Malicious Ivanti Connect Secure Path Traversal Exploitation of CVE-2024-21887

ATT&CK techniques

Initial Access

Recon
Resource Dev
Initial Access
- T1190Exploit Public-Facing Application
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects HTTP requests to the Ivanti Connect Secure totp user-backup-code endpoint containing path traversal sequences, matching exploitation of CVE-2023-46805 and CVE-2024-21887 described by Unit 42. Attackers chain authentication bypass and command injection through this traversal path to gain unauthenticated remote code execution on the appliance.

Reporting behind it

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Malicious Ivanti Connect Secure Path Traversal Exploitation of CVE-2024-21887

Pivot detection · T1190 · 9 related

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