Vulnerabilities > CVE-2012-5976 - Buffer Errors vulnerability in Digium Asterisk

#
# (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(63379);
  script_version("1.10");
  script_cvs_date("Date: 2018/12/19 13:21:18");

  script_cve_id("CVE-2012-5976", "CVE-2012-5977");

  script_name(english:"FreeBSD : asterisk -- multiple vulnerabilities (f7c87a8a-55d5-11e2-a255-c8600054b392)");
  script_summary(english:"Checks for updated packages in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote FreeBSD host is missing one or more security-related
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Asterisk project reports :

Crashes due to large stack allocations when using TCP

Denial of Service Through Exploitation of Device State Caching"
  );
  # http://downloads.digium.com/pub/security/AST-2012-014.html
  script_set_attribute(
    attribute:"see_also",
    value:"https://downloads.digium.com/pub/security/AST-2012-014.html"
  );
  # http://downloads.digium.com/pub/security/AST-2012-015.html
  script_set_attribute(
    attribute:"see_also",
    value:"https://downloads.digium.com/pub/security/AST-2012-015.html"
  );
  # https://www.asterisk.org/security
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.asterisk.org/downloads/security-advisories"
  );
  # https://vuxml.freebsd.org/freebsd/f7c87a8a-55d5-11e2-a255-c8600054b392.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?ec84b9e8"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:asterisk10");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:asterisk11");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:asterisk18");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/01/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/01/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/01/04");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2018 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:"asterisk11>11.*<11.1.2")) flag++;
if (pkg_test(save_report:TRUE, pkg:"asterisk10>10.*<10.11.1")) flag++;
if (pkg_test(save_report:TRUE, pkg:"asterisk18>1.8.*<1.8.19.1")) flag++;

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

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

include("compat.inc");

if (description)
{
  script_id(64717);
  script_version("1.11");
  script_cvs_date("Date: 2019/12/04");

  script_cve_id("CVE-2012-5976", "CVE-2012-5977");
  script_bugtraq_id(57105, 57106);

  script_name(english:"Asterisk Multiple Vulnerabilities (AST-2012-014 / AST-2012-015)");
  script_summary(english:"Checks version in SIP banner");

  script_set_attribute(attribute:"synopsis", value:
"A telephony application running on the remote host is affected by
multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to the version in its SIP banner, the version of Asterisk
running on the remote host is potentially affected by the following
vulnerabilities :

 - A stack-based buffer overflow error exists related to
   SIP, HTTP and XMPP handling over TCP. Note that in the
   case of 'Certified Asterisk', SIP is not affected.
   Further note that in the case of XMPP, an attacker must
   establish an authenticated session first. (CVE-2012-5976)

 - An error exists related to device state cache and
   anonymous calls that could allow system resources to be
   exhausted. Note this vulnerability only affects systems
   configured to allow anonymous calls. (CVE-2012-5977)");
  script_set_attribute(attribute:"see_also", value:"http://downloads.asterisk.org/pub/security/AST-2012-014.html");
  script_set_attribute(attribute:"see_also", value:"http://downloads.asterisk.org/pub/security/AST-2012-015.html");
  script_set_attribute(attribute:"see_also", value:"http://blog.exodusintel.com/2013/01/07/who-was-phone/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Asterisk 1.8.19.1 / 10.11.1 / 11.1.2, Certified Asterisk
1.8.11-cert10 or apply the patches listed in the Asterisk advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2012-5976");

  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:"2013/01/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/01/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/02/20");

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

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

  script_copyright(english:"This script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("asterisk_detection.nasl");
  script_require_keys("asterisk/sip_detected", "Settings/ParanoidReport");

  exit(0);
}

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

get_kb_item_or_exit("asterisk/sip_detected");

# see if we were able to get version info from the Asterisk SIP services
asterisk_kbs = get_kb_list("sip/asterisk/*/version");
if (isnull(asterisk_kbs)) exit(1, "Could not obtain any version information from the Asterisk SIP instance(s).");

# Prevent potential false positives.
if (report_paranoia < 2) audit(AUDIT_PARANOID);

is_vuln = FALSE;
not_vuln_installs = make_list();
errors = make_list();

foreach kb_name (keys(asterisk_kbs))
{
  vulnerable = 0;

  matches = eregmatch(pattern:"/(udp|tcp)/([0-9]+)/version", string:kb_name);
  if (isnull(matches))
  {
    errors = make_list(errors, "Unexpected error parsing port number from kb name: "+kb_name);
    continue;
  }

  proto = matches[1];
  port  = matches[2];
  version = asterisk_kbs[kb_name];

  if (version == 'unknown')
  {
    errors = make_list(errors, "Unable to obtain version of install on " + proto + "/" + port);
    continue;
  }

  banner = get_kb_item("sip/asterisk/" + proto + "/" + port + "/source");
  if (!banner)
  {
    # We have version but banner is missing; log error
    # and use in version-check though.
    errors = make_list(errors, "KB item 'sip/asterisk/" + proto + "/" + port + "/source' is missing");
    banner = 'unknown';
  }

  # Open Source 10x < 10.11.1
  if (version =~ "^10([^0-9]|$)" && "cert" >!< tolower(version))
  {
    fixed = "10.11.1";
    vulnerable = ver_compare(ver:version, fix:fixed, app:"asterisk");
  }

  # Open Source 11x < 11.1.2
  if (version =~ "^11([^0-9]|$)" && "cert" >!< tolower(version))
  {
    fixed = "11.1.2";
    vulnerable = ver_compare(ver:version, fix:fixed, app:"asterisk");
  }

  # Open Source 1.8.x < 1.8.19.1
  if (version =~ "^1\.8([^0-9]|$)" && "cert" >!< tolower(version))
  {
    fixed = "1.8.19.1";
    vulnerable = ver_compare(ver:version, fix:fixed, app:"asterisk");
  }

  # Asterisk Certified 1.8.11-certx < 1.8.11-cert10
  if (version =~ "^1\.8\.11([^0-9]|$)" && "cert" >< tolower(version))
  {
    fixed = "1.8.11-cert10";
    vulnerable = ver_compare(ver:version, fix:fixed, app:"asterisk");
  }

  if (vulnerable < 0)
  {
    is_vuln = TRUE;
    if (report_verbosity > 0)
    {
      report =
        '\n  Version source    : ' + banner +
        '\n  Installed version : ' + version +
        '\n  Fixed version     : ' + fixed + '\n';
      security_warning(port:port, proto:proto, extra:report);
    }
    else security_warning(port:port, proto:proto);
  }
  else not_vuln_installs = make_list(not_vuln_installs, version + " on port " + proto + "/" + port);
}

if (max_index(errors))
{
  if (max_index(errors) == 1) errmsg = errors[0];
  else errmsg = 'Errors were encountered verifying installs : \n  ' + join(errors, sep:'\n  ');

  exit(1, errmsg);
}
else
{
  installs = max_index(not_vuln_installs);
  if (installs == 0)
  {
    if (is_vuln)
      exit(0);
    else
      audit(AUDIT_NOT_INST, "Asterisk");
  }
  else if (installs == 1) audit(AUDIT_INST_VER_NOT_VULN, "Asterisk " + not_vuln_installs[0]);
  else exit(0, "The Asterisk installs (" + join(not_vuln_installs, sep:", ") + ") are not affected.");
}

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2013-0992.
#

include("compat.inc");

if (description)
{
  script_id(64369);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2012-5976", "CVE-2012-5977");
  script_xref(name:"FEDORA", value:"2013-0992");

  script_name(english:"Fedora 16 : asterisk-1.8.20.0-1.fc16 (2013-0992)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The Asterisk Development Team has announced the release of Asterisk
1.8.20.0. This release is available for immediate download at
http://downloads.asterisk.org/pub/telephony/asterisk

The release of Asterisk 1.8.20.0 resolves several issues reported by
the community and would have not been possible without your
participation. Thank you!

The following is a sample of the issues resolved in this release :

  - --- app_meetme: Fix channels lingering when hung up
    under certain conditions (Closes issue ASTERISK-20486.
    Reported by Michael Cargile)

  - --- Fix stuck DTMF when bridge is broken. (Closes issue
    ASTERISK-20492. Reported by Jeremiah Gowdy)

  - --- Improve Code Readability And Fix Setting natdetected
    Flag (Closes issue ASTERISK-20724. Reported by Michael
    L. Young)

  - --- Fix extension matching with the '-' char. (Closes
    issue ASTERISK-19205. Reported by Philippe Lindheimer,
    Birger 'WIMPy' Harzenetter)

  - --- Fix call files when astspooldir is relative. (Closes
    issue ASTERISK-20593. Reported by James Le Cuirot)

For a full list of changes in this release, please see the ChangeLog :

http://downloads.asterisk.org/pub/telephony/asterisk/ChangeLog-1.8.20.
0

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  # http://downloads.asterisk.org/pub/telephony/asterisk
  script_set_attribute(
    attribute:"see_also",
    value:"http://downloads.asterisk.org/pub/telephony/asterisk/"
  );
  # http://downloads.asterisk.org/pub/telephony/asterisk/ChangeLog-1.8.20.0
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?ba8b1513"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=891646"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=891649"
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2013-January/097815.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?66dfcde1"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected asterisk package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:asterisk");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:16");

  script_set_attribute(attribute:"patch_publication_date", value:"2013/01/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/01/31");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^16([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 16.x", "Fedora " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);

flag = 0;
if (rpm_check(release:"FC16", reference:"asterisk-1.8.20.0-1.fc16")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "asterisk");
}