CVE-1999-0683

Gauntlet Firewall - Denial of Service via Malformed ICMP Packet

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-1999-0683. PoCs published by Mike Frantzen.

AI-analyzed exploit summary This exploit targets a denial-of-service vulnerability in Gauntlet Firewall 5.0 by sending a malformed ICMP Parameter Problem packet with an encapsulated IP packet containing a random protocol field and IP options. The firewall hangs while searching for the packet in its transparency tables.

Description

Denial of service in Gauntlet Firewall via a malformed ICMP packet.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Mike Frantzen · cdoshardware
https://www.exploit-db.com/exploits/19441

This exploit targets a denial-of-service vulnerability in Gauntlet Firewall 5.0 by sending a malformed ICMP Parameter Problem packet with an encapsulated IP packet containing a random protocol field and IP options. The firewall hangs while searching for the packet in its transparency tables.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: Gauntlet Firewall 5.0
No auth needed
Prerequisites: Libnet library · Raw socket permissions · Network access to a target behind the firewall
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb
http://www.osvdb.org/1029
Exploit, Patch, Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/556

Scores

EPSS 0.0236
EPSS Percentile 81.6%

Details

Status published
Products (1)
network_associates/gauntlet_firewall 5.0
Published Jul 30, 1999
Tracked Since Feb 18, 2026