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nessusThis script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.AL2023_ALAS2023-2024-636.NASL
HistoryJun 10, 2024 - 12:00 a.m.

Amazon Linux 2023 : bouncycastle, bouncycastle-javadoc, bouncycastle-mail (ALAS2023-2024-636)

2024-06-1000:00:00
This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
amazon linux 2023
secure update
bouncycastle
bouncycastle-javadoc
bouncycastle-mail
alas2023-2024-636
vulnerability
bouncy castle java
api
ssl socket
endpoint identification
hostname verification
dns poisoning
tenable
nessus
security advisory

7.6 High

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.6%

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2024-636 advisory.

An issue was discovered in Bouncy Castle Java Cryptography APIs before ...

NOTE: https://github.com/bcgit/bc-java/issues/1635NOTE:
https://www.bouncycastle.org/latest_releases.htmlDEBIANBUG: [1070655] (CVE-2024-29857)

An issue was discovered in Bouncy Castle Java Cryptography APIs before BC 1.78. When endpoint     identification is enabled in the BCJSSE and an SSL socket is created without an explicit hostname (as     happens with HttpsURLConnection), hostname verification could be performed against a DNS-resolved IP     address in some situations, opening up a possibility of DNS poisoning. (CVE-2024-34447)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux 2023 Security Advisory ALAS2023-2024-636.
##

include('compat.inc');

if (description)
{
  script_id(200264);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/10");

  script_cve_id("CVE-2024-29857", "CVE-2024-34447");

  script_name(english:"Amazon Linux 2023 : bouncycastle, bouncycastle-javadoc, bouncycastle-mail (ALAS2023-2024-636)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Amazon Linux 2023 host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2024-636 advisory.

    An issue was discovered in Bouncy Castle Java Cryptography APIs before ...

    NOTE: https://github.com/bcgit/bc-java/issues/1635NOTE:
    https://www.bouncycastle.org/latest_releases.htmlDEBIANBUG: [1070655] (CVE-2024-29857)

    An issue was discovered in Bouncy Castle Java Cryptography APIs before BC 1.78. When endpoint
    identification is enabled in the BCJSSE and an SSL socket is created without an explicit hostname (as
    happens with HttpsURLConnection), hostname verification could be performed against a DNS-resolved IP
    address in some situations, opening up a possibility of DNS poisoning. (CVE-2024-34447)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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://alas.aws.amazon.com/AL2023/ALAS-2024-636.html");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2024-29857.html");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2024-34447.html");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/faqs.html");
  script_set_attribute(attribute:"solution", value:
"Run 'dnf update bouncycastle --releasever 2023.4.20240611' to update your system.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-34447");

  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:"2024/05/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/06/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/06/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:bouncycastle");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:bouncycastle-javadoc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:bouncycastle-mail");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:bouncycastle-pg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:bouncycastle-pkix");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:bouncycastle-tls");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:bouncycastle-util");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux:2023");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}

include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

var alas_release = get_kb_item("Host/AmazonLinux/release");
if (isnull(alas_release) || !strlen(alas_release)) audit(AUDIT_OS_NOT, "Amazon Linux");
var os_ver = pregmatch(pattern: "^AL(A|\d+|-\d+)", string:alas_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "-2023")
{
  if (os_ver == 'A') os_ver = 'AMI';
  audit(AUDIT_OS_NOT, "Amazon Linux 2023", "Amazon Linux " + os_ver);
}

if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

var pkgs = [
    {'reference':'bouncycastle-1.70-4.amzn2023.0.5', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'bouncycastle-javadoc-1.70-4.amzn2023.0.5', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'bouncycastle-mail-1.70-4.amzn2023.0.5', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'bouncycastle-pg-1.70-4.amzn2023.0.5', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'bouncycastle-pkix-1.70-4.amzn2023.0.5', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'bouncycastle-tls-1.70-4.amzn2023.0.5', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'bouncycastle-util-1.70-4.amzn2023.0.5', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE}
];

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 = 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 && (!exists_check || rpm_exists(release:_release, rpm:exists_check))) {
    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_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, "bouncycastle / bouncycastle-javadoc / bouncycastle-mail / etc");
}
VendorProductVersionCPE
amazonlinuxbouncycastle-javadocp-cpe:/a:amazon:linux:bouncycastle-javadoc
amazonlinuxbouncycastle-pgp-cpe:/a:amazon:linux:bouncycastle-pg
amazonlinuxbouncycastle-tlsp-cpe:/a:amazon:linux:bouncycastle-tls
amazonlinuxbouncycastle-pkixp-cpe:/a:amazon:linux:bouncycastle-pkix
amazonlinuxbouncycastlep-cpe:/a:amazon:linux:bouncycastle
amazonlinuxbouncycastle-utilp-cpe:/a:amazon:linux:bouncycastle-util
amazonlinuxbouncycastle-mailp-cpe:/a:amazon:linux:bouncycastle-mail
amazonlinux2023cpe:/o:amazon:linux:2023

7.6 High

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.6%