SB2021111112 - Buffer overflow in PAN-OS GlobalProtect Clientless VPN
Published: November 11, 2021
Security Bulletin ID
SB2021111112
Severity
Critical
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2021-3056)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in the PAN-OS GlobalProtect Clientless VPN during SAML authentication. A remote attacker can send specially crafted request to the system, trigger memory corruption and execute arbitrary code with root privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.