leafnode Cross-Posted Article Group Name Prefix DoS

This script is Copyright (C) 2009-2011 Tenable Network Security, Inc.

Synopsis :

The remote NNTP server is vulnerable to a denial of service attack.

Description :

According to its version number, the remote Leafnode NNTP server is
vulnerable to a denial of service attack. Specifically, it may go
into an infinite loop with 100% CPU use when an article that has been
crossposted to several groups, one of which is the prefix of another,
and when this article is then requested by its Message-ID.

Note that Nessus did not actually test for the flaw but instead has
relied on the version in Leafnode's banner so this may be a false

See also :


Solution :

Upgrade to 1.9.48 or later.

Risk factor :

Medium / CVSS Base Score : 5.0
CVSS Temporal Score : 4.3
Public Exploit Available : true

Family: Misc.

Nessus Plugin ID: 42259 (leafnode_1_9_29.nasl)

Bugtraq ID: 6490

CVE ID: CVE-2002-1661

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