Vulnerabilities > CVE-2015-1030 - Resource Management Errors vulnerability in Privoxy

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

include("compat.inc");

if (description)
{
  script_id(81086);
  script_version("1.7");
  script_cvs_date("Date: 2019/11/25");

  script_cve_id("CVE-2015-1030", "CVE-2015-1031");
  script_bugtraq_id(71991, 71993);

  script_name(english:"Privoxy < 3.0.22 Multiple Vulnerabilities");
  script_summary(english:"Checks the version of Privoxy.");

  script_set_attribute(attribute:"synopsis", value:
"The remote web proxy is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its self-identified version number, the Privoxy installed
on the remote host is a version prior to 3.0.22. It is, therefore,
affected by multiple vulnerabilities:

  - A denial of service vulnerability exists due to a
    memory leak when client connections are rejected when
    the socket limit has been reached. Note that this issue
    only affects version 3.0.21 with IPv6 support, which is
    enabled by default. (CVE-2015-1030)

  - Multiple unspecified use-after-free vulnerabilities
    exist that could lead to arbitrary code execution.
    (CVE-2015-1031)

Note that Nessus has not tested for these issues but has instead
relied only on the application's self-reported version number.");
  script_set_attribute(attribute:"see_also", value:"https://sourceforge.net/p/ijbswa/mailman/message/33089172/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to version 3.0.22 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2015-1031");

  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:"2014/11/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/11/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/01/29");

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

  script_category(ACT_GATHER_INFO);
  script_family(english:"Firewalls");

  script_copyright(english:"This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("privoxy_detect.nasl");
  script_require_keys("www/Privoxy", "Settings/ParanoidReport");
  script_require_ports("Services/www", 8118);

  exit(0);
}

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

if (report_paranoia < 2) audit(AUDIT_PARANOID);

port = get_http_port(default:8118);
app_name = "Privoxy";

install = get_install_from_kb(
  appname      : app_name,
  port         : port,
  exit_on_fail : TRUE
);

version = install["ver"];
if (version == UNKNOWN_VER) audit(AUDIT_UNKNOWN_WEB_SERVER_VER, app_name, port);

install_url = build_url(qs:install["dir"], port:port);
fix = "3.0.22";

# Versions < 3.0.22 are vulnerable
if (ver_compare(ver:version, fix:fix, strict:FALSE) < 0)
{
  if (report_verbosity > 0)
  {
    report =
      '\n  URL               : ' + install_url +
      '\n  Installed version : ' + version +
      '\n  Fixed version     : ' + fix +
      '\n';
    security_hole(port:port, extra:report);
  }
  else security_hole(port);
}
else audit(AUDIT_LISTEN_NOT_VULN, app_name, port, version);

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2018 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
# 
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

include("compat.inc");

if (description)
{
  script_id(88150);
  script_version("2.3");
  script_cvs_date("Date: 2018/11/21 10:46:31");

  script_cve_id("CVE-2015-1030", "CVE-2015-1031", "CVE-2015-1201");

  script_name(english:"FreeBSD : privoxy -- multiple vulnerabilities (89d4ed09-c3d7-11e5-b5fe-002590263bf5)");
  script_summary(english:"Checks for updated package in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote FreeBSD host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Privoxy Developers reports :

Fixed a memory leak when rejecting client connections due to the
socket limit being reached (CID 66382). This affected Privoxy 3.0.21
when compiled with IPv6 support (on most platforms this is the
default).

Fixed an immediate-use-after-free bug (CID 66394) and two additional
unconfirmed use-after-free complaints made by Coverity scan (CID
66391, CID 66376).

MITRE reports :

Privoxy before 3.0.22 allows remote attackers to cause a denial of
service (file descriptor consumption) via unspecified vectors."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=195468"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.privoxy.org/3.0.22/user-manual/whatsnew.html"
  );
  # http://www.openwall.com/lists/oss-security/2015/01/11/1
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.openwall.com/lists/oss-security/2015/01/11/1"
  );
  # https://vuxml.freebsd.org/freebsd/89d4ed09-c3d7-11e5-b5fe-002590263bf5.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?10f3c2ab"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:privoxy");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/01/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/01/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/01/26");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");

  exit(0);
}


include("audit.inc");
include("freebsd_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (pkg_test(save_report:TRUE, pkg:"privoxy<3.0.22")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:pkg_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");