UBUNTU-CVE-2020-8620

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Source
https://ubuntu.com/security/CVE-2020-8620
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-8620.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-8620
Upstream
Downstream
Related
Published
2020-08-20T00:00:00Z
Modified
2025-09-08T16:45:59Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:20.04:LTS / bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9@1:9.16.1-0ubuntu2.3?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:9.16.1-0ubuntu2.3

Affected versions

1:9.*

1:9.11.5.P4+dfsg-5.1ubuntu2
1:9.11.5.P4+dfsg-5.1ubuntu3
1:9.11.5.P4+dfsg-5.1ubuntu4
1:9.11.5.P4+dfsg-5.1ubuntu5
1:9.11.14+dfsg-1ubuntu1
1:9.11.14+dfsg-3ubuntu1
1:9.16.0-1ubuntu3
1:9.16.0-1ubuntu4
1:9.16.0-1ubuntu5
1:9.16.1-0ubuntu1
1:9.16.1-0ubuntu2
1:9.16.1-0ubuntu2.1
1:9.16.1-0ubuntu2.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "bind9",
            "binary_version": "1:9.16.1-0ubuntu2.3"
        },
        {
            "binary_name": "bind9-dnsutils",
            "binary_version": "1:9.16.1-0ubuntu2.3"
        },
        {
            "binary_name": "bind9-host",
            "binary_version": "1:9.16.1-0ubuntu2.3"
        },
        {
            "binary_name": "bind9-libs",
            "binary_version": "1:9.16.1-0ubuntu2.3"
        },
        {
            "binary_name": "bind9-utils",
            "binary_version": "1:9.16.1-0ubuntu2.3"
        },
        {
            "binary_name": "bind9utils",
            "binary_version": "1:9.16.1-0ubuntu2.3"
        },
        {
            "binary_name": "dnsutils",
            "binary_version": "1:9.16.1-0ubuntu2.3"
        }
    ],
    "availability": "No subscription required"
}