CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
Percentile
77.9%
The remote host is using ProFTPD, a free FTP server for Unix and Linux.
According to its banner, the version of ProFTPD installed on the remote host is prior to 1.3.5b or 1.3.6x prior to 1.3.6rc2 and is affected by an issue in the mod_tls module, which might cause a weaker than intended Diffie-Hellman key to be used.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(106755);
script_version("1.2");
script_cvs_date("Date: 2019/11/08");
script_cve_id("CVE-2016-3125");
script_bugtraq_id(84327);
script_name(english:"ProFTPD < 1.3.5b / 1.3.6x < 1.3.6rc2 weak Diffie-Hellman key");
script_summary(english:"Checks version of ProFTPD.");
script_set_attribute(attribute:"synopsis", value:
"The remote FTP server is affected by a Denial of Service
vulnerability.");
script_set_attribute(attribute:"description", value:
"The remote host is using ProFTPD, a free FTP server for Unix and
Linux.
According to its banner, the version of ProFTPD installed on the
remote host is prior to 1.3.5b or 1.3.6x prior to 1.3.6rc2
and is affected by an issue in the mod_tls module, which
might cause a weaker than intended Diffie-Hellman key
to be used.");
script_set_attribute(attribute:"see_also", value:"http://bugs.proftpd.org/show_bug.cgi?id=4230");
script_set_attribute(attribute:"solution", value:
"Upgrade to ProFTPD version 1.3.5b / 1.3.6rc2 or later.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"vuln_publication_date", value:"2016/03/08");
script_set_attribute(attribute:"patch_publication_date", value:"2016/03/11");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/02/12");
script_set_attribute(attribute:"potential_vulnerability", value:"true");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/a:proftpd:proftpd");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"FTP");
script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ftp_overflow.nasl", "ftpserver_detect_type_nd_version.nasl");
script_require_keys("ftp/proftpd", "Settings/ParanoidReport");
script_require_ports("Services/ftp", 21);
exit(0);
}
include("audit.inc");
include("ftp_func.inc");
include("global_settings.inc");
if (report_paranoia < 2) audit(AUDIT_PARANOID);
port = get_ftp_port(default: 21, broken:TRUE);
app = "ProFTPD";
banner = get_ftp_banner(port:port);
if (!banner) audit(AUDIT_NO_BANNER, port);
if (app >!< banner) audit(AUDIT_NOT_DETECT, app, port);
matches = pregmatch(string:banner, pattern:"ProFTPD ([0-9a-z.]+) ");
if (isnull(matches)) audit(AUDIT_SERVICE_VER_FAIL, app, port);
version = matches[1];
if (version =~ '^1(\\.3)?$') audit(AUDIT_VER_NOT_GRANULAR, app, version);
if (
version =~ "^0($|\.)" ||
version =~ "^1\.[0-2]($|\.)" ||
version =~ "^1\.3\.[1234]($|[^0-9])" ||
version =~ "^1\.3\.5(rc[1-9]|a)?($|[^0-9b-z])" ||
version =~ "^1\.3\.6(rc1)?($|[^0-9a-z])"
)
{
report =
'\n Version source : ' + chomp(banner) +
'\n Installed version : ' + version +
'\n Fixed version : 1.3.5b / 1.3.6rc2\n';
security_report_v4(severity:SECURITY_WARNING, port:port, extra:report);
exit(0);
}
else audit(AUDIT_LISTEN_NOT_VULN, app, port, version);
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
Percentile
77.9%