NetIQ Sentinel 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(90602);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");
  script_xref(name:"CERT", value:"576313");

  script_name(english:"NetIQ Sentinel Java Object Deserialization RCE");

  script_set_attribute(attribute:"synopsis", value:
"The remote NetIQ Sentinel server is affected by a remote code 
execution vulnerability");
  script_set_attribute(attribute:"description", value:
"The remote Novell NetIQ Sentinel 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 specially crafted serialized Java object via the RMI
interface, to execute arbitrary code with the privileges of the
application.");
  # https://download.novell.com/Download?buildid=ZEMvbiAk5k8~&donotredirect=true
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3cd78ca8");
  # 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:
"Upgrade to NetIQ Sentinel version 7.4.1 or later. Alternatively, 
contact the vendor for a workaround.");
  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_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/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:"patch_publication_date", value:"2016/03/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/04/20");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:netiq:sentinel");
  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) 2016-2022 Tenable Network Security, Inc.");

  script_dependencies("netiq_sentinel_detect.nbin", "rmiregistry_detect.nasl");
  script_require_keys("installed_sw/NetIQ Sentinel");
  script_require_ports("Services/rmi_registry");

  exit(0);
}

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

appname = "NetIQ Sentinel";
get_install_count(app_name:appname, exit_if_zero:TRUE);
port = get_service(svc:"rmi_registry", ipproto:"tcp", exit_on_fail:1);
soc = rmi_connect(port:port);

# Due to the nature of this exploit, we can't see the result
# of the commands we execute. However, successful execution of
# our command will always result in a specific class cast exception
# being sent back to us. This object executes the command
# ls /tmp/ and we look for the failed cast to verify it executed.
request = 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send(socket:soc, data:request);
res = recv(socket:soc, length:0x300, min:0x200);
close(soc);

if (isnull(res) || "Integer cannot be cast to java.util.Set" >!< res) audit(AUDIT_INST_VER_NOT_VULN, appname);

report =
  '\nNessus was able to exploit a Java deserialization vulnerability by' +
  '\nsending a crafted Java object.' +
  '\n';
security_report_v4(port:port, severity:SECURITY_HOLE, extra:report);