CUPS Incomplete SSL Negotiation Remote DoS

This script is Copyright (C) 2007-2014 Tenable Network Security, Inc.


Synopsis :

The remote printer service is prone to a denial of service attack.

Description :

The version of CUPS installed on the remote host suffers from a design
flaw involving SSL auto-detection. By establishing a connection to a
port on which the application attempts to auto-detect SSL and sending
a single character, an unauthenticated, remote attacker can leverage
this flaw to cause subsequent connections to hang until the first
connection is closed.

See also :

http://www.cups.org/str.php?L2091+P0+S-2+C0+I0+E0+Q
http://www.cups.org/newsgroups.php?s25+gcups.announce+v30+T0
http://lists.apple.com/archives/security-announce/2007/Mar/msg00002.html
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=232243

Solution :

Upgrade to CUPS version 1.2.7 or later.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)
CVSS Temporal Score : 4.1
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Misc.

Nessus Plugin ID: 24901 (cups_ssl_negotiation_dos.nasl)

Bugtraq ID: 23127

CVE ID: CVE-2007-0720