CVE-2018-5743

09.10.2019, 16:15

By design, BIND is intended to limit the number of TCP clients that can be connected at any given time. The number of allowed connections is a tunable parameter which, if unset, defaults to a conservative value for most servers. Unfortunately, the code which was intended to limit the number of simultaneous connections contained an error which could be exploited to grow the number of simultaneous connections beyond this limit. Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.6, 9.12.0 -> 9.12.4, 9.14.0. BIND 9 Supported Preview Edition versions 9.9.3-S1 -> 9.11.5-S3, and 9.11.5-S5. Versions 9.13.0 -> 9.13.7 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5743.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	7.5 HIGH	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
isc	CNA	7.5 HIGH	NETWORK	LOW	NONE	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVE	ADP	---				---

Base Score

CVSS 3.x

EPSS Score

Percentile: 82%

Vendor	Product	Version
f5	big-ip_local_traffic_manager	11.5.2 ≤ 𝑥 ≤ 11.6.5
f5	big-ip_local_traffic_manager	12.1.0 ≤ 𝑥 ≤ 12.1.4
f5	big-ip_local_traffic_manager	13.0.0 ≤ 𝑥 ≤ 13.1.1
f5	big-ip_local_traffic_manager	14.0.0 ≤ 𝑥 ≤ 14.1.0
f5	big-ip_local_traffic_manager	15.0.0
f5	big-ip_application_acceleration_manager	11.5.2 ≤ 𝑥 ≤ 11.6.5
f5	big-ip_application_acceleration_manager	12.1.0 ≤ 𝑥 ≤ 12.1.4
f5	big-ip_application_acceleration_manager	13.0.0 ≤ 𝑥 ≤ 13.1.1
f5	big-ip_application_acceleration_manager	14.0.0 ≤ 𝑥 ≤ 14.1.0
f5	big-ip_application_acceleration_manager	15.0.0
f5	big-ip_advanced_firewall_manager	11.5.2 ≤ 𝑥 ≤ 11.6.5
f5	big-ip_advanced_firewall_manager	12.1.0 ≤ 𝑥 ≤ 12.1.4
f5	big-ip_advanced_firewall_manager	13.1.0 ≤ 𝑥 ≤ 13.1.1
f5	big-ip_advanced_firewall_manager	14.0.0 ≤ 𝑥 ≤ 14.1.0
f5	big-ip_advanced_firewall_manager	15.0.0
f5	big-ip_analytics	11.5.2 ≤ 𝑥 ≤ 11.6.5
f5	big-ip_analytics	12.1.0 ≤ 𝑥 ≤ 12.1.4
f5	big-ip_analytics	13.0.0 ≤ 𝑥 ≤ 13.1.1
f5	big-ip_analytics	14.0.0 ≤ 𝑥 ≤ 14.1.0
f5	big-ip_analytics	15.0.0
f5	big-ip_access_policy_manager	11.5.2 ≤ 𝑥 ≤ 11.6.5
f5	big-ip_access_policy_manager	12.1.0 ≤ 𝑥 ≤ 12.1.4
f5	big-ip_access_policy_manager	13.1.0 ≤ 𝑥 ≤ 13.1.1
f5	big-ip_access_policy_manager	14.0.0 ≤ 𝑥 ≤ 14.1.0
f5	big-ip_access_policy_manager	15.0.0
f5	big-ip_application_security_manager	11.5.2 ≤ 𝑥 ≤ 11.6.5
f5	big-ip_application_security_manager	12.1.0 ≤ 𝑥 ≤ 12.1.4
f5	big-ip_application_security_manager	13.0.0 ≤ 𝑥 ≤ 13.1.1
f5	big-ip_application_security_manager	14.0.0 ≤ 𝑥 ≤ 14.1.1
f5	big-ip_application_security_manager	15.0.0
f5	big-ip_edge_gateway	11.5.2 ≤ 𝑥 ≤ 11.6.5
f5	big-ip_edge_gateway	12.1.0 ≤ 𝑥 ≤ 12.1.4
f5	big-ip_edge_gateway	13.0.0 ≤ 𝑥 ≤ 13.1.1
f5	big-ip_edge_gateway	14.0.0 ≤ 𝑥 ≤ 14.1.0
f5	big-ip_edge_gateway	15.0.0
f5	big-ip_fraud_protection_service	11.5.2 ≤ 𝑥 ≤ 11.6.5
f5	big-ip_fraud_protection_service	12.1.0 ≤ 𝑥 ≤ 12.1.4
f5	big-ip_fraud_protection_service	13.0.0 ≤ 𝑥 ≤ 13.1.1
f5	big-ip_fraud_protection_service	14.0.0 ≤ 𝑥 ≤ 14.1.0
f5	big-ip_fraud_protection_service	15.0.0
f5	big-ip_global_traffic_manager	11.5.2 ≤ 𝑥 ≤ 11.6.5
f5	big-ip_global_traffic_manager	12.1.0 ≤ 𝑥 ≤ 12.1.4
f5	big-ip_global_traffic_manager	13.0.0 ≤ 𝑥 ≤ 13.1.1
f5	big-ip_global_traffic_manager	14.0.0 ≤ 𝑥 ≤ 14.1.0
f5	big-ip_global_traffic_manager	15.0.0
f5	big-ip_link_controller	11.5.2 ≤ 𝑥 ≤ 11.6.5
f5	big-ip_link_controller	12.1.0 ≤ 𝑥 ≤ 12.1.4
f5	big-ip_link_controller	13.0.0 ≤ 𝑥 ≤ 13.1.1
f5	big-ip_link_controller	14.0.0 ≤ 𝑥 ≤ 14.1.0
f5	big-ip_link_controller	15.0.0
f5	big-ip_webaccelerator	11.5.2 ≤ 𝑥 ≤ 11.6.5
f5	big-ip_webaccelerator	12.1.0 ≤ 𝑥 ≤ 12.1.4
f5	big-ip_webaccelerator	13.1.0 ≤ 𝑥 ≤ 13.1.1
f5	big-ip_webaccelerator	14.0.0 ≤ 𝑥 ≤ 14.1.0
f5	big-ip_webaccelerator	15.0.0
f5	big-ip_policy_enforcement_manager	11.5.2 ≤ 𝑥 ≤ 11.6.5
f5	big-ip_policy_enforcement_manager	12.1.0 ≤ 𝑥 ≤ 12.1.4
f5	big-ip_policy_enforcement_manager	13.1.0 ≤ 𝑥 ≤ 13.1.1
f5	big-ip_policy_enforcement_manager	14.0.0 ≤ 𝑥 ≤ 14.1.0
f5	big-ip_policy_enforcement_manager	15.0.0
isc	bind	9.9.0 ≤ 𝑥 ≤ 9.10.8
isc	bind	9.11.0 ≤ 𝑥 ≤ 9.11.6
isc	bind	9.12.0 ≤ 𝑥 ≤ 9.12.4
isc	bind	9.13.0 ≤ 𝑥 ≤ 9.13.7
isc	bind	9.9.3:s1
isc	bind	9.10.8:p1
isc	bind	9.11.5:s3
isc	bind	9.11.5:s5
isc	bind	9.14.0
f5	enterprise_manager	3.1.1
f5	big-iq_centralized_management	5.0.0 ≤ 𝑥 ≤ 5.4.0
f5	big-iq_centralized_management	6.0.0 ≤ 𝑥 ≤ 6.1.0
f5	iworkflow	2.3.0
f5	big-ip_domain_name_system	11.5.2 ≤ 𝑥 ≤ 11.6.5
f5	big-ip_domain_name_system	12.1.0 ≤ 𝑥 ≤ 12.1.4
f5	big-ip_domain_name_system	13.1.0 ≤ 𝑥 ≤ 13.1.1
f5	big-ip_domain_name_system	14.0.0 ≤ 𝑥 ≤ 14.1.0
f5	big-ip_domain_name_system	15.0.0

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

bind9

bullseye	1:9.16.50-1~deb11u2 fixed
bullseye (security)	1:9.16.50-1~deb11u1 fixed
bookworm	1:9.18.28-1~deb12u2 fixed
bookworm (security)	1:9.18.28-1~deb12u2 fixed
sid	1:9.20.2-1 fixed
trixie	1:9.20.2-1 fixed

Ubuntu Releases

Ubuntu Product

Codename

bind9

disco	Fixed 1:9.11.5.P1+dfsg-1ubuntu2.3 released
cosmic	Fixed 1:9.11.4+dfsg-3ubuntu5.3 released
bionic	Fixed 1:9.11.3+dfsg-1ubuntu1.7 released
xenial	Fixed 1:9.10.3.dfsg.P4-8ubuntu1.14 released
trusty	Fixed 1:9.9.5.dfsg-3ubuntu0.19+esm1 released

Common Weakness Enumeration

CWE-770 - Allocation of Resources Without Limits or Throttling
The software allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

References

https://kb.isc.org/docs/cve-2018-5743

https://support.f5.com/csp/article/K74009656?utm_source=f5support&amp%3Butm_medium=RSS

https://www.synology.com/security/advisory/Synology_SA_19_20

https://kb.isc.org/docs/cve-2018-5743

https://support.f5.com/csp/article/K74009656?utm_source=f5support&amp%3Butm_medium=RSS

https://www.synology.com/security/advisory/Synology_SA_19_20