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- #
- # (C) Tenable Network Security
- #
- # See the Nessus Scripts License for details
- #
- #
-
- if(description)
- {
- script_id(11625);
- script_bugtraq_id(7022);
-
- script_version("$Revision: 1.3 $");
-
- name["english"] = "DrWeb Folder Name Overflow";
-
- script_name(english:name["english"]);
-
- desc["english"] = "
- The remote host is running DrWeb - an antivirus.
-
- There is a flaw in the remote version of Dr.Web which may make it crash
- when scanning files whose name is excessively long.
-
- An attacker may use this flaw to execute arbitrary code on this host.
- To exploit it, an attacker would need to send a file to the remote host
- and have it scanned by this software.
-
- Solution : Upgrade to version 4.29b or newer
- Risk factor : High";
-
-
-
- script_description(english:desc["english"]);
-
- summary["english"] = "Determines the presence of Dr.Web";
-
- script_summary(english:summary["english"]);
-
- script_category(ACT_GATHER_INFO);
-
- script_copyright(english:"This script is Copyright (C) 2003 Tenable Network Security");
- family["english"] = "Windows";
- script_family(english:family["english"]);
-
- script_dependencies("netbios_name_get.nasl",
- "smb_login.nasl","smb_registry_access.nasl");
- script_require_keys("SMB/name", "SMB/login", "SMB/password",
- "SMB/WindowsVersion",
- "SMB/registry_access");
-
- script_require_ports(139, 445);
- exit(0);
- }
-
-
- include("smb_nt.inc");
-
-
-
- rootfile = registry_get_sz(key:"SOFTWARE\DialogueScience\DrWeb", item:"Path");
- if(!rootfile)
- {
- exit(0);
- }
- else
- {
- share = ereg_replace(pattern:"([A-Z]):.*", replace:"\1$", string:rootfile);
- exe = ereg_replace(pattern:"[A-Z]:(.*)", replace:"\1", string:rootfile);
- }
-
-
-
-
- name = kb_smb_name();
- login = kb_smb_login();
- pass = kb_smb_password();
- domain = kb_smb_domain();
- port = kb_smb_transport();
- if(!port) port = 139;
-
-
- if(!get_port_state(port))exit(0);
-
- soc = open_sock_tcp(port);
- if(!soc)exit(0);
-
-
-
- r = smb_session_request(soc:soc, remote:name);
- if(!r)exit(0);
-
- prot = smb_neg_prot(soc:soc);
- if(!prot)exit(0);
-
- r = smb_session_setup(soc:soc, login:login, password:pass, domain:domain, prot:prot);
- if(!r)exit(0);
-
- uid = session_extract_uid(reply:r);
-
-
-
- r = smb_tconx(soc:soc, name:name, uid:uid, share:share);
- tid = tconx_extract_tid(reply:r);
- if(!tid)exit(0);
-
- fid = OpenAndX(socket:soc, uid:uid, tid:tid, file:exe);
- if(fid != 0)
- {
- fsize = smb_get_file_size(socket:soc, uid:uid, tid:tid, fid:fid);
-
- off = fsize - 16384;
- data = ReadAndX(socket:soc, uid:uid, tid:tid, fid:fid, count:16384, off:off);
- data = str_replace(find:raw_string(0), replace:"", string:data);
-
- version = strstr(data, "ProductVersion");
- if(!version)exit(0);
- for(i=strlen("ProductVersion");i<strlen(version);i++)
- {
- if((ord(version[i]) < ord("0") ||
- ord(version[i]) > ord("9")) &&
- version[i] != ".")break;
- else
- v += version[i];
- }
- if("4.29" >< v)
- v = v + version[i];
-
- set_kb_item(name:"DrWeb/Version", value:v);
-
- if(ereg(pattern:"([123]\..*|4\.([0-9][^0-9]|1[0-9]|2[0-8]|29a?))", string:v))
- security_warning(port);
- }
-