OpenSSL Alternative Chains Certificate Forgery Vulnerability (July 2015) Affecting Cisco Products (cisco-sa-20150710-openssl)

# SPDX-FileCopyrightText: 2016 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:/o:cisco:ios_xe";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.105682");
  script_cve_id("CVE-2015-1793");
  script_tag(name:"cvss_base", value:"6.4");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:N");
  script_version("2025-03-07T15:40:19+0000");

  script_name("OpenSSL Alternative Chains Certificate Forgery Vulnerability (July 2015) Affecting Cisco Products (cisco-sa-20150710-openssl)");

  script_xref(name:"URL", value:"http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150710-openssl");
  script_xref(name:"URL", value:"http://tools.cisco.com/security/center/viewAlert.x?alertId=39851");

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

  script_tag(name:"solution", value:"See the referenced vendor advisory for a solution.");
  script_tag(name:"summary", value:"On July 9, 2015, the OpenSSL Project released a security advisory detailing
  a vulnerability affecting applications that verify certificates, including SSL/Transport Layer Security
  (TLS)/Datagram Transport Layer Security (DTLS) clients and SSL/TLS/DTLS servers using client authentication.

  Multiple Cisco products incorporate a version of the OpenSSL package affected by this vulnerability that could
  allow an unauthenticated, remote attacker to cause certain checks on untrusted certificates to be bypassed,
  enabling the attacker to forge `trusted` certificates that could be used to conduct man-in-the-middle attacks.

  Cisco will release free software updates that address this vulnerability.

  Workarounds that mitigate this vulnerability may be available.");

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

  script_tag(name:"last_modification", value:"2025-03-07 15:40:19 +0000 (Fri, 07 Mar 2025)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-11-30 21:30:00 +0000 (Fri, 30 Nov 2018)");
  script_tag(name:"creation_date", value:"2016-05-10 10:59:16 +0200 (Tue, 10 May 2016)");
  script_category(ACT_GATHER_INFO);
  script_family("CISCO");
  script_copyright("Copyright (C) 2016 Greenbone AG");
  script_dependencies("gb_cisco_ios_xe_consolidation.nasl");
  script_mandatory_keys("cisco/ios_xe/detected");
  exit(0);
}

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

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

affected = make_list(
  '3.3.0S',
  '3.3.1S',
  '3.3.2S',
  '3.4.0S',
  '3.4.1S',
  '3.4.2S',
  '3.4.3S',
  '3.4.4S',
  '3.4.5S',
  '3.4.6S',
  '3.5.0S',
  '3.5.1S',
  '3.5.2S',
  '3.6.0S',
  '3.6.1S',
  '3.6.2S',
  '3.7.0S',
  '3.7.1S',
  '3.7.2S',
  '3.7.3S',
  '3.7.4S',
  '3.7.5S',
  '3.7.6S',
  '3.8.0S',
  '3.8.1S',
  '3.8.2S',
  '3.9.0S',
  '3.9.1S',
  '3.9.2S' );

foreach af ( affected )
{
  if( version == af )
  {
    report = report_fixed_ver( installed_version:version, fixed_version:"See advisory" );
    security_message( port:0, data:report );
    exit( 0 );
  }
}

exit( 99 );