openSUSE Security Update : enigmail (openSUSE-2018-470) (EFAIL)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2018-470.
#
# The text description of this plugin is (C) SUSE LLC.
#

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

if (description)
{
  script_id(109904);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");

  script_cve_id("CVE-2017-17688", "CVE-2017-17689");

  script_name(english:"openSUSE Security Update : enigmail (openSUSE-2018-470) (EFAIL)");
  script_summary(english:"Check for the openSUSE-2018-470 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for enigmail to version 2.0.4 fixes multiple issues.

Security issues fixed :

  - CVE-2017-17688: CFB gadget attacks allowed to exfiltrate
    plaintext out of encrypted emails. enigmail now fails on
    GnuPG integrity check warnings for old Algorithms
    (bsc#1093151)

  - CVE-2017-17689: CBC gadget attacks allows to exfiltrate
    plaintext out of encrypted emails (bsc#1093152)

This update also includes new and updated functionality :

  - The Encryption and Signing buttons now work for both
    OpenPGP and S/MIME. Enigmail will chose between S/MIME
    or OpenPGP depending on whether the keys for all
    recipients are available for the respective standard

  - Support for the Autocrypt standard, which is now enabled
    by default

  - Support for Pretty Easy Privacy (p≡p)

  - Support for Web Key Directory (WKD)

  - The message subject can now be encrypted and replaced
    with a dummy subject, following the Memory Hole standard
    forprotected Email Headers

  - keys on keyring are automatically refreshed from
    keyservers at irregular intervals

  - Subsequent updates of Enigmail no longer require a
    restart of Thunderbird 

  - Keys are internally addressed using the fingerprint
    instead of the key ID"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1093151"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1093152"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected enigmail package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:enigmail");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:42.3");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/05/17");
  script_set_attribute(attribute:"in_the_news", value:"true");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/05/18");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu");

  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/SuSE/release");
if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE");
if (release !~ "^(SUSE42\.3)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "42.3", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE42.3", reference:"enigmail-2.0.4-12.1") ) 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, "enigmail");
}