Ubuntu 8.04 LTS / 10.04 LTS / 11.04 / 11.10 / 12.04 LTS : gnupg, gnupg2 vulnerability (USN-1570-1)

2012-09-18T00:00:00
ID UBUNTU_USN-1570-1.NASL
Type nessus
Reporter Tenable
Modified 2018-08-15T00:00:00

Description

It was discovered that GnuPG used a short ID when downloading keys from a keyserver, even if a long ID was requested. An attacker could possibly use this to return a different key with a duplicate short key id.

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-1570-1. 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(62179);
  script_version("1.5");
  script_cvs_date("Date: 2018/08/15 12:24:49");

  script_xref(name:"USN", value:"1570-1");

  script_name(english:"Ubuntu 8.04 LTS / 10.04 LTS / 11.04 / 11.10 / 12.04 LTS : gnupg, gnupg2 vulnerability (USN-1570-1)");
  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 GnuPG used a short ID when downloading keys
from a keyserver, even if a long ID was requested. An attacker could
possibly use this to return a different key with a duplicate short key
id.

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 gnupg and / or gnupg2 packages."
  );
  script_set_attribute(attribute:"risk_factor", value:"High");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gnupg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gnupg2");
  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:11.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:11.10");
  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:8.04:-:lts");

  script_set_attribute(attribute:"patch_publication_date", value:"2012/09/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/09/18");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2012-2018 Canonical, Inc. / NASL script (C) 2018 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 (! ereg(pattern:"^(8\.04|10\.04|11\.04|11\.10|12\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 8.04 / 10.04 / 11.04 / 11.10 / 12.04", "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:"8.04", pkgname:"gnupg", pkgver:"1.4.6-2ubuntu5.1")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"gnupg2", pkgver:"2.0.7-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"gnupg", pkgver:"1.4.10-2ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"gnupg2", pkgver:"2.0.14-1ubuntu1.4")) flag++;
if (ubuntu_check(osver:"11.04", pkgname:"gnupg", pkgver:"1.4.11-3ubuntu1.11.04.1")) flag++;
if (ubuntu_check(osver:"11.04", pkgname:"gnupg2", pkgver:"2.0.14-2ubuntu1.2")) flag++;
if (ubuntu_check(osver:"11.10", pkgname:"gnupg", pkgver:"1.4.11-3ubuntu1.11.10.1")) flag++;
if (ubuntu_check(osver:"11.10", pkgname:"gnupg2", pkgver:"2.0.17-2ubuntu2.11.10.1")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"gnupg", pkgver:"1.4.11-3ubuntu2.1")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"gnupg2", pkgver:"2.0.17-2ubuntu2.12.04.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    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, "gnupg / gnupg2");
}