Vulnerabilities > CVE-2015-6548 - SQL Injection vulnerability in Symantec web Gateway

047910
CVSS 5.8 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
MULTIPLE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
low complexity
symantec
CWE-89
nessus

Summary

Multiple SQL injection vulnerabilities in a PHP script in the management console on Symantec Web Gateway (SWG) appliances with software before 5.2.2 DB 5.0.0.1277 allow remote authenticated users to execute arbitrary SQL commands via unspecified vectors.

Common Attack Pattern Enumeration and Classification (CAPEC)

  • 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.
  • Object Relational Mapping Injection
    An attacker leverages a weakness present in the database access layer code generated with an Object Relational Mapping (ORM) tool or a weakness in the way that a developer used a persistence framework to inject his or her own SQL commands to be executed against the underlying database. The attack here is similar to plain SQL injection, except that the application does not use JDBC to directly talk to the database, but instead it uses a data access layer generated by an ORM tool or framework (e.g. Hibernate). While most of the time code generated by an ORM tool contains safe access methods that are immune to SQL injection, sometimes either due to some weakness in the generated code or due to the fact that the developer failed to use the generated access methods properly, SQL injection is still possible.
  • SQL Injection through SOAP Parameter Tampering
    An attacker modifies the parameters of the SOAP message that is sent from the service consumer to the service provider to initiate a SQL injection attack. On the service provider side, the SOAP message is parsed and parameters are not properly validated before being used to access a database in a way that does not use parameter binding, thus enabling the attacker to control the structure of the executed SQL query. This pattern describes a SQL injection attack with the delivery mechanism being a SOAP message.
  • Expanding Control over the Operating System from the Database
    An attacker is able to leverage access gained to the database to read / write data to the file system, compromise the operating system, create a tunnel for accessing the host machine, and use this access to potentially attack other machines on the same network as the database machine. Traditionally SQL injections attacks are viewed as a way to gain unauthorized read access to the data stored in the database, modify the data in the database, delete the data, etc. However, almost every data base management system (DBMS) system includes facilities that if compromised allow an attacker complete access to the file system, operating system, and full access to the host running the database. The attacker can then use this privileged access to launch subsequent attacks. These facilities include dropping into a command shell, creating user defined functions that can call system level libraries present on the host machine, stored procedures, etc.
  • SQL Injection
    This attack exploits target software that constructs SQL statements based on user input. An attacker crafts input strings so that when the target software constructs SQL statements based on the input, the resulting SQL statement performs actions other than those the application intended. SQL Injection results from failure of the application to appropriately validate input. When specially crafted user-controlled input consisting of SQL syntax is used without proper validation as part of SQL queries, it is possible to glean information from the database in ways not envisaged during application design. Depending upon the database and the design of the application, it may also be possible to leverage injection to have the database execute system-related commands of the attackers' choice. SQL Injection enables an attacker to talk directly to the database, thus bypassing the application completely. Successful injection can cause information disclosure as well as ability to add or modify data in the database. In order to successfully inject SQL and retrieve information from a database, an attacker:

Nessus

NASL familyCGI abuses
NASL idSYMANTEC_WEB_GATEWAY_SYM1-009.NASL
descriptionAccording to its self-reported version number, the remote web server is hosting a version of Symantec Web Gateway with a database component prior to version 5.0.0.1277. It is, therefore, affected by multiple vulnerabilities : - A flaw exists that allows the bypassing of access redirect restrictions. An authenticated, remote attacker can exploit this to inject commands with elevated privileges. (CVE-2015-5690) - A reflected cross-site scripting vulnerability exists in the management console due to improper validation of user-supplied input. An attacker can exploit this to execute arbitrary script in the user
last seen2020-06-01
modified2020-06-02
plugin id86150
published2015-09-25
reporterThis script is Copyright (C) 2015-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/86150
titleSymantec Web Gateway Database < 5.0.0.1277 Multiple Vulnerabilities (SYM15-009) (credentialed check)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(86150);
  script_version("1.8");
  script_cvs_date("Date: 2018/11/15 20:50:19");

  script_cve_id(
    "CVE-2015-5690",
    "CVE-2015-5691",
    "CVE-2015-5692",
    "CVE-2015-5693",
    "CVE-2015-6547",
    "CVE-2015-6548");
  script_bugtraq_id(
    76725,
    76726,
    76728,
    76729,
    76730,
    76731
  );

  script_name(english:"Symantec Web Gateway Database < 5.0.0.1277 Multiple Vulnerabilities (SYM15-009) (credentialed check)");
  script_summary(english:"Checks the SWG version.");

  script_set_attribute(attribute:"synopsis", value:
"A web security application hosted on the remote web server is affected
by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version number, the remote web server
is hosting a version of Symantec Web Gateway with a database component
prior to version 5.0.0.1277. It is, therefore, affected by multiple
vulnerabilities :

  - A flaw exists that allows the bypassing of access
    redirect restrictions. An authenticated, remote attacker
    can exploit this to inject commands with elevated
    privileges. (CVE-2015-5690)

  - A reflected cross-site scripting vulnerability exists
    in the management console due to improper validation of
    user-supplied input. An attacker can exploit this to
    execute arbitrary script in the user's browser session.
    (CVE-2015-5691)

  - A flaw exists in the admin_messages.php script due to
    improperly sanitizing user-uploaded files. An attacker
    can exploit this to execute arbitrary PHP code via a
    crafted file. (CVE-2015-5692)

  - A flaw exists related to Traffic Capture EoP due to the
    Hostname field in the administrator configuration
    facility not properly sanitizing user-supplied input
    before writing it to the '/etc/sysconfig/network' file,
    which is processed during startup and shutdown. An
    authenticated, remote attacker can exploit this, via a
    crafted hostname, to inject commands which are executed
    with root privileges. (CVE-2015-5693)

  - An unspecified flaw exists exists related to the Boot
    Time EoP. An authenticated, remote attacker can exploit
    this to inject arbitrary commands. (CVE-2015-5647)

  - A flaw exists in the edit_alert.php script due to not
    properly sanitizing user-supplied input to the 'alertid'
    and 'applianceid' GET parameters. An authenticated,
    remote attacker can exploit this to inject or manipulate
    SQL queries, resulting in the disclosure of arbitrary
    data. (CVE-2015-6548)");
  # https://support.symantec.com/en_US/article.SYMSA1332.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?30cc4ace");
  script_set_attribute(attribute:"see_also", value:"https://www.zerodayinitiative.com/advisories/ZDI-15-443/");
  script_set_attribute(attribute:"see_also", value:"https://www.zerodayinitiative.com/advisories/ZDI-15-444/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Symantec Web Gateway Database to 5.0.0.1277 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/09/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/09/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/09/25");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:symantec:web_gateway");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2015-2018 Tenable Network Security, Inc.");

  script_dependencies("symantec_web_gateway_detect.nasl");
  script_require_keys("installed_sw/symantec_web_gateway");
  script_require_ports("Services/www", 443);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("url_func.inc");
include("install_func.inc");

port = get_http_port(default:443, php:TRUE);
app = 'Symantec Web Gateway';

install = get_single_install(
  app_name : 'symantec_web_gateway',
  port     : port,
  exit_if_unknown_ver : TRUE
);

dir = install['path'];
ver = install['version'];
url = build_url(port:port, qs:dir);

# 5.2.3 is not released, but this is for future-proofing.
fix = '5.2.3';

if (ver_compare(ver:ver, fix:fix, strict:FALSE) >= 0)
{
  audit(AUDIT_WEB_APP_NOT_AFFECTED, app, url, ver);
}


# We don't want to require these keys in the case of versions > 5.2.2
user = get_kb_item_or_exit("http/login");
pass = get_kb_item_or_exit("http/password");

post_data =
"USERNAME="+user+"&PASSWORD="+pass+"&loginBtn=Login";

# Logging in to get the DB version
res = http_send_recv3(
    method      : "POST",
    item        : "/spywall/login.php",
    data        : post_data,
    port        : port,
    follow_redirect: 1,
    content_type: 'application/x-www-form-urlencoded',
    exit_on_fail: TRUE
);

# If the login fails, the server returns a 200, which isn't helpful. We
# need to match content.
if(res[2] !~ "<title>Symantec Web Gateway.*Executive Summary</title>")
  exit(0, "Login for " + app + " failed.");

res2 = http_send_recv3(
    method      : "GET",
    item        : "/spywall/executive_summary.php",
    port        : port,
    exit_on_fail: TRUE
);

db_fix = '5.0.0.1277';
db_ver = NULL;

# This string floats in a large blob of text, anchoring is not going
# to provide any great utility
if("Current Database Version" >< res2[2])
{
  matches = eregmatch(pattern:"Current Database Version: ([0-9.]+);",
                      string: res2[2]);
  db_ver = matches[1];
  if (empty_or_null(db_ver))
    audit(AUDIT_UNKNOWN_WEB_APP_VER, app + " Database", url);
}
else
  audit(AUDIT_UNKNOWN_WEB_APP_VER, app + " Database", url);

report = NULL;

if (ver_compare(ver:db_ver, fix:db_fix, strict:FALSE) < 0)
{
  if (report_verbosity > 0)
  {
     report =
       '\n  URL                           : ' + url +
       '\n  Installed application version : ' + ver +
       '\n  Installed database version    : ' + db_ver +
       '\n  Fixed database version        : ' + db_fix + '\n';
  }

  security_hole(port:port, extra:report);
  exit(0);
}
else
  audit(AUDIT_WEB_APP_NOT_AFFECTED, app + " Database", url, db_ver);