AlmaLinux 9.2 [TuxCare] Security Update: gimp / gimp-devel / gimp-devel-tools / gimp-libs Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1773683117)

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

include('compat.inc');

if (description)
{
  script_id(362248);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/02");

  script_cve_id(
    "CVE-2026-0797",
    "CVE-2026-2044",
    "CVE-2026-2045",
    "CVE-2026-2048"
  );
  script_xref(name:"CLSA", value:"2026:1773683117");

  script_name(english:"AlmaLinux 9.2 [TuxCare] Security Update: gimp / gimp-devel / gimp-devel-tools / gimp-libs Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1773683117)");

  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-2026:1773683117 advisory.

  - GIMP ICO File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability
    allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is
    required to exploit this vulnerability in that the target must visit a malicious page or open a malicious
    file. The specific flaw exists within the parsing of ICO files. The issue results from the lack of proper
    validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can
    leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28599.
    (CVE-2026-0797)

  - GIMP PGM File Parsing Uninitialized Memory Remote Code Execution Vulnerability. This vulnerability allows
    remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required
    to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The
    specific flaw exists within the parsing of PGM files. The issue results from the lack of proper
    initialization of memory prior to accessing it. An attacker can leverage this vulnerability to execute
    code in the context of the current process. Was ZDI-CAN-28158. (CVE-2026-2044)

  - GIMP XWD File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows
    remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required
    to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The
    specific flaw exists within the parsing of XWD files. The issue results from the lack of proper validation
    of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can
    leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28265.
    (CVE-2026-2045)

  - This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP.
    User interaction is required to exploit this vulnerability in that the target must visit a malicious page
    or open a malicious file.  The specific flaw exists within the parsing of XWD files. The issue results
    from the lack of proper validation of user-supplied data, which can result in a write past the end of an
    allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the
    current process. (CVE-2026-2045, CVE-2026-2048)

  - GIMP XWD File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows
    remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required
    to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The
    specific flaw exists within the parsing of XWD files. The issue results from the lack of proper validation
    of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can
    leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28591.
    (CVE-2026-2048)

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_1773683117.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c61fcd00");
  script_set_attribute(attribute:"see_also", value:"https://cve.tuxcare.com/els/releases/CLSA-2026:1773683117");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages based on the guidance in TuxCare advisory ALMALINUX9.2:CLSA-2026:1773683117.");
  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:N/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-2026-2048");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2026-2044");

  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:"2026/02/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/03/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/01");

  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 (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.els5', 'sp':'2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2'},
      {'reference':'gimp-devel-2.99.8-4.el9.2.tuxcare.els5', 'sp':'2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2'},
      {'reference':'gimp-devel-tools-2.99.8-4.el9.2.tuxcare.els5', 'sp':'2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2'},
      {'reference':'gimp-libs-2.99.8-4.el9.2.tuxcare.els5', 'sp':'2', 'cpu':'i686', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2'},
      {'reference':'gimp-libs-2.99.8-4.el9.2.tuxcare.els5', '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');
}