CVE-2020-1634 : Exploit Details and Defense Strategies
Discover the impact of CVE-2020-1634, a high-severity vulnerability in Junos OS on High-End SRX Series devices. Learn about the affected versions, mitigation steps, and necessary updates.
On High-End SRX Series devices, in specific configurations, multicast traffic can cause all FPCs to reset, leading to denial of service.
Understanding CVE-2020-1634
This CVE details a vulnerability in Junos OS affecting High-End SRX Series devices.
What is CVE-2020-1634?
- The issue occurs when an SPC receiving genuine multicast traffic cores, causing all FPCs in a chassis to reset, impacting both IPv4 and IPv6.
- Affected version: Junos OS 12.3X48-D80 and prior to 12.3X48-D95 on High-End SRX Series.
The Impact of CVE-2020-1634
- CVSS v3.1 Base Score: 7.5 (High severity)
- Attack Vector: Network
- Availability Impact: High
Technical Details of CVE-2020-1634
This section provides specific technical information about the vulnerability.
Vulnerability Description
- Vulnerability Type: Denial of Service (DoS)
- CWE ID: CWE-190 Integer Overflow or Wraparound
Affected Systems and Versions
- Platforms: High-End SRX Series
- Software: Junos OS
- Versions: 12.3X48-D80 and prior to 12.3X48-D95
Exploitation Mechanism
- Low attack complexity
- No privileges required
- No user interaction required
Mitigation and Prevention
Steps to address and prevent the vulnerability.
Immediate Steps to Take
- Update to Junos OS 12.3X48-D95 or later.
- Follow vendor instructions for mitigation.
Long-Term Security Practices
- Regularly update software and firmware.
- Implement network segmentation and access controls.
- Monitor network traffic for anomalies.
Patching and Updates
- Juniper has released software updates starting from version 12.3X48-D95.