USN-7739-1

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/notices/USN-7739-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7739-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-7739-1
Upstream
Related
Published
2025-09-08T00:14:04.405481Z
Modified
2025-10-13T04:42:22Z
Summary
bind9 vulnerabilities
Details

Greg Kuechle discovered that Bind incorrectly handled certain incremental zone updates. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. (CVE-2021-25214)

Siva Kakarla discovered that Bind incorrectly handled certain DNAME records. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. (CVE-2021-25215)

It was discovered that Bind incorrectly handled GSSAPI security policy negotiation. A remote attacker could use this issue to cause Bind to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-25216)

References

Affected packages

Ubuntu:Pro:14.04:LTS / bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9@1:9.9.5.dfsg-3ubuntu0.19+esm13?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:9.9.5.dfsg-3ubuntu0.19+esm13

Affected versions

1:9.*

1:9.9.3.dfsg.P2-4ubuntu1
1:9.9.3.dfsg.P2-4ubuntu2
1:9.9.3.dfsg.P2-4ubuntu3
1:9.9.5.dfsg-2
1:9.9.5.dfsg-3
1:9.9.5.dfsg-3ubuntu0.1
1:9.9.5.dfsg-3ubuntu0.2
1:9.9.5.dfsg-3ubuntu0.3
1:9.9.5.dfsg-3ubuntu0.4
1:9.9.5.dfsg-3ubuntu0.5
1:9.9.5.dfsg-3ubuntu0.6
1:9.9.5.dfsg-3ubuntu0.7
1:9.9.5.dfsg-3ubuntu0.8
1:9.9.5.dfsg-3ubuntu0.9
1:9.9.5.dfsg-3ubuntu0.10
1:9.9.5.dfsg-3ubuntu0.11
1:9.9.5.dfsg-3ubuntu0.12
1:9.9.5.dfsg-3ubuntu0.13
1:9.9.5.dfsg-3ubuntu0.14
1:9.9.5.dfsg-3ubuntu0.15
1:9.9.5.dfsg-3ubuntu0.16
1:9.9.5.dfsg-3ubuntu0.17
1:9.9.5.dfsg-3ubuntu0.18
1:9.9.5.dfsg-3ubuntu0.19
1:9.9.5.dfsg-3ubuntu0.19+esm1
1:9.9.5.dfsg-3ubuntu0.19+esm2
1:9.9.5.dfsg-3ubuntu0.19+esm3
1:9.9.5.dfsg-3ubuntu0.19+esm4
1:9.9.5.dfsg-3ubuntu0.19+esm5
1:9.9.5.dfsg-3ubuntu0.19+esm6
1:9.9.5.dfsg-3ubuntu0.19+esm7
1:9.9.5.dfsg-3ubuntu0.19+esm9
1:9.9.5.dfsg-3ubuntu0.19+esm10
1:9.9.5.dfsg-3ubuntu0.19+esm11
1:9.9.5.dfsg-3ubuntu0.19+esm12

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13",
            "binary_name": "bind9"
        },
        {
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13",
            "binary_name": "bind9-host"
        },
        {
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13",
            "binary_name": "bind9utils"
        },
        {
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13",
            "binary_name": "dnsutils"
        },
        {
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13",
            "binary_name": "host"
        },
        {
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13",
            "binary_name": "libbind-dev"
        },
        {
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13",
            "binary_name": "libbind9-90"
        },
        {
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13",
            "binary_name": "libdns100"
        },
        {
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13",
            "binary_name": "libisc95"
        },
        {
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13",
            "binary_name": "libisccc90"
        },
        {
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13",
            "binary_name": "libisccfg90"
        },
        {
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13",
            "binary_name": "liblwres90"
        },
        {
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13",
            "binary_name": "lwresd"
        }
    ],
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:Pro:14.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-25214",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2021-25215",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2021-25216",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}