Echo/Chargen UDP Packet Storm denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability was found in Echo and Chargen (affected version unknown). It has been declared as critical. Affected by this vulnerability is an unknown part of the component UDP Packet Handler. The manipulation with an unknown input leads to a denial of service vulnerability (Storm). The CWE definition for the vulnerability is CWE-404. As an impact it is known to affect availability. The summary by CVE is:

echo and chargen or other combinations of udp services can be used in tandem to flood the server a.k.a. udp bomb or udp packet storm.

The weakness was presented 02/08/1996 (Website). It is possible to read the advisory at This vulnerability is known as CVE-1999-0103. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/05/2019). The attack technique deployed by this issue is T1499 according to MITRE ATT&CK. Due to its background and reception, this vulnerability has a historic impact.

It is declared as highly functional. The vulnerability scanner Nessus provides a plugin with the ID 10198 (Quote of the Day (QOTD) Service Detection), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Service detection, running in the context remote and relying on port 17.

The best possible mitigation is suggested to be disabling the affected component. Attack attempts may be identified with Snort ID 271.

The vulnerability is also documented in the databases at X-Force (8566), Vulnerability Center (SBV-211) and Tenable (10198).



CPE 2.3infoedit

CPE 2.2infoedit


VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍



VulDB Base Score: 🔍
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NVD Base Score: 🔍


Name: Storm
Class: Denial of service / Storm
CWE: CWE-404
ATT&CK: T1499

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 10198
Nessus Name: Quote of the Day (QOTD) Service Detection
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 10043
OpenVAS Name: Chargen
OpenVAS File: 🔍
OpenVAS Family: 🔍

MetaSploit ID: chargen_probe.rb
MetaSploit Name: Chargen Probe Utility
MetaSploit File: 🔍

Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
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Remediation: 🔍


Recommended: Disable
Status: 🔍

0-Day Time: 🔍
Snort ID: 271
Snort Message: SERVER-OTHER UDP echo+chargen bomb
Snort Class: 🔍
McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍


02/08/1996 🔍
02/08/1996 +0 days 🔍
02/08/1996 +0 days 🔍
11/30/1999 +1391 days 🔍
10/23/2002 +1058 days 🔍
06/17/2014 +4255 days 🔍
05/31/2017 +1079 days 🔍
05/05/2019 +704 days 🔍


Status: Not defined

CVE: CVE-1999-0103 (🔍)
X-Force: 8566
Vulnerability Center: 211 - UDP Bomb Using Echo, Chargen and Other UDP Services, Medium

scip Labs:


Created: 06/17/2014 04:50 PM
Updated: 05/05/2019 04:12 PM
Changes: (2) source_mcafee_ips_id source_mcafee_ips_version
Complete: 🔍


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