CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS
Percentile
99.2%
According to its self-reported version number, the remote installation of BIND is potentially affected by a denial of service vulnerability. If BIND queries a domain with large RRSIG resource record sets it may trigger an assertion failure and cause the name server process to crash due to an off-by-one error in a buffer size check.
Note that Nessus has only relied on the version itself and has not attempted to determine whether or not the install is actually vulnerable.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(54923);
script_version("1.4");
script_cvs_date("Date: 2018/06/27 18:42:25");
script_cve_id("CVE-2011-1910");
script_bugtraq_id(48007);
script_xref(name:"CERT", value:"795694");
script_xref(name:"Secunia", value:"44719");
script_name(english:"ISC BIND 9 Large RRSIG RRsets Negative Caching Remote DoS");
script_summary(english:"Checks version of BIND");
script_set_attribute(attribute:"synopsis", value:
"The remote name server may be affected by a denial of service
vulnerability.");
script_set_attribute(attribute:"description", value:
"According to its self-reported version number, the remote
installation of BIND is potentially affected by a denial of service
vulnerability. If BIND queries a domain with large RRSIG resource
record sets it may trigger an assertion failure and cause the name
server process to crash due to an off-by-one error in a buffer size
check.
Note that Nessus has only relied on the version itself and has not
attempted to determine whether or not the install is actually
vulnerable.");
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f9dd6d57");
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?ba92a18e");
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d9a0b3f1");
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c270545b");
script_set_attribute(attribute:"see_also", value:"https://www.isc.org/software/bind/advisories/cve-2011-1910");
script_set_attribute(attribute:"solution", value:
"Upgrade to BIND 9.4-ESV-R4-P1 / 9.6-ESV-R4-P1 / 9.7.3-P1 / 9.8.0-P2
or later.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2011/05/27");
script_set_attribute(attribute:"patch_publication_date", value:"2011/05/27");
script_set_attribute(attribute:"plugin_publication_date", value:"2011/05/31");
script_set_attribute(attribute:"cpe", value:"cpe:/a:isc:bind");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"DNS");
script_copyright(english:"This script is Copyright (C) 2011-2018 Tenable Network Security, Inc.");
script_dependencies("bind_version.nasl");
script_require_keys("bind/version", "Settings/ParanoidReport");
exit(0);
}
include("global_settings.inc");
include("misc_func.inc");
if (report_paranoia < 2)
exit(1, "This plugin only runs if 'Report paranoia' is set to 'Paranoid'.");
ver = get_kb_item_or_exit("bind/version");
# Check whether BIND is vulnerable, and recommend an upgrade.
fix = NULL;
if (ver =~ "9\.4-ESV-R(3|4$)")
fix = "9.4-ESV-R4-P1";
else if (ver =~ "9\.6-ESV-R([2-3]|4$)")
fix = "9.6-ESV-R4-P1";
else if (ver =~ "9\.6\.3")
fix = "9.6-ESV-R4-P1";
else if (ver =~ "9\.7\.([1-2]|3$)")
fix = "9.7.3-P1";
else if (ver =~ "^9\.8\.0($|-P1)")
fix = "9.8.0-P2";
if (isnull(fix))
exit(0, "BIND version " + ver + " is running on UDP port 53 and thus is not affected.");
if (report_verbosity > 0)
{
report =
'\n Installed version : ' + ver +
'\n Fixed version : ' + fix +
'\n';
security_hole(port:53, proto:"udp", extra:report);
} else security_hole(port:53, proto:"udp");