Irssi 1.1.x < 1.1.2 Use-After-Free Vulnerability

# SPDX-FileCopyrightText: 2019 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:irssi:irssi";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.112481");
  script_version("2025-09-16T05:38:45+0000");
  script_tag(name:"last_modification", value:"2025-09-16 05:38:45 +0000 (Tue, 16 Sep 2025)");
  script_tag(name:"creation_date", value:"2019-01-11 15:04:12 +0100 (Fri, 11 Jan 2019)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-02-26 17:20:00 +0000 (Tue, 26 Feb 2019)");

  script_cve_id("CVE-2019-5882");

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

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

  script_name("Irssi 1.1.x < 1.1.2 Use-After-Free Vulnerability");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2019 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_irssi_detect_lin.nasl");
  script_mandatory_keys("irssi/detected");

  script_tag(name:"summary", value:"Irssi is prone to a use-after-free vulnerability.");
  script_tag(name:"insight", value:"The vulnerability occurs when hidden lines were expired
  from the scroll buffer.");
  script_tag(name:"impact", value:"Exploiting this vulnerability may affect the stability of Irssi.");
  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
  script_tag(name:"affected", value:"Irssi 1.1.x before 1.1.2.");
  script_tag(name:"solution", value:"Update to version 1.1.2.");

  script_xref(name:"URL", value:"https://irssi.org/security/irssi_sa_2019_01.txt");
  script_xref(name:"URL", value:"https://github.com/irssi/irssi/pull/948");
  script_xref(name:"URL", value:"https://irssi.org/NEWS/#v1-1-2");

  exit(0);
}

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

if(!infos = get_app_version_and_location(cpe: CPE, exit_no_version: TRUE))
  exit(0);

vers = infos["version"];
path = infos["location"];

if(version_in_range(version: vers, test_version: "1.1.0", test_version2: "1.1.1")) {
  report = report_fixed_ver(installed_version: vers, fixed_version: "1.1.2", install_path: path);
  security_message(port: 0, data: report);
  exit(0);
}

exit(99);