National Cyber-Alert System
Vulnerability Summary for CVE-2002-0510
Original release date:08/12/2002
Last revised:09/05/2008
Source:
US-CERT/NIST
Overview
The UDP implementation in Linux 2.4.x kernels keeps the IP Identification field at 0 for all non-fragmented packets, which could allow remote attackers to determine that a target system is running Linux.
Impact
CVSS Severity (version 2.0 incomplete approximation):
Impact Subscore:
2.9
Exploitability Subscore:
10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Allows unauthorized disclosure of information
Official Statement from Red Hat (03/25/2008)
Red Hat do not consider this to be a security issue and there are many ways that you can identify or fingerprint a Linux machine. Users that wish to block fingerprinting can use various techniques to disguise their operating system, for example see
http://www.infosecwriters.com/text_resources/pdf/nmap.pdf
References to Advisories, Solutions, and Tools
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External Source: BID
Name: 4314
Type: Advisory
External Source: BUGTRAQ
Name: 20020319 Identifying Kernel 2.4.x based Linux machines using UDP
Type: Advisory
External Source: XF
Name: linux-udp-fingerprint(8588)
Type: Advisory
