CentOS Linux 8 [TuxCare] Security Update: ImageMagick / ImageMagick-c++ / ImageMagick-c++-devel / etc Multiple Vulnerabilities (CENTOS-STREAM8:CLSA-2026:1776257014)

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

include('compat.inc');

if (description)
{
  script_id(361208);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/01");

  script_cve_id(
    "CVE-2025-55154",
    "CVE-2025-55298",
    "CVE-2025-62171",
    "CVE-2025-68618",
    "CVE-2025-69204",
    "CVE-2026-23952",
    "CVE-2026-25796",
    "CVE-2026-25798",
    "CVE-2026-25965",
    "CVE-2026-25966",
    "CVE-2026-25970",
    "CVE-2026-25988",
    "CVE-2026-26283",
    "CVE-2026-27798",
    "CVE-2026-30883",
    "CVE-2026-32636"
  );
  script_xref(name:"CLSA", value:"2026:1776257014");

  script_name(english:"CentOS Linux 8 [TuxCare] Security Update: ImageMagick / ImageMagick-c++ / ImageMagick-c++-devel / etc Multiple Vulnerabilities (CENTOS-STREAM8:CLSA-2026:1776257014)");

  script_set_attribute(attribute:"synopsis", value:
"The CentOS Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the
TuxCare CENTOS-STREAM8:CLSA-2026:1776257014 advisory.

  - ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to
    ImageMagick versions 6.9.13-28 and 7.1.2-2, a format string bug vulnerability exists in
    InterpretImageFilename function where user input is directly passed to FormatLocaleString without proper
    sanitization. An attacker can overwrite arbitrary memory regions, enabling a wide range of attacks from
    heap overflow to remote code execution. This issue has been patched in versions 6.9.13-28 and 7.1.2-2.
    (CVE-2025-55298)

  - ImageMagick is an open source software suite for displaying, converting, and editing raster image files.
    In ImageMagick versions prior to 7.1.2-7 and 6.9.13-32, an integer overflow vulnerability exists in the
    BMP decoder on 32-bit systems. The vulnerability occurs in coders/bmp.c when calculating the extent value
    by multiplying image columns by bits per pixel. On 32-bit systems with size_t of 4 bytes, a malicious BMP
    file with specific dimensions can cause this multiplication to overflow and wrap to zero. The overflow
    check added to address CVE-2025-57803 is placed after the overflow occurs, making it ineffective. A
    specially crafted 58-byte BMP file with width set to 536,870,912 and 32 bits per pixel can trigger this
    overflow, causing the bytes_per_line calculation to become zero. This vulnerability only affects 32-bit
    builds of ImageMagick where default resource limits for width, height, and area have been manually
    increased beyond their defaults. 64-bit systems with size_t of 8 bytes are not vulnerable, and systems
    using default ImageMagick resource limits are not vulnerable. The vulnerability is fixed in versions
    7.1.2-7 and 6.9.13-32. (CVE-2025-62171)

  - ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to
    version 7.1.2-12, using Magick to read a malicious SVG file resulted in a DoS attack. Version 7.1.2-12
    fixes the issue. (CVE-2025-68618)

  - ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to
    version 7.1.2-12, in the WriteSVGImage function, using an int variable to store number_attributes caused
    an integer overflow. This, in turn, triggered a buffer overflow and caused a DoS attack. Version 7.1.2-12
    fixes the issue. (CVE-2025-69204)

  - ImageMagick is free and open-source software used for editing and manipulating digital images. Versions
    14.10.1 and below have a NULL pointer dereference vulnerability in the MSL (Magick Scripting Language)
    parser when processing <comment> tags before images are loaded. This can lead to DoS attack due to
    assertion failure (debug builds) or NULL pointer dereference (release builds). This issue is fixed in
    version 14.10.2. (CVE-2026-23952)

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/centos-stream8els/advisories/2026/clsa-2026_1776257014.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?8464d947");
  script_set_attribute(attribute:"see_also", value:"https://cve.tuxcare.com/els/releases/CLSA-2026:1776257014");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages based on the guidance in TuxCare advisory CENTOS-STREAM8:CLSA-2026:1776257014.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/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:L/UI:N/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:P/PR:N/UI:P/VC:N/VI:N/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-2025-55298");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2025-62171");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/08/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/04/15");
  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:"CentOS 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/CentOS/release", "Host/CentOS/rpm-list");

  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) || 'CentOS Linux' >!< os_product) audit(AUDIT_OS_NOT, 'CentOS Linux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'CentOS Linux');
if (! preg(pattern:"^8([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'CentOS Linux 8', 'CentOS Linux ' + os_version);

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

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'CentOS Linux', cpu);


var constraints = [
  {
    'release': '8',
    'pkgs': [
      {'reference':'ImageMagick-6.9.13.25-1.el8.tuxcare.els27', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ImageMagick-c++-6.9.13.25-1.el8.tuxcare.els27', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ImageMagick-c++-devel-6.9.13.25-1.el8.tuxcare.els27', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ImageMagick-devel-6.9.13.25-1.el8.tuxcare.els27', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ImageMagick-djvu-6.9.13.25-1.el8.tuxcare.els27', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ImageMagick-doc-6.9.13.25-1.el8.tuxcare.els27', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ImageMagick-libs-6.9.13.25-1.el8.tuxcare.els27', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ImageMagick-perl-6.9.13.25-1.el8.tuxcare.els27', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

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, 'ImageMagick / ImageMagick-c++ / ImageMagick-c++-devel / etc');
}