CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS
Percentile
99.7%
According to the firmware version collected via SNMP, the copy of dhclient-script included with the remote Apple Time Capsule / AirPort Express Base Station / AirPort Extreme Base Station reportedly fails to strip shell meta-characters in a hostname obtained from a DHCP response. A remote attacker might be able to leverage this vulnerability to execute arbitrary code on the affected device.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(56855);
script_version("1.10");
script_cvs_date("Date: 2018/11/15 20:50:23");
script_cve_id("CVE-2011-0997");
script_bugtraq_id(47176);
script_name(english:"Apple Time Capsule and AirPort Base Station (802.11n) Firmware < 7.6 (APPLE-SA-2011-11-10-2)");
script_summary(english:"Checks firmware version through SNMP");
script_set_attribute(
attribute:"synopsis",
value:
"The remote network device is affected by an arbitrary code execution
vulnerability."
);
script_set_attribute(
attribute:"description",
value:
"According to the firmware version collected via SNMP, the copy of
dhclient-script included with the remote Apple Time Capsule / AirPort
Express Base Station / AirPort Extreme Base Station reportedly fails
to strip shell meta-characters in a hostname obtained from a DHCP
response. A remote attacker might be able to leverage this
vulnerability to execute arbitrary code on the affected device."
);
script_set_attribute(
attribute:"see_also",
value:"https://support.apple.com/en-us/HT202347"
);
script_set_attribute(
attribute:"see_also",
value:"https://lists.apple.com/archives/security-announce/2011/Nov/msg00002.html"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.securityfocus.com/archive/1/520482/30/0/threaded"
);
script_set_attribute(attribute:"solution", value:"Upgrade the firmware to version 7.6 or later.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
script_set_attribute(attribute:"canvas_package", value:'CANVAS');
script_set_attribute(attribute:"vuln_publication_date", value:"2011/04/05");
script_set_attribute(attribute:"patch_publication_date", value:"2011/11/11");
script_set_attribute(attribute:"plugin_publication_date", value:"2011/11/16");
script_set_attribute(attribute:"plugin_type", value:"local");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Misc.");
script_copyright(english:"This script is Copyright (C) 2011-2018 Tenable Network Security, Inc.");
script_dependencies("snmp_airport_version.nasl");
script_require_keys("Host/Airport/Firmware", "SNMP/community");
exit(0);
}
include("global_settings.inc");
include("misc_func.inc");
version = get_kb_item_or_exit("Host/Airport/Firmware");
fixed_version = "7.6";
if (
ver_compare(ver:version, fix:"7.0.0", strict:FALSE) >= 0 &&
ver_compare(ver:version, fix:fixed_version, strict:FALSE) == -1
)
{
if (report_verbosity > 0)
{
report =
'\n Installed version : ' + version +
'\n Fixed version : ' + fixed_version + '\n';
security_hole(port:0, extra:report);
}
else security_hole(0);
}
else exit(0, "The host is not affected since it has firmware version " + version + " is installed.");