CVE-2018-0009 : Exploit Details and Defense Strategies
Learn about CVE-2018-0009, a firewall bypass vulnerability on Juniper SRX series devices due to UUID configuration. Find mitigation steps and necessary updates.
Firewall bypass vulnerability on Juniper Networks SRX series devices when UUID with leading zeros is configured.
Understanding CVE-2018-0009
This CVE involves a specific issue on SRX series devices that can lead to a firewall bypass under certain conditions.
What is CVE-2018-0009?
On Juniper Networks SRX series devices, a firewall rule configuration can allow all TCP traffic to pass through if custom application UUIDs starting with zeros are used, potentially bypassing other firewall rules.
The Impact of CVE-2018-0009
This vulnerability can result in unauthorized traffic passing through the device, circumventing intended security measures and potentially compromising network integrity.
Technical Details of CVE-2018-0009
This section provides more in-depth technical information about the CVE.
Vulnerability Description
The issue arises when firewall rules are set to match custom application UUIDs starting with zeros, allowing all TCP traffic to pass through, potentially bypassing other rules.
Affected Systems and Versions
- Affected Platforms: SRX series
- Affected Versions:
- Junos OS 12.1X46 versions prior to 12.1X46-D71
- Junos OS 12.3X48 versions prior to 12.3X48-D55
- Junos OS 15.1X49 versions prior to 15.1X49-D100
Exploitation Mechanism
- Attack Complexity: High
- Attack Vector: Network
- Privileges Required: None
- User Interaction: None
- Scope: Changed
- CVSS Base Score: 5.4 (Medium)
Mitigation and Prevention
Protecting systems from CVE-2018-0009 requires specific actions to mitigate the vulnerability.
Immediate Steps to Take
- Avoid using UUIDs starting with zeros in the configuration to prevent the firewall bypass.
Long-Term Security Practices
- Regularly review and update firewall configurations to ensure they align with security best practices.
- Implement network monitoring to detect any unauthorized traffic or anomalies.
Patching and Updates
- Update to the following software releases to address the vulnerability: 12.1X46-D71, 12.3X48-D55, 15.1X49-D100, 17.3R1, and all subsequent releases.