SQLite < 3.53.2 Multiple Heap Buffer Overflows

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

include('compat.inc');

if (description)
{
  script_id(321188);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/17");

  script_cve_id("CVE-2026-11822", "CVE-2026-11824");

  script_name(english:"SQLite < 3.53.2 Multiple Heap Buffer Overflows");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of SQLite installed on the remote host is prior to 3.53.2. It is, therefore,
affected by multiple vulnerabilities:

  - A heap-based buffer overflow vulnerability in the FTS5 full-text search extension
    allows attackers to cause a crash or execute arbitrary code by supplying a crafted
    database with malicious continuation page metadata specifying a szLeaf value smaller
    than 4. An integer underflow in fts5ChunkIterate() causes an inflated remaining byte
    count during FTS5 MATCH query processing, leading to a heap buffer overflow of
    attacker-controlled data. (CVE-2026-11824)

  - Memory corruption vulnerabilities in the FTS5 full-text search extension allow
    attackers to cause process crashes, memory exhaustion, or arbitrary code execution by
    supplying a crafted database with malformed FTS5 page data. An out-of-bounds read in
    fts5LeafSeek() via an attacker-controlled loop bound and a heap buffer overflow write
    in fts5ChunkIterate() through a crafted continuation page causing an integer underflow
    are exploitable when an FTS5 MATCH query is executed against the malicious database.
    (CVE-2026-11822)

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://sqlite.org/releaselog/3_53_2.html");
  # https://www.vulncheck.com/advisories/sqlite-before-heap-buffer-overflow-via-fts5-fts5chunkiterate
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f0efb87b");
  # https://www.vulncheck.com/advisories/sqlite-before-memory-corruption-in-fts5-extension
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?87860ce9");
  script_set_attribute(attribute:"solution", value:
"Upgrade to SQLite 3.53.2 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:"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:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-11824");

  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:"2026/06/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:sqlite:sqlite");
  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("sqlite_nix_installed.nbin", "sqlite_win_installed.nbin");
  script_require_keys("installed_sw/SQLite");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'SQLite', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'fixed_version': '3.53.2'}
      ]
    }
  ]
};

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