Ubuntu 12.04 LTS / 12.10 / 13.04 / 13.10 : openssl vulnerabilities (USN-2079-1)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-2079-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(71896);
  script_version("1.12");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");

  script_cve_id("CVE-2013-4353", "CVE-2013-6449", "CVE-2013-6450");
  script_bugtraq_id(64530, 64618, 64691);
  script_xref(name:"USN", value:"2079-1");

  script_name(english:"Ubuntu 12.04 LTS / 12.10 / 13.04 / 13.10 : openssl vulnerabilities (USN-2079-1)");
  script_summary(english:"Checks dpkg output for updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Ubuntu host is missing a security-related patch."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Anton Johansson discovered that OpenSSL incorrectly handled certain
invalid TLS handshakes. A remote attacker could use this issue to
cause OpenSSL to crash, resulting in a denial of service.
(CVE-2013-4353)

Ron Barber discovered that OpenSSL used an incorrect data structure to
obtain a version number. A remote attacker could use this issue to
cause OpenSSL to crash, resulting in a denial of service.
(CVE-2013-6449)

Dmitry Sobinov discovered that OpenSSL incorrectly handled certain
DTLS retransmissions. A remote attacker could use this issue to cause
OpenSSL to crash, resulting in a denial of service. (CVE-2013-6450)

This update also disables the default use of the RdRand feature of
certain Intel CPUs as the sole source of entropy.

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/2079-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected libssl1.0.0 package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/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:libssl1.0.0");
  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:"cpe", value:"cpe:/o:canonical:ubuntu_linux:13.10");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/12/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/01/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/01/10");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2014-2020 Canonical, Inc. / NASL script (C) 2014-2019 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:"^(12\.04|12\.10|13\.04|13\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 12.04 / 12.10 / 13.04 / 13.10", "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:"12.04", pkgname:"libssl1.0.0", pkgver:"1.0.1-4ubuntu5.11")) flag++;
if (ubuntu_check(osver:"12.10", pkgname:"libssl1.0.0", pkgver:"1.0.1c-3ubuntu2.6")) flag++;
if (ubuntu_check(osver:"13.04", pkgname:"libssl1.0.0", pkgver:"1.0.1c-4ubuntu8.2")) flag++;
if (ubuntu_check(osver:"13.10", pkgname:"libssl1.0.0", pkgver:"1.0.1e-3ubuntu1.1")) 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, "libssl1.0.0");
}