CVE-1999-1024

ip_print procedure in Tcpdump 3.4a allows remote attackers to cause a denial of service via a packet with a zero length header, which causes an infinite loop and core dump when tcpdump prints the packet.

What this means for your business

It affects Lbl Tcpdump. It matters if your company, or a supplier that handles your data, runs it.
Code showing how to exploit it has been published, but real attacks have not been confirmed.
An attacker can use it remotely, over a network.

What to do

1Check whether your company or your suppliers run Lbl Tcpdump, and which version. The affected versions are listed further down this page.
2If you do, apply the vendor's fix. A patch or vendor advisory has been published.

Not sure if your company is exposed?

Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.

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Scoring

CVSS: 7.5 (v2.0)
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Assigned by: cve@mitre.org

Dates

Published: 2001-11-28
Last modified: 2026-09-25
Sources: NVD

Affected products

Lbl Tcpdump3.4

As listed in the NVD configuration data. Not a statement about your estate.