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Atomicorp WAF Rule 399502

Rule Summary

  • Rule ID: 399502
  • Status: Active
  • Alert message: Atomicorp.com WAF Rules: CVE-2021-30497 Path traversal (absolute) in imageFilePath on /avalancheweb/image (rx)
  • Observed CWEs: None documented
  • Revision: 1
  • Rule severity: Critical (2)
  • Phase: 2 (request body)
  • Request surfaces: Request filename
  • Rule action: deny
  • HTTP status: 403
  • Public tags: CVE-2021-30497, LFI
  • Logging: log, auditlog

Description

This rule detects behavior identified by its current alert as “CVE-2021-30497 Path traversal (absolute) in imageFilePath on /avalancheweb/image (rx)” in the request filename. It evaluates during the request body phase and denies matching traffic with HTTP status 403.

CVEs Referenced by This Rule

The current ModSecurity rule metadata explicitly names the following CVEs. These references explain the rule author’s association; they do not claim that the rule is limited to these vulnerabilities or that this is an exhaustive coverage list.

CVE-2021-30497

Ivanti Avalanche (Premise) 6.3.2 allows remote unauthenticated users to read arbitrary files via Absolute Path Traversal. The imageFilePath parameter processed by the /AvalancheWeb/image endpoint is not verified to be within the scope of the image folder, e.g., the attacker can obtain sensitive information via the C:/Windows/system32/config/system.sav value.

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.