Debian dla-4740 : libecpg-compat3 - security update

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-4740. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(335430);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/14");

  script_cve_id(
    "CVE-2025-8714",
    "CVE-2026-6464",
    "CVE-2026-6469",
    "CVE-2026-6470",
    "CVE-2026-6471",
    "CVE-2026-6473",
    "CVE-2026-14662",
    "CVE-2026-14663",
    "CVE-2026-14664",
    "CVE-2026-14666",
    "CVE-2026-14668",
    "CVE-2026-14669",
    "CVE-2026-14670",
    "CVE-2026-14671",
    "CVE-2026-14673",
    "CVE-2026-14677",
    "CVE-2026-14678",
    "CVE-2026-14679",
    "CVE-2026-14680",
    "CVE-2026-15741",
    "CVE-2026-15742",
    "CVE-2026-16239",
    "CVE-2026-16241",
    "CVE-2026-18024",
    "CVE-2026-18408",
    "CVE-2026-19385"
  );

  script_name(english:"Debian dla-4740 : libecpg-compat3 - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-4740 advisory.

    -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4740-1                [email protected]
    https://www.debian.org/lts/security/          Carlos Henrique Lima Melara
    August 14, 2026                               https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : postgresql-15
    Version        : 15.19-0+deb12u1
    CVE ID         : CVE-2025-8714 CVE-2026-6464 CVE-2026-6469 CVE-2026-6470
                     CVE-2026-6471 CVE-2026-6473 CVE-2026-14662 CVE-2026-14663
                     CVE-2026-14664 CVE-2026-14666 CVE-2026-14668 CVE-2026-14669
                     CVE-2026-14670 CVE-2026-14671 CVE-2026-14673 CVE-2026-14677
                     CVE-2026-14678 CVE-2026-14679 CVE-2026-14680 CVE-2026-15741
                     CVE-2026-15742 CVE-2026-16239 CVE-2026-16241 CVE-2026-18024
                     CVE-2026-18408 CVE-2026-19385

    Multiple security issues were discovered in PostgreSQL, which may
    result in execution of arbitrary code, incorrect authentication,
    information disclosure, or privilege escalation.

    The upstream fix to address CVE-2026-6471 requires additional
    changes to the configuration if some extensions are used. This
    affects the postgresql-15-wal2json and postgresql-15-decoderbufs
    extensions included in Debian. Quoting from the changelog:

    | Restrict logical decoding output plugins to the set specified by
    | a new server parameter `output_plugin_libraries` (Jacob
    | Champion)
    | Previously, a replication user could select any loadable library
    |
    | Restrict logical decoding output plugins to the set specified by
    | a new server parameter `output_plugin_libraries` (Jacob
    | Champion)
    | Previously, a replication user could select any loadable library
    | for logical decoding, allowing exploits of various sorts. To
    | allow locking this down without breaking setups that worked
    | before, introduce a whitelist of allowed output plugins.
    |
    | By default, only the output plugins shipped as part of
    | PostgreSQL (`pgoutput` and `test_decoding`) are included in
    |`output_plugin_libraries`. Installations that rely on other
    | output plugins must add them after updating the server, for
    | example
    |
    | output_plugin_libraries = 'pgoutput, test_decoding, my_trusted_decoder'

    For Debian 12 bookworm, these problems have been fixed in version
    15.19-0+deb12u1.

    We recommend that you upgrade your postgresql-15 packages.

    For the detailed security status of postgresql-15 please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/postgresql-15

    Further information about Debian LTS security advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://wiki.debian.org/LTS
    Attachment:
    signature.asc
    Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://security-tracker.debian.org/tracker/source-package/postgresql-15
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?cd66bce3");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-8714");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-14662");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-14663");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-14664");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-14666");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-14668");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-14669");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-14670");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-14671");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-14673");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-14677");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-14678");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-14679");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-14680");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-15741");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-15742");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-16239");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-16241");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-18024");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-18408");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-19385");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-6464");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-6469");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-6470");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-6471");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-6473");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bookworm/postgresql-15");
  script_set_attribute(attribute:"solution", value:
"Upgrade the libecpg-compat3 packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/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:"cvss_score_source", value:"CVE-2026-18408");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2026-6473");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/08/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libecpg-compat3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libecpg-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libecpg6");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpgtypes3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpq-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpq5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:postgresql-15");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:postgresql-client-15");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:postgresql-doc-15");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:postgresql-plperl-15");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:postgresql-plpython3-15");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:postgresql-pltcl-15");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:postgresql-server-dev-15");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:12.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Debian 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_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}

include('debian_package.inc');

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);

var debian_release = get_kb_item('Host/Debian/release');
if ( isnull(debian_release) ) audit(AUDIT_OS_NOT, 'Debian');
debian_release = chomp(debian_release);
if (! preg(pattern:"^(12)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 12.0', 'Debian ' + debian_release);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Debian', cpu);

var pkgs = [
    {'release': '12.0', 'prefix': 'libecpg-compat3', 'reference': '15.19-0+deb12u1'},
    {'release': '12.0', 'prefix': 'libecpg-dev', 'reference': '15.19-0+deb12u1'},
    {'release': '12.0', 'prefix': 'libecpg6', 'reference': '15.19-0+deb12u1'},
    {'release': '12.0', 'prefix': 'libpgtypes3', 'reference': '15.19-0+deb12u1'},
    {'release': '12.0', 'prefix': 'libpq-dev', 'reference': '15.19-0+deb12u1'},
    {'release': '12.0', 'prefix': 'libpq5', 'reference': '15.19-0+deb12u1'},
    {'release': '12.0', 'prefix': 'postgresql-15', 'reference': '15.19-0+deb12u1'},
    {'release': '12.0', 'prefix': 'postgresql-client-15', 'reference': '15.19-0+deb12u1'},
    {'release': '12.0', 'prefix': 'postgresql-doc-15', 'reference': '15.19-0+deb12u1'},
    {'release': '12.0', 'prefix': 'postgresql-plperl-15', 'reference': '15.19-0+deb12u1'},
    {'release': '12.0', 'prefix': 'postgresql-plpython3-15', 'reference': '15.19-0+deb12u1'},
    {'release': '12.0', 'prefix': 'postgresql-pltcl-15', 'reference': '15.19-0+deb12u1'},
    {'release': '12.0', 'prefix': 'postgresql-server-dev-15', 'reference': '15.19-0+deb12u1'}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var _release = NULL;
  var prefix = NULL;
  var reference = NULL;
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (_release && prefix && reference) {
    if (deb_check(release:_release, prefix:prefix, reference:reference)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : deb_report_get()
  );
  exit(0);
}
else
{
  var tested = deb_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libecpg-compat3 / libecpg-dev / libecpg6 / libpgtypes3 / libpq-dev / etc');
}