Vulnerabilities > CVE-2016-3737 - Improper Input Validation vulnerability in Redhat Jboss Operations Network

047910
CVSS 9.0 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
COMPLETE
network
low complexity
redhat
CWE-20
critical
nessus
NVD
Published: 2016-08-02
Updated: 2017-11-03

Summary

The server in Red Hat JBoss Operations Network (JON) before 3.3.6 allows remote attackers to execute arbitrary code via a crafted HTTP request, related to message deserialization.

Vulnerable Configurations

Part Description Count
Application
Redhat
20

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Server Side Include (SSI) Injection
    An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
  • Cross Zone Scripting
    An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
  • Cross Site Scripting through Log Files
    An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.

Nessus

NASL familyMisc.
NASL idJBOSS_ON_DESERIALIZE_CC.NASL
descriptionThe remote Red Hat JBoss Operations Network server is affected by a remote code execution vulnerability due to unsafe deserialize calls of unauthenticated Java objects to the Jython library. An unauthenticated, remote attacker can exploit this, by sending specially crafted Java objects to the HTTP interface, to execute arbitrary code on the target host.
last seen2020-06-01
modified2020-06-02
plugin id91487
published2016-06-06
reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/91487
titleRed Hat JBoss Operations Network Java Object Deserialization RCE
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(91487);
  script_version("1.11");
  script_cvs_date("Date: 2019/11/19");

  script_cve_id("CVE-2016-3737");
  script_bugtraq_id(90430);
  script_xref(name:"TRA", value:"TRA-2016-22");

  script_name(english:"Red Hat JBoss Operations Network Java Object Deserialization RCE");
  script_summary(english:"Sends an unexpected Java object to the server.");

  script_set_attribute(attribute:"synopsis", value:
"The remote JBoss Operations Network server is affected by a remote
code execution vulnerability");
  script_set_attribute(attribute:"description", value:
"The remote Red Hat JBoss Operations Network server is affected by a
remote code execution vulnerability due to unsafe deserialize calls of
unauthenticated Java objects to the Jython library. An
unauthenticated, remote attacker can exploit this, by sending
specially crafted Java objects to the HTTP interface, to execute
arbitrary code on the target host.");
  script_set_attribute(attribute:"see_also", value:"https://www.tenable.com/security/research/tra-2016-22");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2016-3737");
  script_set_attribute(attribute:"solution", value:
"Red Hat has released JBoss Operations Network 3.3 Update 06 to address
this issue; however, Tenable Research has confirmed that the update
did not resolve the issue. To mitigate this issue, users should enable
agent authentication.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-3737");

  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:"2016/05/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/06/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/06/06");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:redhat:jboss_operations_network");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("jboss_on_detect.nbin");
  script_require_keys("installed_sw/JBoss Operations Network");
  script_require_ports("Services/www", 7080, 7443);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("webapp_func.inc");
include("http.inc");

appname = 'JBoss Operations Network';
get_install_count(app_name:appname, exit_if_zero:TRUE);
port = get_http_port(default:7080);
install = get_single_install(app_name:appname, port:port);

# This blob is (eventually) a PyFunction that, upon deserialization, will simply execute
# the python byte code "return". Technically speaking, we could do much more than that
# but we only have builtins available to us (so r/w files), but it is far easier to determine
# that the remote server is vulnerable via the class cast exception that occurs on success.
crafted_object = 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# post our crafted object to the server
path = "/jboss-remoting-servlet-invoker/ServerInvokerServlet/?generalizeSocketException=true";
resp = http_send_recv3(
  method:"POST",
  item:path,
  data:crafted_object,
  add_headers:make_array("Content-Type", "application/octet-stream", "JBoss-Remoting-Version", "22"),
  port:port,
  exit_on_fail:TRUE);

if (isnull(resp) || len(resp) != 3) audit(AUDIT_RESP_BAD, port);
if ("java.lang.ClassCastException: org.python.core.PySingleton cannot be cast to" >!< resp[2])
  audit(AUDIT_INST_VER_NOT_VULN, appname, install["version"]);

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);

Redhat

advisories
rhsa
idRHSA-2016:1519

References