CVE-1999-0513

Digital UNIX - Denial of Service via ICMP Broadcast Messages

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-1999-0513. PoCs published by T. Freak.

AI-analyzed exploit summary This exploit code implements a Smurf attack, a denial-of-service (DoS) technique that floods a target network with ICMP echo replies by spoofing the source address and sending packets to broadcast addresses. It constructs raw ICMP packets with a spoofed source IP and sends them to multiple broadcast addresses to amplify traffic.

Description

ICMP messages to broadcast addresses are allowed, allowing for a Smurf attack that can cause a denial of service.

Exploits (1)

exploitdb WORKING POC VERIFIED
by T. Freak · cdosbsd
https://www.exploit-db.com/exploits/19117

This exploit code implements a Smurf attack, a denial-of-service (DoS) technique that floods a target network with ICMP echo replies by spoofing the source address and sending packets to broadcast addresses. It constructs raw ICMP packets with a spoofed source IP and sends them to multiple broadcast addresses to amplify traffic.

Classification
Working Poc 100%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: Network infrastructure (ICMP broadcast amplification)
No auth needed
Prerequisites: Raw socket permissions · List of broadcast addresses · Target IP address
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References
Third Party Advisory, VDB Entry x_refsource_misc
https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0513

Scores

EPSS 0.7046
EPSS Percentile 99.3%

Details

Status published
Products (32)
digital/unix 3.2g
digital/unix 4.0
digital/unix 4.0a
digital/unix 4.0b
digital/unix 4.0c
digital/unix 4.0d
freebsd/freebsd 1.1.5.1
freebsd/freebsd 2.0.5
freebsd/freebsd 2.1.0
freebsd/freebsd 2.1.5
... and 22 more
Published Jan 05, 1998
Tracked Since Feb 18, 2026