Vim < 9.2.0077 Heap-based Buffer Overflow (GHSA-r2gw-2x48-jj5p)

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

include('compat.inc');

if (description)
{
  script_id(301510);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/30");

  script_cve_id("CVE-2026-28421");
  script_xref(name:"IAVA", value:"2026-A-0195-S");

  script_name(english:"Vim < 9.2.0077 Heap-based Buffer Overflow (GHSA-r2gw-2x48-jj5p)");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The version of Vim installed on the remote host is prior to 9.2.0077. It is, therefore, affected by a vulnerability as
referenced in the GHSA-r2gw-2x48-jj5p advisory.

  - Vim is an open source, command line text editor. Versions prior to 9.2.0077 have a heap-buffer-overflow 
    and a segmentation fault (SEGV) exist in Vim's swap file recovery logic. Both are caused by unvalidated 
    fields read from crafted pointer blocks within a swap file. Version 9.2.0077 fixes the issue. 
    (CVE-2026-28421)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://github.com/vim/vim/security/advisories/GHSA-r2gw-2x48-jj5p
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e741b6dc");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Vim version 9.2.0077 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  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-2026-28421");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/02/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/02/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/03/09");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:vim:vim");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

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

  script_dependencies("vim_win_installed.nbin", "vim_nix_installed.nbin");
  script_require_keys("installed_sw/Vim");
  script_exclude_keys("Host/MacOSX/Version");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'Vim', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints' : [
        { 'fixed_version' : '9.2.0077' }
      ]
    }
  ]
};

var vdf_result = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_HOLE);
vdf::handle_check_and_report_errors(vdf_result:vdf_result);