CVE-2019-0007

Junos OS: vMX series: Predictable IP ID sequence numbers vulnerability

Critical · published January 15, 2019

CVSS v3.0
9.3
EPSS
2%
Percentile
77.4
In the wild
Unconfirmed
What it is

🔥 A predictable IP ID Sequence Number in Juniper's vMX Series could open the door to some real trouble! Think of it like a postal service that uses a set order for tracking numbers — if attackers know this sequence, they can anticipate where each package (data packet) is headed. This allows them to intercept deliveries and potentially wreak havoc! This vulnerability could enable attackers to launch various types of IP spoofing or man-in-the-middle attacks. With the right exploitation, they could hijack sessions or disrupt communications between clients and the server, leading to compromised data and services. Absolutely devastating!

Put simply

Think of it like a postal service that uses a set order for tracking numbers — if attackers know this sequence, they can anticipate where each package (data packet) is headed. This allows them to intercept deliveries and potentially wreak havoc! The flaw lies in the predictable nature of the IP ID sequence numbers used by the vMX Series software, which can be exploited by attackers to predict the flow of packets and carry out attacks based on this information.

What to do

This vulnerability could enable attackers to launch various types of IP spoofing or man-in-the-middle attacks. With the right exploitation, they could hijack sessions or disrupt communications between clients and the server, leading to compromised data and services. Absolutely devastating! To protect your systems, upgrade to Junos OS version 15.1F5 or later immediately. Regularly audit your systems for any anomalies and consider implementing additional security measures such as IP packet filtering. Don't wait on this one! You've got this! With a quick update, you'll boost your security and keep the bad guys at bay! 🛡️

The record
Technical detail
CVSS v3.0
9.3 · CRITICAL
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.01726 · 77.4th percentile
Published
2019-01-15T21:00Z
EPSS history
Timeline
  • 15 JAN 21:00Z
    Junos OS: vMX series: Predictable IP ID sequence numbers vulnerability
    cvelistv5