CVE-2018-5740

A flaw in the "deny-answer-aliases" feature can cause an assertion failure in named

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

"deny-answer-aliases" is a little-used feature intended to help recursive server operators protect end users against DNS rebinding attacks, a potential method of circumventing the security model used by client browsers. However, a defect in this feature makes it easy, when the feature is in use, to experience an assertion failure in name.c. Affects BIND 9.7.0->9.8.8, 9.9.0->9.9.13, 9.10.0->9.10.8, 9.11.0->9.11.4, 9.12.0->9.12.2, 9.13.0->9.13.2.

"deny-answer-aliases" es una característica poco utilizada que pretende ayudar a los operadores recursivos del servidor a proteger a los usuarios finales contra ataques de reenlace DNS, un método para poder eludir el modelo de seguridad empleado por los navegadores del cliente. Sin embargo, un defecto en esta característica hace que sea sencillo experimentar un fallo de aserción en name.c. Afecta a BIND desde la versión 9.7.0 hasta la versión 9.8.8, desde la versión 9.9.0 hasta la versión 9.9.13, desde la versión 9.10.0 hasta la versión 9.10.8, desde la versión 9.11.0 hasta la versión 9.11.4, desde la versión 9.12.0 hasta la versión 9.12.2 y desde la versión 9.13.0 hasta la versión 9.13.2.

A denial of service flaw was discovered in bind versions that include the "deny-answer-aliases" feature. This flaw may allow a remote attacker to trigger an INSIST assert in named leading to termination of the process and a denial of service condition.

*Credits: ISC would like to thank Tony Finch of the University of Cambridge for reporting this issue.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-01-17 CVE Reserved
2018-08-28 CVE Published
2024-09-16 CVE Updated
2024-10-31 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-617: Reachable Assertion

CAPEC

References (16)

URL	Tag	Source
http://www.securityfocus.com/bid/105055	Third Party Advisory
http://www.securitytracker.com/id/1041436	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/08/msg00033.html	Mailing List
https://lists.debian.org/debian-lts-announce/2021/11/msg00001.html	Mailing List
https://security.netapp.com/advisory/ntap-20180926-0003	Third Party Advisory
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03927en_us	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00026.html	2022-04-12
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00027.html	2022-04-12
https://access.redhat.com/errata/RHSA-2018:2570	2022-04-12
https://access.redhat.com/errata/RHSA-2018:2571	2022-04-12
https://kb.isc.org/docs/aa-01639	2022-04-12
https://security.gentoo.org/glsa/201903-13	2022-04-12
https://usn.ubuntu.com/3769-1	2022-04-12
https://usn.ubuntu.com/3769-2	2022-04-12
https://access.redhat.com/security/cve/CVE-2018-5740	2018-08-27
https://bugzilla.redhat.com/show_bug.cgi?id=1613595	2018-08-27

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				>= 9.7.0 < 9.8.8 Search vendor "Isc" for product "Bind" and version " >= 9.7.0 < 9.8.8"		-		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				>= 9.9.0 < 9.9.13 Search vendor "Isc" for product "Bind" and version " >= 9.9.0 < 9.9.13"		-		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				>= 9.10.0 < 9.10.8 Search vendor "Isc" for product "Bind" and version " >= 9.10.0 < 9.10.8"		-		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				>= 9.11.0 < 9.11.4 Search vendor "Isc" for product "Bind" and version " >= 9.11.0 < 9.11.4"		-		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				>= 9.12.0 < 9.12.2 Search vendor "Isc" for product "Bind" and version " >= 9.12.0 < 9.12.2"		-		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				>= 9.13.0 < 9.13.2 Search vendor "Isc" for product "Bind" and version " >= 9.13.0 < 9.13.2"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop"				6.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop"				7.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				6.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				7.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus"				7.6 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.6"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Eus Search vendor "Redhat" for product "Enterprise Linux Server Eus"				7.5 Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "7.5"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Eus Search vendor "Redhat" for product "Enterprise Linux Server Eus"				7.6 Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "7.6"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				6.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				7.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "7.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Netapp Search vendor "Netapp"		Data Ontap Edge Search vendor "Netapp" for product "Data Ontap Edge"				-		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04"		esm		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04"		lts		Affected
Hp Search vendor "Hp"		Hp-ux Search vendor "Hp" for product "Hp-ux"				-		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.0 Search vendor "Opensuse" for product "Leap" and version "15.0"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.1 Search vendor "Opensuse" for product "Leap" and version "15.1"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				42.3 Search vendor "Opensuse" for product "Leap" and version "42.3"		-		Affected