Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 24.04 LTS / 26.04 LTS : OpenImageIO vulnerabilities (USN-8438-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-8438-1. 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(321364);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/17");

  script_cve_id(
    "CVE-2026-43903",
    "CVE-2026-43904",
    "CVE-2026-43906",
    "CVE-2026-43907",
    "CVE-2026-43908",
    "CVE-2026-43909"
  );
  script_xref(name:"USN", value:"8438-1");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 24.04 LTS / 26.04 LTS : OpenImageIO vulnerabilities (USN-8438-1)");

  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 16.04 LTS / 18.04 LTS / 20.04 LTS / 24.04 LTS / 26.04 LTS host has packages installed that are
affected by multiple vulnerabilities as referenced in the USN-8438-1 advisory.

    It was discovered that OpenImageIO incorrectly performed bounds checking when processing SGI files. An
    attacker could possibly use this issue to cause a denial of service or execute arbitrary code.
    (CVE-2026-43903)

    It was discovered that OpenImageIO incorrectly handled run-length encoding when processing Softimage PIC
    files. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code.
    (CVE-2026-43904)

    It was discovered that OpenImageIO incorrectly validated subimage metadata when processing HEIF files. An
    attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue
    only affected Ubuntu 20.04 LTS, Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-43906)

    It was discovered that OpenImageIO contained multiple integer overflow vulnerabilities when processing DPX
    files. An attacker could possibly use these issues to cause a denial of service or execute arbitrary code.
    (CVE-2026-43907, CVE-2026-43908, CVE-2026-43909)

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-8438-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:P");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-43906");

  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:"2026/05/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/17");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  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:24.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:26.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libopenimageio-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libopenimageio1.6");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libopenimageio1.7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libopenimageio2.1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libopenimageio2.4t64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libopenimageio2.5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openimageio-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python-openimageio");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3-openimageio");
  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 (! ('16.04' >< os_release || '18.04' >< os_release || '20.04' >< os_release || '24.04' >< os_release || '26.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04 / 18.04 / 20.04 / 24.04 / 26.04', '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': '16.04', 'pkgname': 'libopenimageio-dev', 'pkgver': '1.6.11~dfsg0-1ubuntu1+esm2', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']},
    {'osver': '16.04', 'pkgname': 'libopenimageio1.6', 'pkgver': '1.6.11~dfsg0-1ubuntu1+esm2', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']},
    {'osver': '16.04', 'pkgname': 'openimageio-tools', 'pkgver': '1.6.11~dfsg0-1ubuntu1+esm2', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']},
    {'osver': '16.04', 'pkgname': 'python-openimageio', 'pkgver': '1.6.11~dfsg0-1ubuntu1+esm2', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']},
    {'osver': '18.04', 'pkgname': 'libopenimageio-dev', 'pkgver': '1.7.17~dfsg0-1ubuntu2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']},
    {'osver': '18.04', 'pkgname': 'libopenimageio1.7', 'pkgver': '1.7.17~dfsg0-1ubuntu2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']},
    {'osver': '18.04', 'pkgname': 'openimageio-tools', 'pkgver': '1.7.17~dfsg0-1ubuntu2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']},
    {'osver': '18.04', 'pkgname': 'python-openimageio', 'pkgver': '1.7.17~dfsg0-1ubuntu2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']},
    {'osver': '20.04', 'pkgname': 'libopenimageio-dev', 'pkgver': '2.1.12.0~dfsg0-1ubuntu0.1~esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43906', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']},
    {'osver': '20.04', 'pkgname': 'libopenimageio2.1', 'pkgver': '2.1.12.0~dfsg0-1ubuntu0.1~esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43906', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']},
    {'osver': '20.04', 'pkgname': 'openimageio-tools', 'pkgver': '2.1.12.0~dfsg0-1ubuntu0.1~esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43906', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']},
    {'osver': '20.04', 'pkgname': 'python3-openimageio', 'pkgver': '2.1.12.0~dfsg0-1ubuntu0.1~esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43906', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']},
    {'osver': '24.04', 'pkgname': 'libopenimageio-dev', 'pkgver': '2.4.17.0+dfsg-1.1ubuntu0.1~esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43906', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']},
    {'osver': '24.04', 'pkgname': 'libopenimageio2.4t64', 'pkgver': '2.4.17.0+dfsg-1.1ubuntu0.1~esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43906', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']},
    {'osver': '24.04', 'pkgname': 'openimageio-tools', 'pkgver': '2.4.17.0+dfsg-1.1ubuntu0.1~esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43906', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']},
    {'osver': '24.04', 'pkgname': 'python3-openimageio', 'pkgver': '2.4.17.0+dfsg-1.1ubuntu0.1~esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43906', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']},
    {'osver': '26.04', 'pkgname': 'libopenimageio-dev', 'pkgver': '2.5.19.1+dfsg-2ubuntu0.1~esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43906', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']},
    {'osver': '26.04', 'pkgname': 'libopenimageio2.5', 'pkgver': '2.5.19.1+dfsg-2ubuntu0.1~esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43906', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']},
    {'osver': '26.04', 'pkgname': 'openimageio-tools', 'pkgver': '2.5.19.1+dfsg-2ubuntu0.1~esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43906', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']},
    {'osver': '26.04', 'pkgname': 'python3-openimageio', 'pkgver': '2.5.19.1+dfsg-2ubuntu0.1~esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-43903', 'CVE-2026-43904', 'CVE-2026-43906', 'CVE-2026-43907', 'CVE-2026-43908', 'CVE-2026-43909']}
];

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, 'libopenimageio-dev / libopenimageio1.6 / libopenimageio1.7 / etc');
}