Samba < 3.4.0 Remote Code Execution Vulnerability

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

include("compat.inc");

if (description)
{
  script_id(122058);
  script_version("1.3");
  script_cvs_date("Date: 2019/10/31 15:18:51");

  script_cve_id("CVE-2012-0870");
  script_bugtraq_id(52103);

  script_name(english:"Samba < 3.4.0 Remote Code Execution Vulnerability");
  script_summary(english:"Checks the version of Samba.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Samba server is affected by a remote code execution vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Samba running on the remote host is prior to
3.4.0. It is, therefore, affected by a remote code execution
vulnerability in process.c due to a heap-based buffer overflow.  An 
unauthenticated, remote attacker can exploit this to bypass authentication 
and execute arbitrary commands via Batched / AndX request.

Note that Nessus has not tested for this issue but has instead relied
only on the application's self-reported version number.");
  script_set_attribute(attribute:"see_also", value:"https://www.samba.org/samba/security/CVE-2012-0870.html");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Samba version 3.4.0 or later.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:M/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:R/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:"cvss_score_source", value:"CVE-2012-0870");

  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:"2008/08/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2008/08/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/02/08");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:samba:samba");
  script_end_attributes();

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

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

  script_dependencies("smb_nativelanman.nasl");
  script_require_keys("SMB/NativeLanManager", "SMB/samba", "Settings/ParanoidReport");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("vcf.inc");
include("vcf_extras.inc");

if (report_paranoia < 2) audit(AUDIT_PARANOID);

app = vcf::samba::get_app_info();
vcf::check_granularity(app_info:app, sig_segments:3);

constraints = 
[
  {"fixed_version" : "3.4.0"}
];

vcf::check_version_and_report(app_info:app, constraints:constraints, severity:SECURITY_HOLE, strict:FALSE);