Ubuntu 14.04 LTS / 15.04 / 15.10 : icedtea-web vulnerabilities (USN-2817-1)

2015-11-25T00:00:00
ID UBUNTU_USN-2817-1.NASL
Type nessus
Reporter Tenable
Modified 2016-05-24T00:00:00

Description

It was discovered that IcedTea Web incorrectly handled applet URLs. A remote attacker could possibly use this issue to inject applets into the .appletTrustSettings configuration file and bypass user approval. (CVE-2015-5234)

Andrea Palazzo discovered that IcedTea Web incorrectly determined the origin of unsigned applets. A remote attacker could possibly use this issue to bypass user approval, or to trick the user into approving applet execution. (CVE-2015-5235).

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.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-2817-1. 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(87066);
  script_version("$Revision: 2.3 $");
  script_cvs_date("$Date: 2016/05/24 17:52:27 $");

  script_cve_id("CVE-2015-5234", "CVE-2015-5235");
  script_osvdb_id(127019, 127031);
  script_xref(name:"USN", value:"2817-1");

  script_name(english:"Ubuntu 14.04 LTS / 15.04 / 15.10 : icedtea-web vulnerabilities (USN-2817-1)");
  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:
"It was discovered that IcedTea Web incorrectly handled applet URLs. A
remote attacker could possibly use this issue to inject applets into
the .appletTrustSettings configuration file and bypass user approval.
(CVE-2015-5234)

Andrea Palazzo discovered that IcedTea Web incorrectly determined the
origin of unsigned applets. A remote attacker could possibly use this
issue to bypass user approval, or to trick the user into approving
applet execution. (CVE-2015-5235).

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:"solution", 
    value:
"Update the affected icedtea-6-plugin and / or icedtea-7-plugin
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:icedtea-6-plugin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:icedtea-7-plugin");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:15.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:15.10");

  script_set_attribute(attribute:"patch_publication_date", value:"2015/11/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/11/25");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2015-2016 Canonical, Inc. / NASL script (C) 2015-2016 Tenable Network Security, Inc.");
  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 (! ereg(pattern:"^(14\.04|15\.04|15\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 14.04 / 15.04 / 15.10", "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:"14.04", pkgname:"icedtea-6-plugin", pkgver:"1.5.3-0ubuntu0.14.04.1")) flag++;
if (ubuntu_check(osver:"14.04", pkgname:"icedtea-7-plugin", pkgver:"1.5.3-0ubuntu0.14.04.1")) flag++;
if (ubuntu_check(osver:"15.04", pkgname:"icedtea-7-plugin", pkgver:"1.5.3-0ubuntu0.15.04.1")) flag++;
if (ubuntu_check(osver:"15.10", pkgname:"icedtea-7-plugin", pkgver:"1.5.3-0ubuntu0.15.10.1")) 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, "icedtea-6-plugin / icedtea-7-plugin");
}