10 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
8 High
AI Score
Confidence
High
0.971 High
EPSS
Percentile
99.8%
ScreenOS is vulnerable to an unauthorized remote administrative access to the device over SSH or telnet and to unauthorized decrypting of VPN traffic
# SPDX-FileCopyrightText: 2015 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:juniper:screenos";
if (description)
{
script_oid("1.3.6.1.4.1.25623.1.0.105494");
script_cve_id("CVE-2015-7755", "CVE-2015-7754", "CVE-2015-7756");
script_tag(name:"cvss_base", value:"10.0");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:C/I:C/A:C");
script_version("2023-11-02T05:05:26+0000");
script_name("Multiple Security issues with ScreenOS (JSA10713)");
script_xref(name:"URL", value:"http://kb.juniper.net/index?page=content&id=JSA10713&actp=RSS");
script_xref(name:"URL", value:"http://kb.juniper.net/index?page=content&id=JSA10712&actp=RSS");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"The first issue allows unauthorized remote administrative access to the device over SSH or telnet. Exploitation of this vulnerability can lead to complete compromise
of the affected system. The second issue may allow a knowledgeable attacker who can monitor VPN traffic to decrypt that traffic. It is independent of the first issue.
The third issue may result in a system crash during a crafted SSH negotiation when ssh-pka is configured and enabled on the firewall. In the worst case scenario, the unhandled SSH exception resulting
in a system crash could lead to remote code execution. This issue can affect any product or platform running ScreenOS 6.3.0r20.
In February 2018 it was discovered that this vulnerability is being exploited by the 'DoubleDoor' Internet of Things
(IoT) Botnet.");
script_tag(name:"solution", value:"This issue was fixed in ScreenOS 6.2.0r19, 6.3.0r21, and all subsequent releases.");
script_tag(name:"summary", value:"ScreenOS is vulnerable to an unauthorized remote administrative access to the device over SSH or telnet and to unauthorized decrypting of VPN traffic");
script_tag(name:"affected", value:"These issues can affect any product or platform running ScreenOS 6.2.0r15 through 6.2.0r18 and 6.3.0r12 through 6.3.0r20.");
script_tag(name:"solution_type", value:"VendorFix");
script_tag(name:"qod_type", value:"package");
script_tag(name:"last_modification", value:"2023-11-02 05:05:26 +0000 (Thu, 02 Nov 2023)");
script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:H/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:"2016-12-07 18:25:00 +0000 (Wed, 07 Dec 2016)");
script_tag(name:"creation_date", value:"2015-12-18 09:58:55 +0100 (Fri, 18 Dec 2015)");
script_category(ACT_GATHER_INFO);
script_family("General");
script_copyright("Copyright (C) 2015 Greenbone AG");
script_dependencies("gb_screenos_version.nasl");
script_mandatory_keys("ScreenOS/version");
exit(0);
}
include("host_details.inc");
include("version_func.inc");
if( ! version = get_app_version( cpe:CPE ) ) exit( 0 );
display_version = version;
version = str_replace( string:version, find:"r", replace:"." );
version = str_replace( string:version, find:"-", replace:"." );
if( version =~ '^6\\.2\\.0' )
{
if( version_is_less( version:version, test_version:"6.2.0.15" ) ) exit( 99 );
display_fix = '6.2.0r19';
fix = '6.2.0.19';
}
else if( version =~ '^6\\.3\\.0' )
{
if( version_is_less( version:version, test_version:"6.3.0.12" ) ) exit( 99 );
display_fix = '6.3.0r21';
fix = '6.3.0.21';
# Additionally, earlier affected releases of ScreenOS 6.3.0 have been respun to resolve these issues.
# Fixes are included in: 6.3.0r12b, 6.3.0r13b, 6.3.0r14b, 6.3.0r15b, 6.3.0r16b, 6.3.0r17b, 6.3.0r18b, 6.3.0r19b.
patched = make_list( "6.3.0r12b", "6.3.0r13b", "6.3.0r14b", "6.3.0r15b", "6.3.0r16b", "6.3.0r17b", "6.3.0r18b", "6.3.0r19b");
foreach p ( patched )
if( display_version =~ '^' + p ) exit( 99 );
}
if( ! fix ) exit( 99 );
if( version_is_less( version:version, test_version:fix ) )
{
report = 'Installed version: ' + display_version + '\n' +
'Fixed version: ' + display_fix + '\n';
security_message( port:0, data:report );
exit( 0 );
}
exit( 99 );
10 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
8 High
AI Score
Confidence
High
0.971 High
EPSS
Percentile
99.8%