UBUNTU-CVE-2025-40775

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Source
https://ubuntu.com/security/CVE-2025-40775
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-40775.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2025-40775
Upstream
Downstream
Related
Published
2025-05-21T00:00:00Z
Modified
2025-07-18T17:05:07Z
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

When an incoming DNS protocol message includes a Transaction Signature (TSIG), BIND always checks it. If the TSIG contains an invalid value in the algorithm field, BIND immediately aborts with an assertion failure. This issue affects BIND 9 versions 9.20.0 through 9.20.8 and 9.21.0 through 9.21.7.

References

Affected packages

Ubuntu:25.04 / bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9@1:9.20.4-3ubuntu1.1?arch=source&distro=plucky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:9.20.4-3ubuntu1.1

Affected versions

1:9.*

1:9.20.0-2ubuntu3
1:9.20.0-2ubuntu4
1:9.20.4-3ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "bind9",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-dbgsym",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-dev",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-dnsutils",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-dnsutils-dbgsym",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-doc",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-host",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-host-dbgsym",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-libs",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-libs-dbgsym",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-utils",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-utils-dbgsym",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9utils",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "dnsutils",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        }
    ]
}