Note: This rule, and all content inspection rules, require a fast server. If your server is not fast enough to support outbound content inspection rules you will need to disable SecResponseBodyAccess.

False Positives

A false positive can occur when an application legitimately behaves in a manner similar to a shell or bot like tool, or if its output matches known patterns used by shells and bots. The rules contain a large library of known web applications and safe methods that a non-malicious, and can detect these known safe web applications and non-malicious methods and ignore them. However it is possible for a new or custom application to trigger this application and incorrectly trigger this rule.

It is not recommended that you disable this rule if you have a false positive. If you believe this is a false positive, please report this to our security team to determine if this is a legitimate case, or if its clever attack on your system. Instructions to report false positives are detailed on the Reporting False Positives wiki page. If it is a false positive, we will fix the issue in the rules and get a release out to you promptly.

Tuning Guidance

If you know that this behaviour is acceptable for your application, you can tune it by following the Tuning the Atomicorp WAF Rules page.

This is a selected list of documented research observations, not an exhaustive coverage matrix. Absence of a CVE does not imply absence of protection.

No selected related public CVE research notes are currently published.

Documentation Source

  • Original wiki page: WAF 390149
  • Source revision: 3550
  • Source revision date: 2013-06-25