Redis Stack Overflow Vulnerability (GHSA-p486-xggp-782c)

# Copyright (C) 2021 Greenbone Networks GmbH
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

CPE = "cpe:/a:redis:redis";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.146847");
  script_version("2021-10-18T08:03:29+0000");
  script_tag(name:"last_modification", value:"2021-10-18 08:03:29 +0000 (Mon, 18 Oct 2021)");
  script_tag(name:"creation_date", value:"2021-10-06 12:40:22 +0000 (Wed, 06 Oct 2021)");
  script_tag(name:"cvss_base", value:"6.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-10-13 16:04:00 +0000 (Wed, 13 Oct 2021)");

  script_cve_id("CVE-2021-32626");

  script_tag(name:"qod_type", value:"remote_banner_unreliable");

  script_tag(name:"solution_type", value:"VendorFix");

  script_name("Redis Stack Overflow Vulnerability (GHSA-p486-xggp-782c)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 Greenbone Networks GmbH");
  script_family("Databases");
  script_dependencies("gb_redis_detect.nasl");
  script_mandatory_keys("redis/installed");

  script_tag(name:"summary", value:"Redis is prone to a heap-based stack overflow vulnerability.");

  script_tag(name:"insight", value:"Specially crafted Lua scripts executing in Redis can cause the
  heap-based Lua stack to be overflowed, due to incomplete checks for this condition. This can
  result with heap corruption and potentially remote code execution.");

  script_tag(name:"affected", value:"Redis version 2.6 and later.");

  script_tag(name:"solution", value:"Update to version 5.0.14, 6.0.16, 6.2.6 or later.");

  script_xref(name:"URL", value:"https://github.com/redis/redis/security/advisories/GHSA-p486-xggp-782c");

  exit(0);
}

include("host_details.inc");
include("version_func.inc");

if (!port = get_app_port(cpe: CPE))
  exit(0);

if (!version = get_app_version(cpe: CPE, port: port))
  exit(0);

if (version_in_range(version: version, test_version: "2.6", test_version2: "5.0.13")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "5.0.14");
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "6.0", test_version2: "6.0.15")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "6.0.16");
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "6.1", test_version2: "6.2.5")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "6.2.6");
  security_message(port: port, data: report);
  exit(0);
}

exit(99);