Ubuntu 10.04 LTS / 12.04 LTS / 12.10 / 13.04 : curl vulnerability (USN-1894-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-1894-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(67138);
  script_version("1.9");
  script_cvs_date("Date: 2019/09/19 12:54:29");

  script_cve_id("CVE-2013-2174");
  script_bugtraq_id(60737);
  script_xref(name:"USN", value:"1894-1");

  script_name(english:"Ubuntu 10.04 LTS / 12.04 LTS / 12.10 / 13.04 : curl vulnerability (USN-1894-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Timo Sirainen discovered that libcurl incorrectly handled memory when
parsing URL encoded strings. An attacker could possibly use this issue
to cause libcurl to crash, leading to a denial of service, or execute
arbitrary code.

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu 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:"https://usn.ubuntu.com/1894-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Update the affected libcurl3, libcurl3-gnutls and / or libcurl3-nss
packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  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:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl3-gnutls");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl3-nss");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:10.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:12.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:12.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:13.04");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/07/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/07/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/07/03");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2013-2019 Canonical, Inc. / NASL script (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}


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

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(10\.04|12\.04|12\.10|13\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 10.04 / 12.04 / 12.10 / 13.04", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) 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, "Ubuntu", cpu);

flag = 0;

if (ubuntu_check(osver:"10.04", pkgname:"libcurl3", pkgver:"7.19.7-1ubuntu1.3")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"libcurl3-gnutls", pkgver:"7.19.7-1ubuntu1.3")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"libcurl3", pkgver:"7.22.0-3ubuntu4.2")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"libcurl3-gnutls", pkgver:"7.22.0-3ubuntu4.2")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"libcurl3-nss", pkgver:"7.22.0-3ubuntu4.2")) flag++;
if (ubuntu_check(osver:"12.10", pkgname:"libcurl3", pkgver:"7.27.0-1ubuntu1.3")) flag++;
if (ubuntu_check(osver:"12.10", pkgname:"libcurl3-gnutls", pkgver:"7.27.0-1ubuntu1.3")) flag++;
if (ubuntu_check(osver:"12.10", pkgname:"libcurl3-nss", pkgver:"7.27.0-1ubuntu1.3")) flag++;
if (ubuntu_check(osver:"13.04", pkgname:"libcurl3", pkgver:"7.29.0-1ubuntu3.1")) flag++;
if (ubuntu_check(osver:"13.04", pkgname:"libcurl3-gnutls", pkgver:"7.29.0-1ubuntu3.1")) flag++;
if (ubuntu_check(osver:"13.04", pkgname:"libcurl3-nss", pkgver:"7.29.0-1ubuntu3.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libcurl3 / libcurl3-gnutls / libcurl3-nss");
}