Mercurial Multiple Vulnerabilities - Windows

# SPDX-FileCopyrightText: 2018 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:mercurial:mercurial";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.814059");
  script_version("2025-09-19T15:40:40+0000");
  script_tag(name:"last_modification", value:"2025-09-19 15:40:40 +0000 (Fri, 19 Sep 2025)");
  script_tag(name:"creation_date", value:"2018-09-28 15:46:56 +0530 (Fri, 28 Sep 2018)");
  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:"2020-07-31 13:15:00 +0000 (Fri, 31 Jul 2020)");

  script_cve_id("CVE-2018-13346", "CVE-2018-13347", "CVE-2018-13348");

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

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

  script_name("Mercurial Multiple Vulnerabilities - Windows");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2018 Greenbone AG");
  script_family("General");
  script_dependencies("gb_mercurial_detect_win.nasl");
  script_mandatory_keys("Mercurial/Win/Installed");

  script_tag(name:"summary", value:"Mercurial is prone to multiple vulnerabilities.");

  script_tag(name:"insight", value:"Multiple flaws are due to:

  - The mpatch_decode function in mpatch.c mishandles certain situations
    where there should be at least 12 bytes remaining after the current position
    in the patch data, but actually are not.

  - The mpatch_apply function in mpatch.c incorrectly proceeds in cases where the
    fragment start is past the end of the original data.

  - The mpatch.c mishandles integer addition and subtraction.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is
  present on the target host.");

  script_tag(name:"affected", value:"Mercurial before version 4.6.1");

  script_tag(name:"solution", value:"Upgrade to Mercurial 4.6.1 or later. Please see the references for more information.");

  script_xref(name:"URL", value:"https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.6.1_.282018-06-06.29");
  script_xref(name:"URL", value:"https://www.mercurial-scm.org");
  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);
mrVer = infos["version"];
mrPath = infos["location"];

if(version_is_less(version:mrVer, test_version:"4.6.1"))
{
  report = report_fixed_ver(installed_version:mrVer, fixed_version:"4.6.1", install_path:mrPath);
  security_message(data: report);
  exit(0);
}
exit(99);