Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 : iperf3 vulnerabilities (USN-7970-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-7970-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('compat.inc');

if (description)
{
  script_id(294897);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/01/21");

  script_cve_id(
    "CVE-2023-7250",
    "CVE-2024-26306",
    "CVE-2024-53580",
    "CVE-2025-54349",
    "CVE-2025-54350"
  );
  script_xref(name:"USN", value:"7970-1");

  script_name(english:"Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 : iperf3 vulnerabilities (USN-7970-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 host has packages installed that are affected by multiple
vulnerabilities as referenced in the USN-7970-1 advisory.

    Jorge Sancho Larraz discovered that iperf3 did not properly manage certain inputs, which could cause the
    server process to stop responding, waiting for input on the control connection. A remote attacker could
    possibly use this issue to cause a denial of service. This issue was only addressed in Ubuntu 22.04 LTS.
    (CVE-2023-7250)

    It was discovered that iperf3 had a timing side-channel when performing RSA decryption. An attacker could
    possibly use this issue to recover sensitive information. This issue was only addressed in Ubuntu 20.04
    LTS and Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-26306)

    It was discovered that iperf3 incorrectly handled certain inputs. An attacker could possibly use this
    issue to cause a denial of service. This issue was only addressed in Ubuntu 20.04 LTS, Ubuntu 22.04 LTS
    and Ubuntu 24.04 LTS. (CVE-2024-53580)

    Han Lee discovered that iperf3 had an off-by-one heap overflow. An attacker could possibly use this issue
    to crash the program or execute arbitrary code. This issue was only addressed in Ubuntu 20.04 LTS, Ubuntu
    22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2025-54349)

    Han Lee discovered that iperf3 did not properly manage certain inputs. An attacker could possibly use this
    issue to cause a denial of service. (CVE-2025-54350)

Tenable has extracted the preceding description block directly from the Ubuntu 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://ubuntu.com/security/notices/USN-7970-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected iperf3, libiperf-dev and / or libiperf0 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:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-54349");

  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:"2024/03/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/01/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/01/21");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:24.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:25.10");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:iperf3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libiperf-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libiperf0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2026 Canonical, Inc. / NASL script (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl", "ubuntu_pro_sub_detect.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}

include('debian_package.inc');

if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('20.04' >< os_release || '22.04' >< os_release || '24.04' >< os_release || '25.10' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 20.04 / 22.04 / 24.04 / 25.10', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) 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) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);
var ubuntu_pro_detected = get_kb_item('Host/Ubuntu/Pro/Services/esm-apps');
ubuntu_pro_detected = !empty_or_null(ubuntu_pro_detected);

var pro_caveat_needed = FALSE;

var pkgs = [
    {'osver': '20.04', 'pkgname': 'iperf3', 'pkgver': '3.7-3ubuntu0.1~esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libiperf-dev', 'pkgver': '3.7-3ubuntu0.1~esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libiperf0', 'pkgver': '3.7-3ubuntu0.1~esm2', 'ubuntu_pro': TRUE},
    {'osver': '22.04', 'pkgname': 'iperf3', 'pkgver': '3.9-1+deb11u1ubuntu0.1', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'libiperf-dev', 'pkgver': '3.9-1+deb11u1ubuntu0.1', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'libiperf0', 'pkgver': '3.9-1+deb11u1ubuntu0.1', 'ubuntu_pro': FALSE},
    {'osver': '24.04', 'pkgname': 'iperf3', 'pkgver': '3.16-1ubuntu0.1~esm1', 'ubuntu_pro': TRUE},
    {'osver': '24.04', 'pkgname': 'libiperf-dev', 'pkgver': '3.16-1ubuntu0.1~esm1', 'ubuntu_pro': TRUE},
    {'osver': '24.04', 'pkgname': 'libiperf0', 'pkgver': '3.16-1ubuntu0.1~esm1', 'ubuntu_pro': TRUE},
    {'osver': '25.10', 'pkgname': 'iperf3', 'pkgver': '3.18-2ubuntu0.1', 'ubuntu_pro': FALSE},
    {'osver': '25.10', 'pkgname': 'libiperf-dev', 'pkgver': '3.18-2ubuntu0.1', 'ubuntu_pro': FALSE},
    {'osver': '25.10', 'pkgname': 'libiperf0', 'pkgver': '3.18-2ubuntu0.1', 'ubuntu_pro': FALSE}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  if (!empty_or_null(package_array['cves'])) cves = package_array['cves'];
  var pro_required = NULL;
  if (!empty_or_null(package_array['ubuntu_pro'])) pro_required = package_array['ubuntu_pro'];
  if (osver && pkgname && pkgver) {
    if (deb_check(release:osver, prefix:pkgname, reference:pkgver, cves:cves)) {
        flag++;
        if (!ubuntu_pro_detected && !pro_caveat_needed) pro_caveat_needed = pro_required;
    }
  }
}

if (flag)
{
  var extra = '';
  if (pro_caveat_needed) {
    extra += 'NOTE: This vulnerability check contains fixes that apply to packages only \n';
    extra += 'available in Ubuntu ESM repositories. Access to these package security updates \n';
    extra += 'require an Ubuntu Pro subscription.\n\n';
  }
  extra += ubuntu_report_get();
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : extra
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'iperf3 / libiperf-dev / libiperf0');
}