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- #
- # This script was written by David Maciejak <david dot maciejak at kyxar dot fr>
- # based on work from
- # (C) Tenable Network Security
- #
- # Ref: iDEFENSE 10.11.04
- #
- # This script is released under the GNU GPL v2
- #
-
- if(description)
- {
- script_id(15463);
- script_bugtraq_id(11385);
- script_cve_id("CAN-2004-0918");
- script_version ("$Revision: 1.4 $");
- name["english"] = "Squid remote denial of service";
-
- script_name(english:name["english"]);
-
- desc["english"] = "
- The remote squid caching proxy, according to its version number, may be
- vulnerable to a remote denial of service.
-
- This flaw is caused due to an input validation error in the SNMP module.
-
- An attacker can exploit this flaw to crash the server with a specially
- crafted UDP packet.
-
- *** Nessus reports this vulnerability using only
- *** information that was gathered, so this might
- *** be a false positive.
-
- Solution : Upgrade to squid 2.5.STABLE7 or newer
- Risk factor : High";
-
-
- script_description(english:desc["english"]);
-
- summary["english"] = "Determines squid version";
- script_summary(english:summary["english"]);
-
- script_category(ACT_GATHER_INFO);
-
- script_copyright(english:"This script is Copyright (C) 2004 David Maciejak",
- francais:"Ce script est Copyright (C) 2004 David Maciejak");
-
- family["english"] = "Denial of Service";
-
- script_family(english:family["english"]);
- script_dependencie("find_service.nes");
- if ( defined_func("bn_random") )
- script_dependencie("redhat-RHSA-2004-591.nasl");
- script_require_ports("Services/http_proxy",3128, 8080);
- exit(0);
- }
-
- include("http_func.inc");
- include("http_keepalive.inc");
-
- if ( get_kb_item("CAN-2004-0918") ) exit(0);
-
- port = get_kb_item("Services/http_proxy");
- if(!port)
- {
- if(get_port_state(3128))
- {
- port = 3128;
- }
- else port = 8080;
- }
-
- if(get_port_state(port))
- {
- soc = open_sock_tcp(port);
- if(soc)
- {
- req = http_get(item:"/", port:port);
- res = http_keepalive_send_recv(data:req, port:port);
- if(egrep(pattern:"Squid/2\.([0-4]|5\.STABLE[0-6])", string:res))
- security_hole(port);
- }
- }
-