CVE-2020-8622

In BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker on the network path for a TSIG-signed request, or operating the server receiving the TSIG-signed request, could send a truncated response to that request, triggering an assertion failure, causing the server to exit. Alternately, an off-path attacker would have to correctly guess when a TSIG-signed request was sent, along with other characteristics of the packet and message, and spoof a truncated response to trigger an assertion failure, causing the server to exit.

CVSS v3 6.5 MEDIUM
CVSS v2.0 4.0 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.0^/10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:L/Au:S/C:N/I:N/A:P

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html	Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html	Mailing List Third Party Advisory
https://kb.isc.org/docs/cve-2020-8622	Vendor Advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00053.html	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DQN62GBMCIC5AY4KYADGXNKVY6AJKSJE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKAMJZXR66P6S5LEU4SN7USSNCWTXEXP/
https://security.gentoo.org/glsa/202008-19	Third Party Advisory
https://security.netapp.com/advisory/ntap-20200827-0003/	Third Party Advisory
https://usn.ubuntu.com/4468-1/	Third Party Advisory
https://usn.ubuntu.com/4468-2/	Third Party Advisory
https://www.debian.org/security/2020/dsa-4752	Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html	Patch Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_20_19	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:isc:bind::::::::
	cpe:2.3:a:isc:bind::::::::
	cpe:2.3:a:isc:bind::::::::

Configuration 2 (hide)

OR	cpe:2.3:a:isc:bind:9.9.3:s1:::supported_preview:::*
	cpe:2.3:a:isc:bind:9.11.21:s1:::supported_preview:::*

Configuration 3 (hide)

OR	cpe:2.3:o:fedoraproject:fedora:31:::::::*
	cpe:2.3:o:fedoraproject:fedora:32:::::::*

Configuration 4 (hide)

OR	cpe:2.3:o:debian:debian_linux:9.0:::::::*
	cpe:2.3:o:debian:debian_linux:10.0:::::::*

Configuration 5 (hide)

OR	cpe:2.3:o:canonical:ubuntu_linux:12.04::::-:::
	cpe:2.3:o:canonical:ubuntu_linux:14.04::::esm:::
	cpe:2.3:o:canonical:ubuntu_linux:16.04::::esm:::
	cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:20.04::::lts:::

Configuration 6 (hide)

cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*

Configuration 7 (hide)

OR	cpe:2.3:o:opensuse:leap:15.1:::::::*
	cpe:2.3:o:opensuse:leap:15.2:::::::*

Configuration 8 (hide)

cpe:2.3:a:synology:dns_server:*:*:*:*:*:*:*:*

Configuration 9 (hide)

cpe:2.3:a:oracle:communications_diameter_signaling_router:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2020-08-21 21:15

Updated : 2023-11-07 03:26

NVD link : CVE-2020-8622

Mitre link : CVE-2020-8622

CVE.ORG link : CVE-2020-8622

JSON object : View

Products Affected

canonical

ubuntu_linux

fedoraproject

fedora

opensuse

leap

netapp

steelstore_cloud_integrated_storage

isc

bind

synology

dns_server

debian

debian_linux

oracle

communications_diameter_signaling_router

CWE

CWE-617

Reachable Assertion

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Alternately, an off-path attacker would have to correctly guess when a TSIG-signed request was sent, along with other characteristics of the packet and message, and spoof a truncated response to trigger an assertion failure, causing the server to exit."}, {"lang": "es", "value": "En BIND versiones 9.0.0 -) 9.11.21, 9.12.0 -) 9.16.5, 9.17.0 -) 9.17.3, tambi\u00e9n afecta a versiones 9.9.3-S1 -) 9.11.21-S1 de BIND 9 Supported Preview Edition, un atacante sobre la ruta de la red para una petici\u00f3n firmada por TSIG, u operando el servidor que recibe la petici\u00f3n firmada por TSIG, podr\u00eda enviar una respuesta truncada a esa petici\u00f3n, desencadenando un fallo de aserci\u00f3n y causando que el servidor salga. Alternativamente, un atacante fuera de la ruta tendr\u00eda que adivinar correctamente cu\u00e1ndo fue enviada una petici\u00f3n firmada por TSIG, junto con otras caracter\u00edsticas del paquete y mensaje, y falsificar una respuesta truncada para desencadenar un fallo de aserci\u00f3n, causando la salida del servidor."}], "lastModified": "2023-11-07T03:26:38.710", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "64A2E4C5-29AE-424C-8C9D-FDA1025E6056", "versionEndIncluding": "9.11.21", "versionStartIncluding": "9.0.0"}, {"criteria": "cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D4777406-0B07-4C03-A919-4627C6E09286", "versionEndIncluding": "9.16.5", "versionStartIncluding": "9.12.0"}, {"criteria": "cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "85031A21-4F54-4CE6-B0F3-66D09928FF3C", "versionEndIncluding": "9.17.3", "versionStartIncluding": "9.17.0"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:isc:bind:9.9.3:s1:*:*:supported_preview:*:*:*", "vulnerable": true, "matchCriteriaId": "40EE014B-0CD8-45F3-BEDB-AE6368A78B04"}, {"criteria": "cpe:2.3:a:isc:bind:9.11.21:s1:*:*:supported_preview:*:*:*", "vulnerable": true, "matchCriteriaId": "5CC1F26C-4757-4C87-BD8B-2FA456A88C6F"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "80F0FA5D-8D3B-4C0E-81E2-87998286AF33"}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "36D96259-24BD-44E2-96D9-78CE1D41F956"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252"}, {"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*", "vulnerable": true, "matchCriteriaId": "CB66DB75-2B16-4EBF-9B93-CE49D8086E41"}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*", "vulnerable": true, "matchCriteriaId": "815D70A8-47D3-459C-A32C-9FEACA0659D1"}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*", "vulnerable": true, "matchCriteriaId": "7A5301BF-1402-4BE0-A0F8-69FBE79BC6D6"}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "vulnerable": true, "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D"}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*", "vulnerable": true, "matchCriteriaId": "902B8056-9E37-443B-8905-8AA93E2447FB"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E94F7F59-1785-493F-91A7-5F5EA5E87E4D"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B620311B-34A3-48A6-82DF-6F078D7A4493"}, {"criteria": "cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B009C22E-30A4-4288-BCF6-C3E81DEAF45A"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:synology:dns_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BD9665DE-362F-4FB4-A49C-8D5E8253C878", "versionEndExcluding": "2.2.2-5028"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:oracle:communications_diameter_signaling_router:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C88D46AF-459D-4917-9403-0F63FEC83512", "versionEndIncluding": "8.5.0", "versionStartIncluding": "8.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-officer@isc.org"}

6.5 /10

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.0 /10

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

JSON object

Attach tags to CVE-2020-8622

6.5^/10

4.0^/10

Attach tags to `CVE-2020-8622`