CVE-2020-13162 Information

Description

A time-of-check time-of-use vulnerability in PulseSecureService.exe in Pulse Secure Client versions prior to 9.1.6 down to 5.3 R70 for Windows (which runs as NT AUTHORITY/SYSTEM) allows unprivileged users to run a Microsoft Installer executable with elevated privileges.

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

http://packetstormsecurity.com/files/158117/Pulse-Secure-Client-For-Windows-Local-Privilege-Escalation.html http://packetstormsecurity.com/files/159065/Pulse-Secure-Windows-Client-Privilege-Escalation.html http://seclists.org/fulldisclosure/2020/Jun/25 http://seclists.org/fulldisclosure/2020/Sep/15 https://kb.pulsesecure.net/?atype=sa https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44503 https://twitter.com/gsepcali/status/1262551597990711296 https://twitter.com/gsepcali/status/1272927080909623297 https://twitter.com/sepcali/status/1262551597990711296 https://www.redtimmy.com/privilege-escalation/pulse-secure-client-for-windows-9-1-6-toctou-privilege-escalation-cve-2020-13162/

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.0