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AUSCERT External Security Bulletin Redistribution
ESB-2024.2567
PAN-SA-2024-0005 Informational Bulletin: Proof of Concept (PoC) Bypasses
Protection Modules in Cortex XDR Agent
26 April 2024
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AusCERT Security Bulletin Summary
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Product: Cortex XDR
Publisher: Palo Alto Networks
Operating System: Windows
Resolution: Patch/Upgrade
Original Bulletin:
https://securityadvisories.paloaltonetworks.com/PAN-SA-2024-0005
Comment: CVSS (Max): None available when published
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Palo Alto Networks Security Advisories / PAN-SA-2024-0005
PAN-SA-2024-0005 Informational Bulletin: Proof of Concept (PoC) Bypasses
Protection Modules in Cortex XDR Agent
Published 2024-04-24
Updated 2024-04-24
Reference
Discovered externally
Description
The Palo Alto Networks Product Security Assurance team is aware of research
presented by SafeBreach entitled "The Dark Side of EDR", describing a
specifically crafted proof of concept (PoC) that bypasses Cortex XDR agent
endpoint protection modules. Practical attack scenarios require administrative
privileges to perform this bypass.
The technique presented is detected and blocked in agents with CU-1320 and
later content updates. This issue does not represent a product vulnerability
risk to customers using Cortex XDR agent. This issue is not applicable to Mac
OS and Linux platforms.
Product Status
Versions Affected Unaffected
Cortex XDR < Agents with content update >= Agents with CU-1320 or a later
Agent 8.4 earlier than CU-1320 on Windows content update on Windows
Cortex XDR < Agents with content update >= Agents with CU-1320 or a later
Agent 8.3 earlier than CU-1320 on Windows content update on Windows
Cortex XDR < Agents with content update >= Agents with CU-1320 or a later
Agent 8.2 earlier than CU-1320 on Windows content update on Windows
Cortex XDR < Agents with content update >= Agents with CU-1320 or a later
Agent 8.1 earlier than CU-1320 on Windows content update on Windows
Cortex XDR < Agents with content update >= Agents with CU-1320 or a later
Agent 8.0 earlier than CU-1320 on Windows content update on Windows
Cortex XDR < Agents with content update >= Agents with CU-1320 or a later
Agent 7.9 earlier than CU-1320 on Windows content update on Windows
Cortex XDR All agents on Windows
Agent 5.0
Exploitation Status
Palo Alto Networks is not aware of any malicious exploitation of this issue.
Solution
Cortex XDR agent content update CU-1320 detects and prevents this technique.
No updates are planned for Cortex XDR agent 5.0 as it does not have the
relevant Behavioral Threat Protection module required to detect this technique.
Acknowledgments
Palo Alto Networks thanks Shmuel Cohen of SafeBreach for discovering and
reporting this issue.
Timeline
2024-04-24 Initial publication
Terms of usePrivacyProduct Security Assurance and Vulnerability Disclosure
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(C) 2024 Palo Alto Networks, Inc. All rights reserved.
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