Vulnerabilities > CVE-2011-4063 - Improper Input Validation vulnerability in Asterisk Open Source 1.8.7/10.0.0

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2011-14538.
#

include("compat.inc");

if (description)
{
  script_id(56788);
  script_version("1.12");
  script_cvs_date("Date: 2019/08/02 13:32:34");

  script_cve_id("CVE-2011-4063");
  script_bugtraq_id(50177);
  script_xref(name:"FEDORA", value:"2011-14538");

  script_name(english:"Fedora 15 : asterisk-1.8.7.1-1.fc15 (2011-14538)");
  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 a security release for
Asterisk= 1.8. The available security release is released as version
1.8.7.1.

This release is available for immediate download at
http://downloads.asterisk.org/pub/telephony/asterisk/releases

The release of Asterisk 1.8.7.1 resolves an issue with SIP URI parsing
whic= h can lead to a remotely exploitable crash :

Remote Crash Vulnerability in SIP channel driver (AST-2011-012)

The issue and resolution is described in the AST-2011-012 security
advisory.

For more information about the details of this vulnerability, please
read t= he security advisory AST-2011-012, which was released at the
same time as this announcement.

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

http://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLo
g-1.8= .7.1

Security advisory AST-2011-012 is available at :

http://downloads.asterisk.org/pub/security/AST-2011-012.pdf

----------------------------------------------------------------------
-----=

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."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://downloads.asterisk.org/pub/security/AST-2011-012.pdf"
  );
  # http://downloads.asterisk.org/pub/telephony/asterisk/releases
  script_set_attribute(
    attribute:"see_also",
    value:"http://downloads.asterisk.org/pub/telephony/asterisk/releases/"
  );
  # http://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLog-1.8=
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?a847c0c6"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=746817"
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2011-November/069054.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?17609f03"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected asterisk package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:ND/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:"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:15");

  script_set_attribute(attribute:"patch_publication_date", value:"2011/10/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/11/14");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2011-2019 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:"^15([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 15.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:"FC15", reference:"asterisk-1.8.7.1-1.fc15")) 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");
}