CVE-2020-8624

update-policy rules of type "subdomain" are enforced incorrectly

Severity Score

4.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In BIND 9.9.12 -> 9.9.13, 9.10.7 -> 9.10.8, 9.11.3 -> 9.11.21, 9.12.1 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.12-S1 -> 9.9.13-S1, 9.11.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker who has been granted privileges to change a specific subset of the zone's content could abuse these unintended additional privileges to update other contents of the zone.

En BIND versiones 9.9.12 -) 9.9.13, 9.10.7 -) 9.10.8, 9.11.3 -) 9.11.21, 9.12.1 -) 9.16.5, 9.17.0 -) 9.17.3, también afecta a versiones 9.9 .12-S1 -) 9.9.13-S1, 9.11.3-S1 -) 9.11.21-S1 de BIND 9 Supported Preview Edition, un atacante a quien le han sido otorgado privilegios para cambiar un subconjunto específico del contenido de la zona podría abusar de estos privilegios adicionales no previstos para actualizar otros contenidos de la zona.

A flaw was found in bind. Updates to "Update-policy" rules of type "subdomain" are treated as if they were of type "zonesub" which allows updates to all parts of the zone along with the intended subdomain. The highest threat from this vulnerability is to data integrity.

*Credits: ISC would like to thank Joop Boonen of credativ GmbH for bringing this vulnerability to our attention.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-02-05 CVE Reserved
2020-08-21 CVE Published
2024-07-11 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-269: Improper Privilege Management
CWE-400: Uncontrolled Resource Consumption

CAPEC

References (12)

URL	Tag	Source
https://security.netapp.com/advisory/ntap-20200827-0003	Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_20_19	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html	2023-11-07
https://kb.isc.org/docs/cve-2020-8624	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DQN62GBMCIC5AY4KYADGXNKVY6AJKSJE	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKAMJZXR66P6S5LEU4SN7USSNCWTXEXP	2023-11-07
https://security.gentoo.org/glsa/202008-19	2023-11-07
https://usn.ubuntu.com/4468-1	2023-11-07
https://www.debian.org/security/2020/dsa-4752	2023-11-07
https://access.redhat.com/security/cve/CVE-2020-8624	2020-11-24
https://bugzilla.redhat.com/show_bug.cgi?id=1869480	2020-11-24

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"				>= 9.9.12 <= 9.9.13 Search vendor "Isc" for product "Bind" and version " >= 9.9.12 <= 9.9.13"		-		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				>= 9.10.7 <= 9.10.8 Search vendor "Isc" for product "Bind" and version " >= 9.10.7 <= 9.10.8"		-		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				>= 9.11.3 <= 9.11.21 Search vendor "Isc" for product "Bind" and version " >= 9.11.3 <= 9.11.21"		-		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				>= 9.12.1 <= 9.16.5 Search vendor "Isc" for product "Bind" and version " >= 9.12.1 <= 9.16.5"		-		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				>= 9.17.0 <= 9.17.3 Search vendor "Isc" for product "Bind" and version " >= 9.17.0 <= 9.17.3"		-		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.9.12 Search vendor "Isc" for product "Bind" and version "9.9.12"		s1, supported_preview		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.9.13 Search vendor "Isc" for product "Bind" and version "9.9.13"		s1, supported_preview		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.11.3 Search vendor "Isc" for product "Bind" and version "9.11.3"		s1, supported_preview		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.11.21 Search vendor "Isc" for product "Bind" and version "9.11.21"		s1, supported_preview		Affected
Netapp Search vendor "Netapp"		Steelstore Cloud Integrated Storage Search vendor "Netapp" for product "Steelstore Cloud Integrated Storage"				-		-		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"		esm		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
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				20.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "20.04"		lts		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				31 Search vendor "Fedoraproject" for product "Fedora" and version "31"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				32 Search vendor "Fedoraproject" for product "Fedora" and version "32"		-		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"				15.2 Search vendor "Opensuse" for product "Leap" and version "15.2"		-		Affected