AlmaLinux 9.2 [TuxCare] Security Update: gimp / gimp-devel / gimp-devel-tools / gimp-libs Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1791539516)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(364437);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/09");

  script_cve_id(
    "CVE-2026-90947",
    "CVE-2026-90948",
    "CVE-2026-92248",
    "CVE-2026-97185"
  );
  script_xref(name:"CLSA", value:"2026:1791539516");

  script_name(english:"AlmaLinux 9.2 [TuxCare] Security Update: gimp / gimp-devel / gimp-devel-tools / gimp-libs Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1791539516)");

  script_set_attribute(attribute:"synopsis", value:
"The AlmaLinux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare
ALMALINUX9.2:CLSA-2026:1791539516 advisory.

  - A flaw was found in GIMP. When processing a specially crafted lighting preset file, the Lighting Effects
    filter does not properly validate the number of light sources. This can lead to an out-of-bounds write,
    corrupting memory. An attacker could exploit this by convincing a user to open a malicious preset file,
    potentially causing a crash or enabling arbitrary code execution. (CVE-2026-90947)

  - A flaw was found in GIMP's ICO file loader. When processing an ICO file containing an embedded PNG image,
    an integer overflow can occur during the calculation of the required buffer size. This leads to an
    undersized buffer being allocated, causing a heap-based buffer overflow when the decoded pixel data is
    written. A remote attacker could exploit this by crafting a malicious ICO file, which, when opened, could
    lead to arbitrary code execution or a crash. (CVE-2026-90948)

  - A flaw was found in the file-psd plugin in GIMP. When generating a thumbnail preview for a specially
    crafted PSD (Photoshop Document) image file, an integer overflow occurs during the multiplication of
    values from an embedded JPEG header. This leads to an undersized heap allocation, resulting in a heap-
    based buffer overflow when the image data is decoded. This buffer overflow corrupts adjacent heap objects,
    allowing for a controlled memory write that can result in an application crash or arbitrary code
    execution. (CVE-2026-92248)

  - A flaw was found in GIMP. When processing a specially crafted GIMPressionist preset file, the plug-in does
    not properly validate vector indices before writing into fixed-size arrays. This can lead to an out-of-
    bounds write, corrupting memory. An attacker could exploit this by convincing a user to load a malicious
    preset file, potentially causing a crash or enabling arbitrary code execution. (CVE-2026-97185)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://security.tuxcare.com/csaf/v2/els_os/almalinux9.2esu/advisories/2026/clsa-2026_1791539516.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?35270867");
  script_set_attribute(attribute:"see_also", value:"https://cve.tuxcare.com/els/releases/CLSA-2026:1791539516");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages based on the guidance in TuxCare advisory ALMALINUX9.2:CLSA-2026:1791539516.");
  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:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-97185");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/09/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/09");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl");
  script_require_keys("Host/OS/extended-third-party", "Host/local_checks_enabled", "Host/AlmaLinux/release", "Host/AlmaLinux/rpm-list", "Host/cpu");

  exit(0);
}
include('rpm2.inc');

var third_party_support = get_kb_item('Host/OS/extended-third-party');
if (empty_or_null(third_party_support) || third_party_support != 'TuxCare') exit(0, 'TuxCare support not enabled.');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_product = get_kb_item('installed_os/local/SSH/0/product');
if (isnull(os_product) || 'AlmaLinux' >!< os_product) audit(AUDIT_OS_NOT, 'AlmaLinux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'AlmaLinux');
if (! preg(pattern:"^9.2([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'AlmaLinux 9.2', 'AlmaLinux ' + os_version);

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

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


var constraints = [
  {
    'release': '9',
    'sp': '2',
    'pkgs': [
      {'reference':'gimp-2.99.8-4.el9.2.tuxcare.els22', 'sp':'2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2'},
      {'reference':'gimp-2.99.8-4.el9.2.tuxcare.els22', 'sp':'2', 'cpu':'i686', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2'},
      {'reference':'gimp-2.99.8-4.el9.2.tuxcare.els22', 'sp':'2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2'},
      {'reference':'gimp-devel-2.99.8-4.el9.2.tuxcare.els22', 'sp':'2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2'},
      {'reference':'gimp-devel-2.99.8-4.el9.2.tuxcare.els22', 'sp':'2', 'cpu':'i686', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2'},
      {'reference':'gimp-devel-2.99.8-4.el9.2.tuxcare.els22', 'sp':'2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2'},
      {'reference':'gimp-devel-tools-2.99.8-4.el9.2.tuxcare.els22', 'sp':'2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2'},
      {'reference':'gimp-devel-tools-2.99.8-4.el9.2.tuxcare.els22', 'sp':'2', 'cpu':'i686', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2'},
      {'reference':'gimp-devel-tools-2.99.8-4.el9.2.tuxcare.els22', 'sp':'2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2'},
      {'reference':'gimp-libs-2.99.8-4.el9.2.tuxcare.els22', 'sp':'2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2'},
      {'reference':'gimp-libs-2.99.8-4.el9.2.tuxcare.els22', 'sp':'2', 'cpu':'i686', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2'},
      {'reference':'gimp-libs-2.99.8-4.el9.2.tuxcare.els22', 'sp':'2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2'}
    ]
  }
];

var os_release = get_one_kb_item('installed_os/local/SSH/0/release');
var os_sp = get_one_kb_item('Host/*/minor_release');

var flag = 0;
var reference;
var sp;
var _cpu;
var el_string;
var rpm_spec_vers_cmp;
var epoch;
var allowmaj;
var exists_check;
var cves;
foreach var constraint ( constraints ) {
  # Check that the target release is equal to the affected release
  if (!empty_or_null(constraint['release'])){
    if (constraint['release'] != os_release) continue;
  }
  if (!empty_or_null(constraint['sp'])){
    if (constraint['sp'] != os_sp) continue;
  }
  foreach var pkg ( constraint['pkgs'] ) {
    reference = NULL;
    sp = NULL;
    _cpu = NULL;
    el_string = NULL;
    rpm_spec_vers_cmp = NULL;
    epoch = NULL;
    allowmaj = NULL;
    exists_check = NULL;
    cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    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 &&
        ## (no known rpm to check OR known rpm_exists)
        (!exists_check || rpm_exists(rpm:exists_check)) &&
        rpm_check(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, 'gimp / gimp-devel / gimp-devel-tools / gimp-libs');
}