RockyLinux 9 : libssh (RLSA-2024:2504)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# Rocky Linux Security Advisory RLSA-2024:2504.
##

include('compat.inc');

if (description)
{
  script_id(235526);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/05/07");

  script_cve_id("CVE-2023-6004", "CVE-2023-6918");
  script_xref(name:"RLSA", value:"2024:2504");

  script_name(english:"RockyLinux 9 : libssh (RLSA-2024:2504)");

  script_set_attribute(attribute:"synopsis", value:
"The remote RockyLinux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the
RLSA-2024:2504 advisory.

    * libssh: ProxyCommand/ProxyJump features allow injection of malicious code through hostname
    (CVE-2023-6004)

    * libssh: Missing checks for return values for digests (CVE-2023-6918)

Tenable has extracted the preceding description block directly from the RockyLinux 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://errata.rockylinux.org/RLSA-2024:2504");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2251110");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2254997");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/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:L/PR:L/UI:R/S:U/C:L/I:L/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-6004");

  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:"2023/12/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/05/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/05/07");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:libssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:libssh-config");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:libssh-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:libssh-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:libssh-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:rocky:linux:9");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Rocky 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/RockyLinux/release", "Host/RockyLinux/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/RockyLinux/release');
if (isnull(os_release) || 'Rocky Linux' >!< os_release) audit(AUDIT_OS_NOT, 'Rocky Linux');
var os_ver = pregmatch(pattern: "Rocky(?: Linux)? release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Rocky Linux');
os_ver = os_ver[1];
if (! preg(pattern:"^9([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'RockyLinux 9.x', 'Rocky Linux ' + os_ver);

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

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

var pkgs = [
    {'reference':'libssh-0.10.4-13.el9', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'libssh-0.10.4-13.el9', 'cpu':'i686', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'libssh-0.10.4-13.el9', 'cpu':'ppc64le', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'libssh-0.10.4-13.el9', 'cpu':'s390x', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'libssh-0.10.4-13.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'libssh-config-0.10.4-13.el9', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'libssh-debuginfo-0.10.4-13.el9', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'libssh-debuginfo-0.10.4-13.el9', 'cpu':'ppc64le', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'libssh-debuginfo-0.10.4-13.el9', 'cpu':'s390x', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'libssh-debuginfo-0.10.4-13.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'libssh-debugsource-0.10.4-13.el9', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'libssh-debugsource-0.10.4-13.el9', 'cpu':'ppc64le', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'libssh-debugsource-0.10.4-13.el9', 'cpu':'s390x', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'libssh-debugsource-0.10.4-13.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'libssh-devel-0.10.4-13.el9', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'libssh-devel-0.10.4-13.el9', 'cpu':'i686', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'libssh-devel-0.10.4-13.el9', 'cpu':'ppc64le', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'libssh-devel-0.10.4-13.el9', 'cpu':'s390x', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
    {'reference':'libssh-devel-0.10.4-13.el9', 'cpu':'x86_64', 'release':'9', '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 = 'Rocky-' + 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_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, 'libssh / libssh-config / libssh-debuginfo / libssh-debugsource / etc');
}