UBUNTU-CVE-2023-4236

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Source
https://ubuntu.com/security/CVE-2023-4236
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-4236.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2023-4236
Upstream
Downstream
Related
Published
2023-09-20T00:00:00Z
Modified
2025-09-08T16:55:53Z
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
  • Ubuntu - medium
Summary
[none]
Details

A flaw in the networking code handling DNS-over-TLS queries may cause named to terminate unexpectedly due to an assertion failure. This happens when internal data structures are incorrectly reused under significant DNS-over-TLS query load. This issue affects BIND 9 versions 9.18.0 through 9.18.18 and 9.18.11-S1 through 9.18.18-S1.

References

Affected packages

Ubuntu:22.04:LTS / bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9@1:9.18.12-0ubuntu0.22.04.3?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:9.18.12-0ubuntu0.22.04.3

Affected versions

1:9.*

1:9.16.15-1ubuntu1
1:9.16.15-1ubuntu2
1:9.16.15-1ubuntu3
1:9.18.0-2ubuntu1
1:9.18.0-2ubuntu2
1:9.18.0-2ubuntu3
1:9.18.1-1ubuntu1
1:9.18.1-1ubuntu1.1
1:9.18.1-1ubuntu1.2
1:9.18.1-1ubuntu1.3
1:9.18.12-0ubuntu0.22.04.1
1:9.18.12-0ubuntu0.22.04.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1:9.18.12-0ubuntu0.22.04.3",
            "binary_name": "bind9"
        },
        {
            "binary_version": "1:9.18.12-0ubuntu0.22.04.3",
            "binary_name": "bind9-dev"
        },
        {
            "binary_version": "1:9.18.12-0ubuntu0.22.04.3",
            "binary_name": "bind9-dnsutils"
        },
        {
            "binary_version": "1:9.18.12-0ubuntu0.22.04.3",
            "binary_name": "bind9-host"
        },
        {
            "binary_version": "1:9.18.12-0ubuntu0.22.04.3",
            "binary_name": "bind9-libs"
        },
        {
            "binary_version": "1:9.18.12-0ubuntu0.22.04.3",
            "binary_name": "bind9-utils"
        },
        {
            "binary_version": "1:9.18.12-0ubuntu0.22.04.3",
            "binary_name": "bind9utils"
        },
        {
            "binary_version": "1:9.18.12-0ubuntu0.22.04.3",
            "binary_name": "dnsutils"
        }
    ]
}

Ubuntu:24.04:LTS / bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9@1:9.18.18-0ubuntu2?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:9.18.18-0ubuntu2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1:9.18.18-0ubuntu2",
            "binary_name": "bind9"
        },
        {
            "binary_version": "1:9.18.18-0ubuntu2",
            "binary_name": "bind9-dev"
        },
        {
            "binary_version": "1:9.18.18-0ubuntu2",
            "binary_name": "bind9-dnsutils"
        },
        {
            "binary_version": "1:9.18.18-0ubuntu2",
            "binary_name": "bind9-host"
        },
        {
            "binary_version": "1:9.18.18-0ubuntu2",
            "binary_name": "bind9-libs"
        },
        {
            "binary_version": "1:9.18.18-0ubuntu2",
            "binary_name": "bind9-utils"
        },
        {
            "binary_version": "1:9.18.18-0ubuntu2",
            "binary_name": "bind9utils"
        },
        {
            "binary_version": "1:9.18.18-0ubuntu2",
            "binary_name": "dnsutils"
        }
    ]
}