Alibaba Cloud Linux 3 : 0037: pki-core:10.6 (ALINUX3-SA-2021:0037)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# Alibaba Cloud Linux Security Advisory ALINUX3-SA-2021:0037.
##

include('compat.inc');

if (description)
{
  script_id(236419);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/10/01");

  script_cve_id(
    "CVE-2020-1935",
    "CVE-2020-1938",
    "CVE-2020-11023",
    "CVE-2020-15720",
    "CVE-2020-25762",
    "CVE-2021-3551"
  );
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2025/02/13");
  script_xref(name:"CEA-ID", value:"CEA-2021-0025");
  script_xref(name:"CEA-ID", value:"CEA-2020-0021");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/03/17");

  script_name(english:"Alibaba Cloud Linux 3 : 0037: pki-core:10.6 (ALINUX3-SA-2021:0037)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Alibaba Cloud Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced
in the ALINUX3-SA-2021:0037 advisory.

    Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

    CVE-2020-11023:
    In jQuery versions greater than or equal to 1.0.3 and before 3.5.0, passing HTML containing option
    elements from untrusted sources - even after sanitizing it - to one of jQuery's DOM manipulation methods
    (i.e. .html(), .append(), and others) may execute untrusted code. This problem is patched in jQuery 3.5.0.
    A flaw was found in jQuery. HTML containing option elements from untrusted sources are passed, even after
    sanitizing, to one of jQuery's DOM manipulation methods, which may execute untrusted code. The highest
    threat from this vulnerability is to data confidentiality and integrity.

    CVE-2020-15720:
    In Dogtag PKI through 10.8.3, the pki.client.PKIConnection class did not enable python-requests
    certificate validation. Since the verify parameter was hard-coded in all request functions, it was not
    possible to override the setting. As a result, tools making use of this class, such as the pki-server
    command, may have been vulnerable to Person-in-the-Middle attacks in certain non-localhost use cases. This
    is fixed in 10.9.0-b1. A flaw was found in PKI, where the dogtag's pki.client.PKIConnection class disables
    the python-requests certificate validation. This flaw allows an attacker to intercept a connection between
    a FreeIPA client and a server, and execute an active Man-in-the-Middle attack. The highest threat from
    this vulnerability is to confidentiality and integrity.

    CVE-2020-1935:
    In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used
    an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led
    to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly
    handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered
    unlikely. A flaw was found in Apache Tomcat. The HTTP header parsing code used an approach to end-of-line
    (EOL) parsing that allowed some invalid HTTP headers to be parsed as valid. This led to the possibility of
    HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid
    Transfer-Encoding header in a particular manner. The highest threat with this vulnerability is system
    availability.

    CVE-2020-1938:
    When using the Apache JServ Protocol (AJP), care must be taken when trusting incoming connections to
    Apache Tomcat. Tomcat treats AJP connections as having higher trust than, for example, a similar HTTP
    connection. If such connections are available to an attacker, they can be exploited in ways that may be
    surprising. In Apache Tomcat 9.0.0.M1 to 9.0.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99, Tomcat shipped
    with an AJP Connector enabled by default that listened on all configured IP addresses. It was expected
    (and recommended in the security guide) that this Connector would be disabled if not required. This
    vulnerability report identified a mechanism that allowed: - returning arbitrary files from anywhere in the
    web application - processing any file in the web application as a JSP Further, if the web application
    allowed file upload and stored those files within the web application (or the attacker was able to control
    the content of the web application by some other means) then this, along with the ability to process a
    file as a JSP, made remote code execution possible. It is important to note that mitigation is only
    required if an AJP port is accessible to untrusted users. Users wishing to take a defence-in-depth
    approach and block the vector that permits returning arbitrary files and execution as JSP may upgrade to
    Apache Tomcat 9.0.31, 8.5.51 or 7.0.100 or later. A number of changes were made to the default AJP
    Connector configuration in 9.0.31 to harden the default configuration. It is likely that users upgrading
    to 9.0.31, 8.5.51 or 7.0.100 or later will need to make small changes to their configurations.
    CVE-2020-1938 is a file read/inclusion vulnerability in the AJP connector in Apache Tomcat. This is
    enabled by default with a default configuration port of 8009. A remote, unauthenticated attacker could
    exploit this vulnerability to read web application files from a vulnerable server. In instances where the
    vulnerable server allows file uploads, an attacker could upload malicious JavaServer Pages (JSP) code
    within a variety of file types and trigger this vulnerability to gain remote code execution (RCE).

    CVE-2022-25762
    If a web application sends a WebSocket message concurrently with the WebSocket connection closing when
    running on Apache Tomcat 8.5.0 to 8.5.75 or Apache Tomcat 9.0.0.M1 to 9.0.20, it is possible that the
    application will continue to use the socket after it has been closed. The error handling triggered in this
    case could cause the a pooled object to be placed in the pool twice. This could result in subsequent
    connections using the same object concurrently which could result in data being returned to the wrong use
    and/or other errors.

    CVE-2021-3551:
    ** RESERVED ** This candidate has been reserved by an organization or individual that will use it when
    announcing a new security problem. When the candidate has been publicized, the details for this candidate
    will be provided.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux 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:"http://mirrors.aliyun.com/alinux/3/cve/alinux3-sa-20210037.xml");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:H/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:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-1938");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/02/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/07/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/05/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:jss");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:jss-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:jss-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:jss-javadoc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pki-acme");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pki-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pki-base-java");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pki-ca");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pki-core-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pki-core-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pki-kra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pki-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pki-symkey");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pki-symkey-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pki-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pki-tools-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-pki");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alibabacloud:alibaba_cloud_linux_3");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Alibaba/release');
if (isnull(os_release) || 'Alibaba Cloud Linux' >!< os_release) audit(AUDIT_OS_NOT, 'Alibaba Cloud Linux');
var os_ver = pregmatch(pattern: "Alibaba Cloud Linux release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Alibaba Cloud Linux');
os_ver = os_ver[1];
if (! preg(pattern:"^3([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Alibaba Cloud Linux 3.x', 'Alibaba Cloud Linux ' + os_ver);

if (!get_kb_item('Host/Alibaba/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('aarch64' >!< cpu && 'x86_64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Alibaba Cloud Linux', cpu);

var pkgs = [
    {'reference':'jss-4.8.1-2.1.al8', 'cpu':'aarch64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'jss-4.8.1-2.1.al8', 'cpu':'x86_64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'jss-debuginfo-4.8.1-2.1.al8', 'cpu':'aarch64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'jss-debuginfo-4.8.1-2.1.al8', 'cpu':'x86_64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'jss-debugsource-4.8.1-2.1.al8', 'cpu':'aarch64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'jss-debugsource-4.8.1-2.1.al8', 'cpu':'x86_64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'jss-javadoc-4.8.1-2.1.al8', 'cpu':'aarch64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'jss-javadoc-4.8.1-2.1.al8', 'cpu':'x86_64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'pki-acme-10.10.5-3.1.al8', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'pki-base-10.10.5-3.1.al8', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'pki-base-java-10.10.5-3.1.al8', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'pki-ca-10.10.5-3.1.al8', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'pki-core-debuginfo-10.10.5-3.1.al8', 'cpu':'aarch64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'pki-core-debuginfo-10.10.5-3.1.al8', 'cpu':'x86_64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'pki-core-debugsource-10.10.5-3.1.al8', 'cpu':'aarch64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'pki-core-debugsource-10.10.5-3.1.al8', 'cpu':'x86_64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'pki-kra-10.10.5-3.1.al8', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'pki-server-10.10.5-3.1.al8', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'pki-symkey-10.10.5-3.1.al8', 'cpu':'aarch64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'pki-symkey-10.10.5-3.1.al8', 'cpu':'x86_64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'pki-symkey-debuginfo-10.10.5-3.1.al8', 'cpu':'aarch64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'pki-symkey-debuginfo-10.10.5-3.1.al8', 'cpu':'x86_64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'pki-tools-10.10.5-3.1.al8', 'cpu':'aarch64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'pki-tools-10.10.5-3.1.al8', 'cpu':'x86_64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'pki-tools-debuginfo-10.10.5-3.1.al8', 'cpu':'aarch64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'pki-tools-debuginfo-10.10.5-3.1.al8', 'cpu':'x86_64', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'python3-pki-10.10.5-3.1.al8', 'release':'3', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'}
];

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;
  var cves = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = 'Alibaba Linux ' + 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 (!empty_or_null(package_array['cves'])) cves = package_array['cves'];
  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, cves:cves)) 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, 'jss / jss-debuginfo / jss-debugsource / jss-javadoc / pki-acme / etc');
}