Oracle Linux 9 : openssl (ELSA-2022-6224)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2022-6224.
##

include('compat.inc');

if (description)
{
  script_id(164518);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/13");

  script_cve_id(
    "CVE-2022-1292",
    "CVE-2022-1343",
    "CVE-2022-1473",
    "CVE-2022-2068",
    "CVE-2022-2097"
  );
  script_xref(name:"IAVA", value:"2022-A-0186-S");
  script_xref(name:"IAVA", value:"2022-A-0257-S");
  script_xref(name:"IAVA", value:"2022-A-0265-S");

  script_name(english:"Oracle Linux 9 : openssl (ELSA-2022-6224)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ELSA-2022-6224 advisory.

  - The c_rehash script does not properly sanitise shell metacharacters to prevent command injection. This
    script is distributed by some operating systems in a manner where it is automatically executed. On such
    operating systems, an attacker could execute arbitrary commands with the privileges of the script. Use of
    the c_rehash script is considered obsolete and should be replaced by the OpenSSL rehash command line tool.
    Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2). Fixed in OpenSSL 1.1.1o (Affected 1.1.1-1.1.1n).
    Fixed in OpenSSL 1.0.2ze (Affected 1.0.2-1.0.2zd). (CVE-2022-1292)

  - In addition to the c_rehash shell command injection identified in CVE-2022-1292, further circumstances
    where the c_rehash script does not properly sanitise shell metacharacters to prevent command injection
    were found by code review. When the CVE-2022-1292 was fixed it was not discovered that there are other
    places in the script where the file names of certificates being hashed were possibly passed to a command
    executed through the shell. This script is distributed by some operating systems in a manner where it is
    automatically executed. On such operating systems, an attacker could execute arbitrary commands with the
    privileges of the script. Use of the c_rehash script is considered obsolete and should be replaced by the
    OpenSSL rehash command line tool. Fixed in OpenSSL 3.0.4 (Affected 3.0.0,3.0.1,3.0.2,3.0.3). Fixed in
    OpenSSL 1.1.1p (Affected 1.1.1-1.1.1o). Fixed in OpenSSL 1.0.2zf (Affected 1.0.2-1.0.2ze). (CVE-2022-2068)

  - AES OCB mode for 32-bit x86 platforms using the AES-NI assembly optimised implementation will not encrypt
    the entirety of the data under some circumstances. This could reveal sixteen bytes of data that was
    preexisting in the memory that wasn't written. In the special case of in place encryption, sixteen bytes
    of the plaintext would be revealed. Since OpenSSL does not support OCB based cipher suites for TLS and
    DTLS, they are both unaffected. Fixed in OpenSSL 3.0.5 (Affected 3.0.0-3.0.4). Fixed in OpenSSL 1.1.1q
    (Affected 1.1.1-1.1.1p). (CVE-2022-2097)

  - The function `OCSP_basic_verify` verifies the signer certificate on an OCSP response. In the case where
    the (non-default) flag OCSP_NOCHECKS is used then the response will be positive (meaning a successful
    verification) even in the case where the response signing certificate fails to verify. It is anticipated
    that most users of `OCSP_basic_verify` will not use the OCSP_NOCHECKS flag. In this case the
    `OCSP_basic_verify` function will return a negative value (indicating a fatal error) in the case of a
    certificate verification failure. The normal expected return value in this case would be 0. This issue
    also impacts the command line OpenSSL ocsp application. When verifying an ocsp response with the
    -no_cert_checks option the command line application will report that the verification is successful even
    though it has in fact failed. In this case the incorrect successful response will also be accompanied by
    error messages showing the failure and contradicting the apparently successful result. Fixed in OpenSSL
    3.0.3 (Affected 3.0.0,3.0.1,3.0.2). (CVE-2022-1343)

  - The OPENSSL_LH_flush() function, which empties a hash table, contains a bug that breaks reuse of the
    memory occuppied by the removed hash table entries. This function is used when decoding certificates or
    keys. If a long lived process periodically decodes certificates or keys its memory usage will expand
    without bounds and the process might be terminated by the operating system causing a denial of service.
    Also traversing the empty hash table entries will take increasingly more time. Typically such long lived
    processes might be TLS clients or TLS servers configured to accept client certificate authentication. The
    function was added in the OpenSSL 3.0 version thus older releases are not affected by the issue. Fixed in
    OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2). (CVE-2022-1473)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://linux.oracle.com/errata/ELSA-2022-6224.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-2068");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/05/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/08/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/08/31");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:openssl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:openssl-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:openssl-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:openssl-perl");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item('Host/OracleLinux')) audit(AUDIT_OS_NOT, 'Oracle Linux');
var release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Oracle Linux');
var os_ver = os_ver[1];
if (! preg(pattern:"^9([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Oracle Linux 9', 'Oracle Linux ' + os_ver);

if (!get_kb_item('Host/RedHat/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$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Oracle Linux', cpu);

var pkgs = [
    {'reference':'openssl-3.0.1-41.0.1.el9_0', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'openssl-3.0.1-41.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'openssl-devel-3.0.1-41.0.1.el9_0', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'openssl-devel-3.0.1-41.0.1.el9_0', 'cpu':'i686', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'openssl-devel-3.0.1-41.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'openssl-libs-3.0.1-41.0.1.el9_0', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'openssl-libs-3.0.1-41.0.1.el9_0', 'cpu':'i686', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'openssl-libs-3.0.1-41.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'openssl-perl-3.0.1-41.0.1.el9_0', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'openssl-perl-3.0.1-41.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var reference = NULL;
  var release = NULL;
  var sp = NULL;
  var cpu = NULL;
  var el_string = NULL;
  var rpm_spec_vers_cmp = NULL;
  var epoch = NULL;
  var allowmaj = NULL;
  var exists_check = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) release = 'EL' + package_array['release'];
  if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];
  if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
  if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
  if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (reference && release) {
    if (exists_check) {
        if (rpm_exists(release:release, rpm:exists_check) && rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
    } else {
        if (rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
    }
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      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, 'openssl / openssl-devel / openssl-libs / etc');
}