SB2022020929 - Multiple vulnerabilities in GlobalProtect Agent
Published: February 9, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Inclusion of Sensitive Information in Log Files (CVE-ID: CVE-2022-0021)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to software stores cleartext credentials of the connecting GlobalProtect user when authenticating using Connect Before Logon feature. A local user can read the log files and gain access to sensitive data.
2) Information disclosure (CVE-ID: CVE-2022-0018)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to credentials of the local user account are sent to the GlobalProtect portal when the Single Sign-On feature is enabled in the GlobalProtect portal configuration. A remote attacker can perform MitM attack and intercept credentials.
This vulnerability is a concern where the GlobalProtect app is deployed on Bring-your-Own-Device (BYOD) type of clients with private local user accounts or GlobalProtect app is used to connect to different organizations.
3) Link following (CVE-ID: CVE-2022-0017)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to insecure link following issue. A local user can create a specially crafted symbolic link to a critical file on the system and overwrite it with SYSTEM privileges.
4) Improper Check or Handling of Exceptional Conditions (CVE-ID: CVE-2022-0016)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper handling of exceptional conditions within the Connect Before Logon feature. A local user can under certain circumstances execute arbitrary code with SYSTEM privileges when authenticating with Connect Before Logon.
Remediation
Install update from vendor's website.