Redis 6.0.x < 6.0.13, 6.2.x < 6.2.3 Integer Overflow Vulnerability (GHSA-vqxj-26vj-996g)

# SPDX-FileCopyrightText: 2021 Greenbone AG
# 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-only

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

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.145888");
  script_version("2025-10-10T05:39:02+0000");
  script_tag(name:"last_modification", value:"2025-10-10 05:39:02 +0000 (Fri, 10 Oct 2025)");
  script_tag(name:"creation_date", value:"2021-05-05 03:06:53 +0000 (Wed, 05 May 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:"2021-07-09 09:15:00 +0000 (Fri, 09 Jul 2021)");

  script_cve_id("CVE-2021-29477");

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

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

  script_name("Redis 6.0.x < 6.0.13, 6.2.x < 6.2.3 Integer Overflow Vulnerability (GHSA-vqxj-26vj-996g)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 Greenbone AG");
  script_family("Databases");
  script_dependencies("gb_redis_tcp_detect.nasl");
  script_mandatory_keys("redis/detected");

  script_tag(name:"summary", value:"Redis is prone to an integer overflow vulnerability.");

  script_tag(name:"insight", value:"An integer overflow bug in Redis version 6.0 or newer could be
  exploited using the STRALGO LCS command to corrupt the heap and potentially result with remote
  code execution.");

  script_tag(name:"affected", value:"Redis version 6.0.x through 6.0.12 and 6.2.x through 6.2.2.");

  script_tag(name:"solution", value:"Update to version 6.0.13, 6.2.3 or later.");

  script_xref(name:"URL", value:"https://github.com/redis/redis/security/advisories/GHSA-vqxj-26vj-996g");

  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: "6.0", test_version2: "6.0.12")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "6.0.13");
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "6.2", test_version2: "6.2.2")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "6.2.3");
  security_message(port: port, data: report);
  exit(0);
}

exit(99);