4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.022 Low
EPSS
Percentile
89.6%
In BIND 9.10.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.10.5-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker that can reach a vulnerable system with a specially crafted query packet can trigger a crash. To be vulnerable, the system must: * be running BIND that was built with ‘–enable-native-pkcs11’ * be signing one or more zones with an RSA key * be able to receive queries from a possible attacker (CVE-2020-8623)
Impact
A zone signed with RSA is vulnerable to this issue. When an attacker sends a specially crafted query to the vulnerable zone, the BIND process experiences an assertion failure and restarts.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from F5 Networks BIG-IP Solution K82252291.
#
# The text description of this plugin is (C) F5 Networks.
#
include("compat.inc");
if (description)
{
script_id(140616);
script_version("1.8");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/06/03");
script_cve_id("CVE-2020-8623");
script_xref(name:"IAVA", value:"2020-A-0385-S");
script_name(english:"F5 Networks BIG-IP : BIND vulnerability (K82252291)");
script_summary(english:"Checks the BIG-IP version.");
script_set_attribute(
attribute:"synopsis",
value:"The remote device is missing a vendor-supplied security patch."
);
script_set_attribute(
attribute:"description",
value:
"In BIND 9.10.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also
affects 9.10.5-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview
Edition, An attacker that can reach a vulnerable system with a
specially crafted query packet can trigger a crash. To be vulnerable,
the system must: * be running BIND that was built with
'--enable-native-pkcs11' * be signing one or more zones with an RSA
key * be able to receive queries from a possible attacker
(CVE-2020-8623)
Impact
A zone signed with RSA is vulnerable to this issue. When an attacker
sends a specially crafted query to the vulnerable zone, the BIND
process experiences an assertion failure and restarts."
);
script_set_attribute(
attribute:"see_also",
value:"https://support.f5.com/csp/article/K82252291"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade to one of the non-vulnerable versions listed in the F5
Solution K82252291."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P");
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:N/I:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-8623");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_access_policy_manager");
script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_advanced_firewall_manager");
script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_application_acceleration_manager");
script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_application_security_manager");
script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_application_visibility_and_reporting");
script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_global_traffic_manager");
script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_link_controller");
script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_local_traffic_manager");
script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_policy_enforcement_manager");
script_set_attribute(attribute:"cpe", value:"cpe:/h:f5:big-ip");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/08/21");
script_set_attribute(attribute:"patch_publication_date", value:"2020/08/25");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/09/17");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2020-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"F5 Networks Local Security Checks");
script_dependencies("f5_bigip_detect.nbin");
script_require_keys("Host/local_checks_enabled", "Host/BIG-IP/hotfix", "Host/BIG-IP/modules", "Host/BIG-IP/version");
exit(0);
}
include("f5_func.inc");
if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
version = get_kb_item("Host/BIG-IP/version");
if ( ! version ) audit(AUDIT_OS_NOT, "F5 Networks BIG-IP");
if ( isnull(get_kb_item("Host/BIG-IP/hotfix")) ) audit(AUDIT_KB_MISSING, "Host/BIG-IP/hotfix");
if ( ! get_kb_item("Host/BIG-IP/modules") ) audit(AUDIT_KB_MISSING, "Host/BIG-IP/modules");
sol = "K82252291";
vmatrix = make_array();
# AFM
vmatrix["AFM"] = make_array();
vmatrix["AFM"]["affected" ] = make_list("16.0.0","15.0.0-15.1.0","14.1.0-14.1.2","13.1.2-13.1.3","12.1.4-12.1.5","11.6.4-11.6.5");
vmatrix["AFM"]["unaffected"] = make_list("16.0.0.1","15.1.1","14.1.2.8","13.1.3.5","11.6.5.3");
# AM
vmatrix["AM"] = make_array();
vmatrix["AM"]["affected" ] = make_list("16.0.0","15.0.0-15.1.0","14.1.0-14.1.2","13.1.2-13.1.3","12.1.4-12.1.5","11.6.4-11.6.5");
vmatrix["AM"]["unaffected"] = make_list("16.0.0.1","15.1.1","14.1.2.8","13.1.3.5","11.6.5.3");
# APM
vmatrix["APM"] = make_array();
vmatrix["APM"]["affected" ] = make_list("16.0.0","15.0.0-15.1.0","14.1.0-14.1.2","13.1.2-13.1.3","12.1.4-12.1.5","11.6.4-11.6.5");
vmatrix["APM"]["unaffected"] = make_list("16.0.0.1","15.1.1","14.1.2.8","13.1.3.5","11.6.5.3");
# ASM
vmatrix["ASM"] = make_array();
vmatrix["ASM"]["affected" ] = make_list("16.0.0","15.0.0-15.1.0","14.1.0-14.1.2","13.1.2-13.1.3","12.1.4-12.1.5","11.6.4-11.6.5");
vmatrix["ASM"]["unaffected"] = make_list("16.0.0.1","15.1.1","14.1.2.8","13.1.3.5","11.6.5.3");
# AVR
vmatrix["AVR"] = make_array();
vmatrix["AVR"]["affected" ] = make_list("16.0.0","15.0.0-15.1.0","14.1.0-14.1.2","13.1.2-13.1.3","12.1.4-12.1.5","11.6.4-11.6.5");
vmatrix["AVR"]["unaffected"] = make_list("16.0.0.1","15.1.1","14.1.2.8","13.1.3.5","11.6.5.3");
# GTM
vmatrix["GTM"] = make_array();
vmatrix["GTM"]["affected" ] = make_list("16.0.0","15.0.0-15.1.0","14.1.0-14.1.2","13.1.2-13.1.3","12.1.4-12.1.5","11.6.4-11.6.5");
vmatrix["GTM"]["unaffected"] = make_list("16.0.0.1","15.1.1","14.1.2.8","13.1.3.5","11.6.5.3");
# LC
vmatrix["LC"] = make_array();
vmatrix["LC"]["affected" ] = make_list("16.0.0","15.0.0-15.1.0","14.1.0-14.1.2","13.1.2-13.1.3","12.1.4-12.1.5","11.6.4-11.6.5");
vmatrix["LC"]["unaffected"] = make_list("16.0.0.1","15.1.1","14.1.2.8","13.1.3.5","11.6.5.3");
# LTM
vmatrix["LTM"] = make_array();
vmatrix["LTM"]["affected" ] = make_list("16.0.0","15.0.0-15.1.0","14.1.0-14.1.2","13.1.2-13.1.3","12.1.4-12.1.5","11.6.4-11.6.5");
vmatrix["LTM"]["unaffected"] = make_list("16.0.0.1","15.1.1","14.1.2.8","13.1.3.5","11.6.5.3");
# PEM
vmatrix["PEM"] = make_array();
vmatrix["PEM"]["affected" ] = make_list("16.0.0","15.0.0-15.1.0","14.1.0-14.1.2","13.1.2-13.1.3","12.1.4-12.1.5","11.6.4-11.6.5");
vmatrix["PEM"]["unaffected"] = make_list("16.0.0.1","15.1.1","14.1.2.8","13.1.3.5","11.6.5.3");
if (bigip_is_affected(vmatrix:vmatrix, sol:sol))
{
if (report_verbosity > 0) security_warning(port:0, extra:bigip_report_get());
else security_warning(0);
exit(0);
}
else
{
tested = bigip_get_tested_modules();
audit_extra = "For BIG-IP module(s) " + tested + ",";
if (tested) audit(AUDIT_INST_VER_NOT_VULN, audit_extra, version);
else audit(AUDIT_HOST_NOT, "running any of the affected modules");
}
Vendor | Product | Version | CPE |
---|---|---|---|
f5 | big-ip_advanced_firewall_manager | cpe:/a:f5:big-ip_advanced_firewall_manager | |
f5 | big-ip_application_acceleration_manager | cpe:/a:f5:big-ip_application_acceleration_manager | |
f5 | big-ip_application_security_manager | cpe:/a:f5:big-ip_application_security_manager | |
f5 | big-ip_application_visibility_and_reporting | cpe:/a:f5:big-ip_application_visibility_and_reporting | |
f5 | big-ip_global_traffic_manager | cpe:/a:f5:big-ip_global_traffic_manager | |
f5 | big-ip_link_controller | cpe:/a:f5:big-ip_link_controller | |
f5 | big-ip_local_traffic_manager | cpe:/a:f5:big-ip_local_traffic_manager | |
f5 | big-ip_policy_enforcement_manager | cpe:/a:f5:big-ip_policy_enforcement_manager | |
f5 | big-ip | cpe:/h:f5:big-ip | |
f5 | big-ip_access_policy_manager | cpe:/a:f5:big-ip_access_policy_manager |
4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.022 Low
EPSS
Percentile
89.6%