Bug 176187

Summary:	Bug in the Nmap first generation OS detection engine
Product:	Gentoo Linux	Reporter:	fireboot <moncef.mechri>
Component:	Current packages	Assignee:	Michal Januszewski (RETIRED) <spock>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	High
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	http://insecure.org/nmap/changelog.html
Whiteboard:
Package list:		Runtime testing required:	---

Description fireboot 2007-04-26 23:50:32 UTC

There is a important bug in the latest Nmap stable version (v 4.20) : Some debugging lines were left on the Nmap source code, which force the first generation OS detection engine ( -O and -O1 options ) to mark all hosts as potentially usable as zombie host : the bug forced TCP sequence prediction system to the value 0, so the host was always notified as "trivial joke"

This bug was fixed since Nmap v.4.21-alpha2 


Reproducible: Always

Steps to Reproduce:

Comment 1 Michal Januszewski (RETIRED) gentoo-dev

2007-05-06 15:18:25 UTC

Fixed in CVS, thanks for reporting the problem.