6.4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:P/A:N
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.9 Medium
AI Score
Confidence
High
0.105 Low
EPSS
Percentile
95.0%
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.
# 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("2023-07-20T05:05:17+0000");
script_name("OpenSSL Alternative Chains Certificate Forgery Vulnerability (July 2015) Affecting Cisco Products");
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:"2023-07-20 05:05:17 +0000 (Thu, 20 Jul 2023)");
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 );
6.4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:P/A:N
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.9 Medium
AI Score
Confidence
High
0.105 Low
EPSS
Percentile
95.0%