RHEL 9 : net-snmp (RHSA-2024:7875)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2024:7875. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(208661);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/02/11");

  script_cve_id(
    "CVE-2022-24805",
    "CVE-2022-24806",
    "CVE-2022-24807",
    "CVE-2022-24808",
    "CVE-2022-24809",
    "CVE-2022-24810"
  );
  script_xref(name:"RHSA", value:"2024:7875");

  script_name(english:"RHEL 9 : net-snmp (RHSA-2024:7875)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for net-snmp.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2024:7875 advisory.

    The net-snmp packages provide various libraries and tools for the Simple Network Management Protocol
    (SNMP), including an SNMP library, an extensible agent, tools for requesting or setting information from
    SNMP agents, tools for generating and handling SNMP traps, a version of the netstat command which uses
    SNMP, and a Tk/Perl Management Information Base (MIB) browser.

    Security Fix(es):

    * net-snmp: A buffer overflow in the handling of the INDEX of             NET-SNMP-VACM-MIB can cause an
    out-of-bounds memory access. (CVE-2022-24805)

    * : net-snmp: Improper Input Validation when SETing malformed OIDs in master agent and subagent
    simultaneously (CVE-2022-24806)

    * net-snmp: A malformed OID in a SET request to SNMP-VIEW-BASED-ACM-MIB::vacmAccessTable can cause an out-
    of-bounds memory access (CVE-2022-24807)

    * net-snmp: A malformed OID in a GET-NEXT to the nsVacmAccessTable can cause a NULL pointer dereference.
    (CVE-2022-24809)

    * net-snmp: A malformed OID in a SET request to NET-SNMP-AGENT-MIB::nsLogTable can cause a NULL pointer
    dereference (CVE-2022-24808)

    * net-snmp: A malformed OID in a SET to the nsVacmAccessTable can cause a NULL pointer dereference.
    (CVE-2022-24810)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and
    other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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:"https://access.redhat.com/security/updates/classification/#moderate");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2103225");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2104759");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2104763");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2104766");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2104768");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2104769");
  # https://security.access.redhat.com/data/csaf/v2/advisories/2024/rhsa-2024_7875.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?67f81299");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2024:7875");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL net-snmp package based on the guidance in RHSA-2024:7875.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  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:L/UI:N/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-2022-24810");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(20, 125, 476, 1320);
  script_set_attribute(attribute:"vendor_severity", value:"Moderate");

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/08/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/10/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/10/09");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_eus:9.2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:net-snmp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:net-snmp-agent-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:net-snmp-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:net-snmp-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:net-snmp-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:net-snmp-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:python3-net-snmp");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2024-2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('rpm.inc');
include('rhel.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/RedHat/release');
if (isnull(os_release) || 'Red Hat' >!< os_release) audit(AUDIT_OS_NOT, 'Red Hat');
var os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
os_ver = os_ver[1];
if (!rhel_check_release(operator: 'eq', os_version: os_ver, rhel_version: '9.2')) audit(AUDIT_OS_NOT, 'Red Hat 9.2', 'Red Hat ' + 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$" && 's390' >!< cpu && 'aarch64' >!< cpu && 'ppc' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);

var constraints = [
  {
    'repo_relative_urls': [
      'content/aus/rhel9/9.2/x86_64/appstream/debug',
      'content/aus/rhel9/9.2/x86_64/appstream/os',
      'content/aus/rhel9/9.2/x86_64/appstream/source/SRPMS',
      'content/e4s/rhel9/9.2/aarch64/appstream/debug',
      'content/e4s/rhel9/9.2/aarch64/appstream/os',
      'content/e4s/rhel9/9.2/aarch64/appstream/source/SRPMS',
      'content/e4s/rhel9/9.2/ppc64le/appstream/debug',
      'content/e4s/rhel9/9.2/ppc64le/appstream/os',
      'content/e4s/rhel9/9.2/ppc64le/appstream/source/SRPMS',
      'content/e4s/rhel9/9.2/s390x/appstream/debug',
      'content/e4s/rhel9/9.2/s390x/appstream/os',
      'content/e4s/rhel9/9.2/s390x/appstream/source/SRPMS',
      'content/e4s/rhel9/9.2/x86_64/appstream/debug',
      'content/e4s/rhel9/9.2/x86_64/appstream/os',
      'content/e4s/rhel9/9.2/x86_64/appstream/source/SRPMS',
      'content/eus/rhel9/9.2/aarch64/appstream/debug',
      'content/eus/rhel9/9.2/aarch64/appstream/os',
      'content/eus/rhel9/9.2/aarch64/appstream/source/SRPMS',
      'content/eus/rhel9/9.2/ppc64le/appstream/debug',
      'content/eus/rhel9/9.2/ppc64le/appstream/os',
      'content/eus/rhel9/9.2/ppc64le/appstream/source/SRPMS',
      'content/eus/rhel9/9.2/s390x/appstream/debug',
      'content/eus/rhel9/9.2/s390x/appstream/os',
      'content/eus/rhel9/9.2/s390x/appstream/source/SRPMS',
      'content/eus/rhel9/9.2/x86_64/appstream/debug',
      'content/eus/rhel9/9.2/x86_64/appstream/os',
      'content/eus/rhel9/9.2/x86_64/appstream/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'net-snmp-5.9.1-11.el9_2.2', 'sp':'2', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'net-snmp-agent-libs-5.9.1-11.el9_2.2', 'sp':'2', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'net-snmp-devel-5.9.1-11.el9_2.2', 'sp':'2', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'net-snmp-libs-5.9.1-11.el9_2.2', 'sp':'2', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'net-snmp-perl-5.9.1-11.el9_2.2', 'sp':'2', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'net-snmp-utils-5.9.1-11.el9_2.2', 'sp':'2', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'python3-net-snmp-5.9.1-11.el9_2.2', 'sp':'2', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'}
    ]
  }
];

var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:constraints);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);

var flag = 0;
foreach var constraint_array ( constraints ) {
  var repo_relative_urls = NULL;
  if (!empty_or_null(constraint_array['repo_relative_urls'])) repo_relative_urls = constraint_array['repo_relative_urls'];
  foreach var pkg ( constraint_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(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        _release &&
        rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
        (applicable_repo_urls || (!exists_check || 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, cves:cves)) flag++;
  }
}

if (flag)
{
  var subscription_caveat = '\n' +
    'NOTE: This vulnerability check contains fixes that apply to\n' +
    'packages only available in the Red Hat Enterprise Linux\n' +
    'Extended Update Support repository.\n' +
    'Access to this repository requires a paid RHEL subscription.\n';
  var extra = NULL;
  if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = subscription_caveat + rpm_report_get() + redhat_report_repo_caveat();
  else extra = subscription_caveat + rpm_report_get();
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : extra
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'net-snmp / net-snmp-agent-libs / net-snmp-devel / net-snmp-libs / etc');
}