SB2021120715 - Remote code execution in FortiGate FortiOS SSL VPN
Published: December 7, 2021
Security Bulletin ID
SB2021120715
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) Integer overflow (CVE-ID: CVE-2021-26109)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow in the SSL VPN interface. A remote non-authenticated attacker can send a specially crafted HTTP request to the SSL VPN interface, trigger integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.