CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
EPSS
Percentile
99.6%
According to its self-reported version number, the installation of ISC BIND running on the remote name server is potentially affected by the following vulnerabilities :
A denial of service vulnerability exists due to an assertion flaw that is triggered when parsing malformed DNSSEC keys. An unauthenticated, remote attacker can exploit this, via a specially crafted query to a zone containing such a key, to cause a validating resolver to exit. (CVE-2015-5722)
A denial of service vulnerability exists in the fromwire_openpgpkey() function in openpgpkey_61.c that is triggered when the length of data is less than 1. An unauthenticated, remote attacker can exploit this, via a specially crafted response to a query, to cause an assertion failure that terminates named. (CVE-2015-5986)
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(85896);
script_version("1.6");
script_cvs_date("Date: 2018/06/27 18:42:25");
script_cve_id("CVE-2015-5722", "CVE-2015-5986");
script_name(english:"ISC BIND 9.0.x < 9.9.7-P3 / 9.10.x < 9.10.2-P4 Multiple DoS");
script_summary(english:"Checks the version of BIND.");
script_set_attribute(attribute:"synopsis", value:
"The remote name server is affected by multiple denial of service
vulnerabilities.");
script_set_attribute(attribute:"description", value:
"According to its self-reported version number, the installation of
ISC BIND running on the remote name server is potentially affected by
the following vulnerabilities :
- A denial of service vulnerability exists due to an
assertion flaw that is triggered when parsing malformed
DNSSEC keys. An unauthenticated, remote attacker can
exploit this, via a specially crafted query to a zone
containing such a key, to cause a validating resolver to
exit. (CVE-2015-5722)
- A denial of service vulnerability exists in the
fromwire_openpgpkey() function in openpgpkey_61.c that
is triggered when the length of data is less than 1. An
unauthenticated, remote attacker can exploit this, via a
specially crafted response to a query, to cause an
assertion failure that terminates named. (CVE-2015-5986)
Note that Nessus has not tested for these issues but has instead
relied only on the application's self-reported version number.");
script_set_attribute(attribute:"see_also", value:"https://kb.isc.org/article/AA-01287");
script_set_attribute(attribute:"see_also", value:"https://kb.isc.org/article/AA-01291");
script_set_attribute(attribute:"solution", value:
"Upgrade to BIND version 9.9.7-P3 / 9.10.2-P4 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:"2015/08/07");
script_set_attribute(attribute:"patch_publication_date", value:"2015/09/02");
script_set_attribute(attribute:"plugin_publication_date", value:"2015/09/11");
script_set_attribute(attribute:"potential_vulnerability", value:"true");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/a:isc:bind");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"DNS");
script_copyright(english:"This script is Copyright (C) 2015-2018 Tenable Network Security, Inc.");
script_dependencies("bind_version.nasl");
script_require_keys("bind/version", "Settings/ParanoidReport");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
ver = get_kb_item_or_exit("bind/version");
if (report_paranoia < 2) audit(AUDIT_PARANOID); # patch can be applied
fix = '';
# 9.0.0 through BIND 9.9.7-P2 and BIND 9.10.2-P3 are vulnerable
if (
ver =~ "^9\.[0-8]([^0-9]|$)" ||
ver =~ "^9\.9\.[0-6]([^0-9]|$)" ||
ver =~ "^9\.9\.7($|([ab][12]|rc[12]|-P[12])$)"
) fix = '9.9.7-P3';
if (
ver =~ "^9\.10\.[01]([^0-9]|$)" ||
ver =~ "^9\.10\.2($|([ab][12]|rc[12]|-P[1-3])$)"
) fix = '9.10.2-P4';
if (!empty(fix))
{
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");
}
else audit(AUDIT_LISTEN_NOT_VULN, "BIND", 53, ver, "UDP");