Debian dla-4325 : redis - 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-4325. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(269808);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/18");

  script_cve_id("CVE-2025-46817", "CVE-2025-46819", "CVE-2025-49844");
  script_xref(name:"IAVA", value:"2025-A-0731-S");

  script_name(english:"Debian dla-4325 : redis - 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 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-4325 advisory.

    - -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4325-1                [email protected]
    https://www.debian.org/lts/security/                           Chris Lamb
    October 09, 2025                              https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : redis
    Version        : 5:6.0.16-1+deb11u8
    CVE IDs        : CVE-2025-46817 CVE-2025-46819 CVE-2025-49844
    Debian Bug     : 1117553

    Multiple vulnerabilities were discovered in Redis, a popular
    key/value database:

    * CVE-2025-46817: Fix an issue where an authenticated user could have
      used a specially-crafted Lua script to cause an integer overflow
      and potentially lead to remote code execution.

    * CVE-2025-46819: Address a potential vulnerability where an
      authenticated user could have used a specially-crafted Lua script
      to read out-of-bound data and/or crash the server and thereby
      create a denial of service attack.

    * CVE-2025-49844: Fix an issue where authenticated users could have
      exploited a specially-crafted Lua script to manipulate the garbage
      collector, trigger a use-after-free and potentially lead to remote
      code execution.

    For Debian 11 bullseye, these problems have been fixed in version
    5:6.0.16-1+deb11u8.

    We recommend that you upgrade your redis packages.

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

    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

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.");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/redis");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-46817");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-46819");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-49844");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/redis");
  script_set_attribute(attribute:"solution", value:
"Upgrade the redis 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:C/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-2025-46817");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2025-49844");

  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:"2025/10/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/10/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/10/09");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:redis");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:redis-sentinel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:redis-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:redis-tools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Debian Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2025 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:"^(11)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 11.0', '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': '11.0', 'prefix': 'redis', 'reference': '5:6.0.16-1+deb11u8'},
    {'release': '11.0', 'prefix': 'redis-sentinel', 'reference': '5:6.0.16-1+deb11u8'},
    {'release': '11.0', 'prefix': 'redis-server', 'reference': '5:6.0.16-1+deb11u8'},
    {'release': '11.0', 'prefix': 'redis-tools', 'reference': '5:6.0.16-1+deb11u8'}
];

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, 'redis / redis-sentinel / redis-server / redis-tools');
}