CVE-2020-2049: 
Cortex XDR vulnerability analysis and mitigation

CVE-2020-2049 is a local privilege escalation vulnerability discovered in Palo Alto Networks Cortex XDR Agent on Windows platform. The vulnerability was disclosed on December 9, 2020, affecting all versions of Cortex XDR Agent 7.1 and 7.2 with content update 149 and earlier versions. This security flaw allows an authenticated local Windows user to execute programs with SYSTEM privileges, provided they have the ability to create files in the Windows root directory (Palo Alto).

The vulnerability is classified as CWE-427 (Uncontrolled Search Path Element) with a CVSSv3.1 Base Score of 7.8 (HIGH). The attack vector is LOCAL, with low attack complexity and low privileges required. The vulnerability requires no user interaction and has high impact on confidentiality, integrity, and availability (Palo Alto).

If exploited, this vulnerability allows authenticated local Windows users to elevate their privileges to SYSTEM level, potentially gaining complete control over the affected system. This could lead to unauthorized access to sensitive system resources and full system compromise (Palo Alto).

The vulnerability requires an authenticated local Windows user with the ability to create files in the Windows root directory (such as C:). The attack complexity is rated as low, indicating that the vulnerability is relatively straightforward to exploit under the given conditions (Palo Alto).

The vulnerability is resolved in Cortex XDR Agent content update version 150 and all later content updates for Cortex XDR Agent 7.1 and 7.2 versions. Content updates are automatically applied for the agent, and no agent version upgrade is required. As a workaround, organizations can prevent local authenticated Windows users from creating files in the Windows root directory (Palo Alto).

The vulnerability was discovered and reported by Chris Au of PwC Hong Kong - Darklab and Xavier DANEST of Decathlon, demonstrating collaborative security research efforts in identifying critical security flaws (Palo Alto).