CVE-1999-0599

A network intrusion detection system (IDS) does not properly handle packets with improper sequence numbers

published February 4, 2000

CVSS
—
EPSS
2%
Percentile
79.4
In the wild
Unconfirmed
What it is

⚠️ This vulnerability in a network intrusion detection system (IDS) gets tripped up by packets with misordered sequence numbers – it’s like a traffic cop confused by cars that don’t follow the usual lanes! 🚥 Think of it as a construction team trying to assemble a building with bricks that arrive in the wrong order. If they can’t recognize the pattern, the whole structure could be compromised, leading to potential gaps in security! If an attacker sends improperly sequenced packets, the IDS may fail to detect suspicious activity, allowing malicious traffic to slip through unnoticed. This could lead to undetected data breaches or further exploitation of the network!

Put simply

Think of it as a construction team trying to assemble a building with bricks that arrive in the wrong order. If they can’t recognize the pattern, the whole structure could be compromised, leading to potential gaps in security! This vulnerability arises when the IDS does not appropriately handle packets that arrive out of sequence, failing to identify and respond to potential threats in the network traffic appropriately.

What to do

If an attacker sends improperly sequenced packets, the IDS may fail to detect suspicious activity, allowing malicious traffic to slip through unnoticed. This could lead to undetected data breaches or further exploitation of the network! To mitigate this issue, ensure your IDS is updated to the latest version that addresses proper packet sequencing. Regularly review and test your intrusion detection policies to better handle abnormal traffic patterns. You've got this! With a little diligence and some updates, you'll have your defenses strong and ready to roll! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01891 · 79.4th percentile
Published
2000-02-04T05:00Z
EPSS history
Timeline
  • 04 FEB 05:00Z
    A network intrusion detection system (IDS) does not properly handle packets with improper sequence numbers
    cvelistv5