openSUSE 15 Security Update : rpm (openSUSE-SU-2021:2682-1)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from
# openSUSE Security Update openSUSE-SU-2021:2682-1. The text itself
# is copyright (C) SUSE.
##

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

if (description)
{
  script_id(152644);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/08/18");

  script_cve_id("CVE-2021-3421", "CVE-2021-20266", "CVE-2021-20271");

  script_name(english:"openSUSE 15 Security Update : rpm (openSUSE-SU-2021:2682-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in
the openSUSE-SU-2021:2682-1 advisory.

  - A flaw was found in RPM's hdrblobInit() in lib/header.c. This flaw allows an attacker who can modify the
    rpmdb to cause an out-of-bounds read. The highest threat from this vulnerability is to system
    availability. (CVE-2021-20266)

  - A flaw was found in RPM's signature check functionality when reading a package file. This flaw allows an
    attacker who can convince a victim to install a seemingly verifiable package, whose signature header was
    modified, to cause RPM database corruption and execute code. The highest threat from this vulnerability is
    to data integrity, confidentiality, and system availability. (CVE-2021-20271)

  - A flaw was found in the RPM package in the read functionality. This flaw allows an attacker who can
    convince a victim to install a seemingly verifiable package or compromise an RPM repository, to cause RPM
    database corruption. The highest threat from this vulnerability is to data integrity. This flaw affects
    RPM versions before 4.17.0-alpha. (CVE-2021-3421)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1179416");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1181805");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1183543");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1183545");
  # https://lists.opensuse.org/archives/list/[email protected]/thread/IQDL4MT3J7VM3IS3TI4EMLQJHDPTSZLZ/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?cc57ce4d");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-20266");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-20271");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-3421");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-20271");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/03/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/08/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/08/18");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:python2-rpm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:python3-rpm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:rpm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:rpm-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:rpm-build");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:rpm-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:rpm-ndb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:rpm-ndb-32bit");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.3");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"SuSE Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('audit.inc');
include('global_settings.inc');
include('misc_func.inc');
include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var release = get_kb_item('Host/SuSE/release');
if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, 'openSUSE');
var os_ver = pregmatch(pattern: "^SUSE([\d.]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'openSUSE');
os_ver = os_ver[1];
if (release !~ "^(SUSE15\.3)$") audit(AUDIT_OS_RELEASE_NOT, 'openSUSE', '15.3', release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'openSUSE ' + os_ver, cpu);

var pkgs = [
    {'reference':'python2-rpm-4.14.3-37.2', 'release':'SUSE15.3', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3-rpm-4.14.3-37.2', 'release':'SUSE15.3', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rpm-32bit-4.14.3-37.2', 'cpu':'x86_64', 'release':'SUSE15.3', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rpm-4.14.3-37.2', 'release':'SUSE15.3', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rpm-build-4.14.3-37.2', 'release':'SUSE15.3', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rpm-devel-4.14.3-37.2', 'release':'SUSE15.3', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rpm-ndb-32bit-4.14.3-37.2', 'cpu':'x86_64', 'release':'SUSE15.3', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rpm-ndb-4.14.3-37.2', 'release':'SUSE15.3', 'rpm_spec_vers_cmp':TRUE}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var reference = NULL;
  var release = NULL;
  var cpu = NULL;
  var rpm_spec_vers_cmp = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) release = package_array['release'];
  if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (reference && release) {
    if (rpm_check(release:release, cpu:cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'python2-rpm / python3-rpm / rpm / rpm-32bit / rpm-build / rpm-devel / etc');
}