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The vulnerability exists due to improper input validation within the VPN web server component of Cisco ASA and FTD software. The application fails to correctly authenticate HTTP(S) requests for specific URL endpoints. An attacker can craft a malicious HTTP request containing specially formatted input designed to bypass security checks. This flawed validation logic mistakenly grants access to URLs that are normally protected, leading to an authentication bypass. The core issue is a logic flaw in the request handling mechanism where certain sequences or patterns in the user-supplied data are not scrutinized against authentication rules.
DailyCVE
Platform: Cisco ASA/FTD
Version: Multiple (see list)
Vulnerability: Authentication Bypass
Severity: Medium
Date: 2024
Prediction: Q3 2024
What Undercode Say:
`curl -H “X-Forwarded-For: 127.0.0.1” http://
`nmap -p 443 –script http-vuln-cve2024-20370 `
`!/bin/bash`
`if curl -s –path-as-is “http://$1/+CSCOU+/../+CSCOE+/filename” | grep -q “restricted”; then`
`echo “Vulnerable”`
`fi`
How Exploit:
Craft HTTP request with path traversal or special headers to bypass checks and access restricted pages like `/admin` or /config.
Protection from this CVE:
Apply Cisco updates.
Disable VPN web server.
Use ACL restrictions.
Impact:
Unauthenticated information disclosure.
Potential configuration access.
🎯Let’s Practice Exploiting & Learn Patching For Free:
Sources:
Reported By: www.cve.org
Extra Source Hub:
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