Firefox < 19.0.2 nsHTMLEditor Use-After-Free (Mac OS X)

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(65129);
  script_version("1.11");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/03");

  script_cve_id("CVE-2013-0787");
  script_bugtraq_id(58391);

  script_name(english:"Firefox < 19.0.2 nsHTMLEditor Use-After-Free (Mac OS X)");
  script_summary(english:"Checks version of Firefox");

  script_set_attribute(
    attribute:"synopsis",
    value:
"The remote Mac OS X host contains a web browser that is potentially
affected by a use-after-free vulnerability."
  );
  script_set_attribute(
    attribute:"description",
    value:
"The installed version of Firefox is earlier than 19.0.2 and thus, is
potentially affected by a use-after-free vulnerability. 

An error exists in the HTML editor (nsHTMLEditor) related to content
script and the calling of the function 'document.execCommand' while
internal editor operations are running.  The previously freed memory can
be dereferenced and could lead to arbitrary code execution."
  );
  script_set_attribute(attribute:"see_also", value:"http://www.securityfocus.com/archive/1/526050/30/0/threaded");
  script_set_attribute(attribute:"see_also", value:"http://www.zerodayinitiative.com/advisories/ZDI-13-090/");
  script_set_attribute(attribute:"see_also", value:"https://www.mozilla.org/en-US/security/advisories/mfsa2013-29/");
  script_set_attribute(attribute:"solution", value:"Upgrade to Firefox 19.0.2 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/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 known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/03/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/03/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/03/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:mozilla:firefox");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"MacOS X Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2013-2026 Tenable Network Security, Inc.");

  script_dependencies("macosx_firefox_installed.nasl");
  script_require_keys("MacOSX/Mozilla Firefox/Installed");

  exit(0);
}

include("mozilla_version.inc");
kb_base = "MacOSX/Mozilla Firefox";
get_kb_item_or_exit(kb_base+"/Installed");

version = get_kb_item_or_exit(kb_base+"/Version", exit_code:1);
path = get_kb_item_or_exit(kb_base+"/Path", exit_code:1);

if (get_kb_item(kb_base + '/is_esr')) exit(0, 'The Mozilla Firefox installation is in the ESR branch.');

mozilla_check_version(product:'firefox', version:version, path:path, esr:FALSE, fix:'19.0.2', severity:SECURITY_HOLE);