9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.2 High
AI Score
Confidence
Low
10 High
CVSS2
Access Vector
NETWORK
Access 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
0.043 Low
EPSS
Percentile
92.2%
The remote Raspberry Pi OS / Raspbian system is using known
default credentials for the SSH login.
# SPDX-FileCopyrightText: 2021 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
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.117815");
script_version("2023-12-20T05:05:58+0000");
script_cve_id("CVE-2021-38759");
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_tag(name:"last_modification", value:"2023-12-20 05:05:58 +0000 (Wed, 20 Dec 2023)");
script_tag(name:"severity_vector", value:"CVSS:3.1/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:"2021-12-10 14:17:00 +0000 (Fri, 10 Dec 2021)");
script_tag(name:"creation_date", value:"2021-12-09 07:53:21 +0000 (Thu, 09 Dec 2021)");
script_name("Raspberry Pi OS / Raspbian Default Credentials (SSH)");
script_category(ACT_ATTACK);
script_family("Default Accounts");
script_copyright("Copyright (C) 2021 Greenbone AG");
script_dependencies("ssh_detect.nasl", "gb_default_credentials_options.nasl", "os_detection.nasl");
script_require_ports("Services/ssh", 22);
# nb: No other mandatory key for the SSH server itself as there might be different SSH servers
# installed (OpenSSH, Dropbear, ...)
script_mandatory_keys("Host/runs_unixoide");
script_exclude_keys("default_credentials/disable_default_account_checks");
script_xref(name:"URL", value:"https://www.raspberrypi.com/documentation/computers/configuration.html#change-the-default-password");
script_xref(name:"URL", value:"https://www.cnvd.org.cn/flaw/show/CNVD-2021-43968");
script_tag(name:"summary", value:"The remote Raspberry Pi OS / Raspbian system is using known
default credentials for the SSH login.");
script_tag(name:"impact", value:"This issue may be exploited by a remote attacker to gain access
to sensitive information or modify system configuration.");
script_tag(name:"vuldetect", value:"Tries to login using the default credentials: 'pi:raspberry'.");
script_tag(name:"affected", value:"All Raspberry Pi OS / Raspbian systems using known default
credentials. Other systems might be affected as well.");
script_tag(name:"solution", value:"Change the default password.");
script_tag(name:"solution_type", value:"Mitigation");
script_tag(name:"qod_type", value:"remote_vul");
exit(0);
}
if( get_kb_item( "default_credentials/disable_default_account_checks" ) )
exit( 0 );
include("host_details.inc");
include("os_func.inc");
include("ssh_func.inc");
include("misc_func.inc");
include("port_service_func.inc");
port = ssh_get_port( default:22 );
if( ssh_dont_try_login( port:port ) )
exit( 0 );
# nb: No need to continue/start if we haven't received any banner...
if( ! ssh_get_serverbanner( port:port ) )
exit( 0 );
if( ! soc = open_sock_tcp( port ) )
exit( 0 );
username = "pi";
password = "raspberry";
login = ssh_login( socket:soc, login:username, password:password, priv:NULL, passphrase:NULL );
if( login == 0 ) {
files = traversal_files( "linux" );
foreach pattern( keys( files ) ) {
file = "/" + files[pattern];
cmd = ssh_cmd( socket:soc, cmd:"cat " + file );
if( egrep( string:cmd, pattern:pattern, icase:TRUE ) ) {
close( soc );
report = 'It was possible to login to the remote Raspberry Pi OS / Raspbian system via SSH with the following known credentials:\n';
report += '\nUsername: "' + username + '", Password: "' + password + '"\n';
report += 'and to execute `cat ' + file + '`. Result:\n\n' + cmd;
security_message( port:port, data:report );
exit( 0 );
}
}
}
close( soc );
exit( 99 );
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.2 High
AI Score
Confidence
Low
10 High
CVSS2
Access Vector
NETWORK
Access 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
0.043 Low
EPSS
Percentile
92.2%