CVE-2020-8621

CVSS V2 Medium 4.3 CVSS V3 High 7.5
Description
In BIND 9.14.0 -> 9.16.5, 9.17.0 -> 9.17.3, If a server is configured with both QNAME minimization and 'forward first' then an attacker who can send queries to it may be able to trigger the condition that will cause the server to crash. Servers that 'forward only' are not affected.
Overview
  • CVE ID
  • CVE-2020-8621
  • Assigner
  • security-officer@isc.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-08-21T21:15:12
  • Last Modified Date
  • 2022-04-28T18:27:41
Weakness Enumerations
CWE URL
CWE-617 http://cwe.mitre.org/data/definitions/617.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* 1 OR 9.14.0 9.16.5
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* 1 OR 9.17.0 9.17.3
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:a:synology:dns_server:*:*:*:*:*:*:*:* 1 OR 2.2.2-5027
cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 4.3
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://kb.isc.org/docs/cve-2020-8621 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 Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html Mailing List Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-8621
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8621
History
Created Old Value New Value Data Type Notes
2022-05-10 06:25:40 Added to TrackCVE
2022-12-04 21:24:51 2020-08-21T21:15Z 2020-08-21T21:15:12 CVE Published Date updated
2022-12-04 21:24:51 2022-04-28T18:27:41 CVE Modified Date updated
2022-12-04 21:24:51 Analyzed Vulnerability Status updated