SB2020061107 - Multiple vulnerabilities in Palo Alto Networks GlobalProtect app
Published: June 11, 2020 Updated: June 11, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-ID: CVE-2020-2032)
CWE-ID: CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a Time-of-check Time-of-use (TOCTOU) issue during upgrade. An local user can execute arbitrary programs with SYSTEM privileges.
2) Improper Certificate Validation (CVE-ID: CVE-2020-2033)
CWE-ID: CWE-295 - Improper Certificate Validation
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to perform a man-in-the-middle (MitM) attack.
The vulnerability exists due to a missing certification validation, when the pre-logon feature is enabled. A remote attacker on the local network can perform a MitM attack, disclose the pre-logon authentication cookie and access the GlobalProtect Server as allowed by configured Security rules for the "pre-login" user.
Remediation
Install update from vendor's website.