Possible Citrix ShareFile Unauthenticated Upload Path Traversal Webshell (CVE-2023-24489) (via webserver)

ATT&CK techniques

Initial Access → Persistence

Recon
Resource Dev
Initial Access
- T1190Exploit Public-Facing Application
Execution
Persistence
- T1505.003Web Shell
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects unauthenticated POST requests to the ShareFile storage controller upload endpoints carrying a traversal uploadid and archive extraction flags. This maps to CVE-2023-24489 where a cryptographic flaw allows uploading and unzipping an ASPX webshell outside the intended directory. An attacker uses this to achieve remote code execution and persistence.

Reporting behind it

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Possible Citrix ShareFile Unauthenticated Upload Path Traversal Webshell (CVE-2023-24489) (via webserver)

Pivot detection · T1190 · 9 related

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