CVE-2020-8620

In BIND 9.15.6 -> 9.16.5, 9.17.0 -> 9.17.3, An attacker who can establish a TCP connection with the server and send data on that connection can exploit this to trigger the assertion failure, causing the server to exit.

CVSS v3.0 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://kb.isc.org/docs/cve-2020-8620	Vendor Advisory
https://security.netapp.com/advisory/ntap-20200827-0003/	Third Party Advisory
https://usn.ubuntu.com/4468-1/	Third Party Advisory
https://security.gentoo.org/glsa/202008-19	Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_20_19	Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html	Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html	Third Party Advisory

Configurations

Configuration 1 (hide)

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

Configuration 2 (hide)

OR	cpe:2.3:a:isc:bind:9.11.3:s1:::supported_preview:::*
	cpe:2.3:a:isc:bind:9.9.12:s1:::supported_preview:::*
	cpe:2.3:a:isc:bind:9.9.13:s1:::supported_preview:::*
	cpe:2.3:a:isc:bind:9.11.21:s1:::supported_preview:::*

Configuration 3 (hide)

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

Configuration 4 (hide)

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

Configuration 5 (hide)

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

Information

Published : 2020-08-21 14:15

Updated : 2022-06-02 13:34

NVD link : CVE-2020-8620

Mitre link : CVE-2020-8620

JSON object : View

CWE

CWE-617

Reachable Assertion

Products Affected

canonical

ubuntu_linux

opensuse

leap

netapp

steelstore_cloud_integrated_storage

isc

bind

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://kb.isc.org/docs/cve-2020-8620", "name": "https://kb.isc.org/docs/cve-2020-8620", "tags": ["Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "https://security.netapp.com/advisory/ntap-20200827-0003/", "name": "https://security.netapp.com/advisory/ntap-20200827-0003/", "tags": ["Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://usn.ubuntu.com/4468-1/", "name": "USN-4468-1", "tags": ["Third Party Advisory"], "refsource": "UBUNTU"}, {"url": "https://security.gentoo.org/glsa/202008-19", "name": "GLSA-202008-19", "tags": ["Third Party Advisory"], "refsource": "GENTOO"}, {"url": "https://www.synology.com/security/advisory/Synology_SA_20_19", "name": "https://www.synology.com/security/advisory/Synology_SA_20_19", "tags": ["Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html", "name": "openSUSE-SU-2020:1699", "tags": ["Third Party Advisory"], "refsource": "SUSE"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html", "name": "openSUSE-SU-2020:1701", "tags": ["Third Party Advisory"], "refsource": "SUSE"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "In BIND 9.15.6 -> 9.16.5, 9.17.0 -> 9.17.3, An attacker who can establish a TCP connection with the server and send data on that connection can exploit this to trigger the assertion failure, causing the server to exit."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-617"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2020-8620", "ASSIGNER": "security-officer@isc.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}}, "publishedDate": "2020-08-21T21:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "9.17.3", "versionStartIncluding": "9.17.0"}, {"cpe23Uri": "cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "9.16.5", "versionStartIncluding": "9.15.6"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:isc:bind:9.11.3:s1:*:*:supported_preview:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:isc:bind:9.9.12:s1:*:*:supported_preview:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:isc:bind:9.9.13:s1:*:*:supported_preview:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:isc:bind:9.11.21:s1:*:*:supported_preview:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2022-06-02T20:34Z"}

7.5 /10

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0 /10

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

JSON object

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