Horizon Alert
Summary of the vulnerability and why it matters
Certain versions of WatchGuard Fireware OS are susceptible to an out-of-bounds write vulnerability. This flaw can be exploited by a remote, unauthenticated attacker. Successful exploitation could allow an attacker to execute arbitrary code, potentially leading to significant business risk.
- Vulnerable: WatchGuard Fireware OS
- Flaw: Out-of-bounds write
- Impact: Arbitrary code execution
Attack Path
How an attacker could exploit the issue
This vulnerability allows a remote attacker to execute arbitrary code on affected systems. The attack targets specific VPN configurations, namely Mobile User VPN and Branch Office VPN when using IKEv2 with a dynamic gateway peer. This could lead to unauthorized access and control over the network infrastructure.
- Publicly accessible VPNs
- Unauthenticated remote attacker
- Trigger arbitrary code execution
Live Threat
Current exploitation, exposure, and threat context
A critical vulnerability exists in WatchGuard Fireware OS that could allow a remote attacker to execute arbitrary code. This vulnerability impacts specific configurations of Mobile User VPN and Branch Office VPN using IKEv2. The potential for remote, unauthenticated code execution presents a significant risk to organizational security.
- Likely attacker skill level: Low.
- Required access or conditions: Network access.
- Business risk or urgency: Critical.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
The organization should address a critical vulnerability impacting its WatchGuard Fireware OS. This vulnerability, an out-of-bounds write, could permit an unauthenticated remote attacker to execute arbitrary code on affected systems. The risk arises when Mobile User VPN and Branch Office VPN services are configured with dynamic gateway peers. The vendor has released fixes for this issue.
- Identify all Fireware OS assets.
- Disable VPN services or implement vendor workarounds.
- Apply vendor fixes and validate.
- Monitor for related security events.
