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- #
- # This script was written by Renaud Deraison <deraison@cvs.nessus.org>
- #
- # See the Nessus Scripts License for details
- #
- # Script audit and contributions from Carmichael Security <http://www.carmichaelsecurity.com>
- # Erik Anderson <eanders@carmichaelsecurity.com>
- # Added BugtraqID
- # Should also cover BugtraqID: 4560, BugtraqID: 4241/(CVE-2002-0083)
- #
- # If the plugin is successful, it will issue a security_hole(). Should
- # it attempt to determine if the remote host is a kerberos client and
- # issue a security_warning() if it's not ?
- #
-
- if(description)
- {
- script_id(10802);
- script_bugtraq_id(3560, 4241, 4560);
- script_version ("$Revision: 1.16 $");
- script_cve_id("CVE-2002-0083");
-
- name["english"] = "OpenSSH < 3.0.1";
- script_name(english:name["english"]);
-
- desc["english"] = "
- You are running a version of OpenSSH which is older than 3.0.1.
-
- Versions older than 3.0.1 are vulnerable to a flaw in which
- an attacker may authenticate, provided that Kerberos V support
- has been enabled (which is not the case by default).
- It is also vulnerable as an excessive memory clearing bug,
- believed to be unexploitable.
-
- *** You may ignore this warning if this host is not using
- *** Kerberos V
-
- Solution : Upgrade to OpenSSH 3.0.1
-
- Risk factor : Low (if you are not using Kerberos) / High (if kerberos is enabled)";
-
-
-
- script_description(english:desc["english"]);
-
- summary["english"] = "Checks for the remote SSH version";
- summary["francais"] = "VΘrifie la version de SSH";
- script_summary(english:summary["english"], francais:summary["francais"]);
-
- script_category(ACT_GATHER_INFO);
-
-
- script_copyright(english:"This script is Copyright (C) 2001 Renaud Deraison",
- francais:"Ce script est Copyright (C) 2001 Renaud Deraison");
- family["english"] = "Gain a shell remotely";
- family["francais"] = "Obtenir un shell α distance";
- script_family(english:family["english"], francais:family["francais"]);
- script_dependencie("ssh_detect.nasl");
- script_require_ports("Services/ssh", 22);
- exit(0);
- }
-
- #
- # The script code starts here
- #
-
- include("backport.inc");
-
- port = get_kb_item("Services/ssh");
- if(!port)port = 22;
-
- banner = get_kb_item("SSH/banner/" + port );
- if ( ! banner ) exit(0);
-
- banner = tolower(get_backport_banner(banner:banner));
-
- if("openssh" >< banner)
- {
- if(ereg(pattern:".*openssh[-_]((1\..*)|(2\..*)|(3\.0[^\.]))[^0-9]*", string:banner))
- security_hole(port);
- }
-