USN-5126-1

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Source
https://ubuntu.com/security/notices/USN-5126-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5126-1.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-5126-1
Upstream
Related
Published
2021-10-28T10:52:18Z
Modified
2026-04-22T10:33:53Z
Summary
bind9 vulnerability
Details

Kishore Kumar Kothapalli discovered that Bind incorrectly handled the lame cache when processing responses. A remote attacker could possibly use this issue to cause Bind to consume resources, resulting in a denial of service.

References

Affected packages

Ubuntu:18.04:LTS / bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9@1:9.11.3+dfsg-1ubuntu1.16?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:9.11.3+dfsg-1ubuntu1.16

Affected versions

1:9.*
1:9.10.3.dfsg.P4-12.6ubuntu1
1:9.11.2.P1-1ubuntu2
1:9.11.2.P1-1ubuntu3
1:9.11.2.P1-1ubuntu4
1:9.11.2.P1-1ubuntu5
1:9.11.3+dfsg-1ubuntu1
1:9.11.3+dfsg-1ubuntu1.1
1:9.11.3+dfsg-1ubuntu1.2
1:9.11.3+dfsg-1ubuntu1.3
1:9.11.3+dfsg-1ubuntu1.5
1:9.11.3+dfsg-1ubuntu1.7
1:9.11.3+dfsg-1ubuntu1.8
1:9.11.3+dfsg-1ubuntu1.9
1:9.11.3+dfsg-1ubuntu1.10
1:9.11.3+dfsg-1ubuntu1.11
1:9.11.3+dfsg-1ubuntu1.12
1:9.11.3+dfsg-1ubuntu1.13
1:9.11.3+dfsg-1ubuntu1.14
1:9.11.3+dfsg-1ubuntu1.15

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "bind9",
            "binary_version":  "1:9.11.3+dfsg-1ubuntu1.16"
        },
        {
            "binary_name":  "bind9-host",
            "binary_version":  "1:9.11.3+dfsg-1ubuntu1.16"
        },
        {
            "binary_name":  "bind9utils",
            "binary_version":  "1:9.11.3+dfsg-1ubuntu1.16"
        },
        {
            "binary_name":  "dnsutils",
            "binary_version":  "1:9.11.3+dfsg-1ubuntu1.16"
        },
        {
            "binary_name":  "libbind9-160",
            "binary_version":  "1:9.11.3+dfsg-1ubuntu1.16"
        },
        {
            "binary_name":  "libdns-export1100",
            "binary_version":  "1:9.11.3+dfsg-1ubuntu1.16"
        },
        {
            "binary_name":  "libdns1100",
            "binary_version":  "1:9.11.3+dfsg-1ubuntu1.16"
        },
        {
            "binary_name":  "libirs-export160",
            "binary_version":  "1:9.11.3+dfsg-1ubuntu1.16"
        },
        {
            "binary_name":  "libirs160",
            "binary_version":  "1:9.11.3+dfsg-1ubuntu1.16"
        },
        {
            "binary_name":  "libisc-export169",
            "binary_version":  "1:9.11.3+dfsg-1ubuntu1.16"
        },
        {
            "binary_name":  "libisc169",
            "binary_version":  "1:9.11.3+dfsg-1ubuntu1.16"
        },
        {
            "binary_name":  "libisccc-export160",
            "binary_version":  "1:9.11.3+dfsg-1ubuntu1.16"
        },
        {
            "binary_name":  "libisccc160",
            "binary_version":  "1:9.11.3+dfsg-1ubuntu1.16"
        },
        {
            "binary_name":  "libisccfg-export160",
            "binary_version":  "1:9.11.3+dfsg-1ubuntu1.16"
        },
        {
            "binary_name":  "libisccfg160",
            "binary_version":  "1:9.11.3+dfsg-1ubuntu1.16"
        },
        {
            "binary_name":  "liblwres160",
            "binary_version":  "1:9.11.3+dfsg-1ubuntu1.16"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [
        {
            "id":  "CVE-2021-25219",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:18.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5126-1.json"

Ubuntu:20.04:LTS / bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9@1:9.16.1-0ubuntu2.9?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:9.16.1-0ubuntu2.9

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
1:9.16.1-0ubuntu2.3
1:9.16.1-0ubuntu2.4
1:9.16.1-0ubuntu2.6
1:9.16.1-0ubuntu2.7
1:9.16.1-0ubuntu2.8

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "bind9",
            "binary_version":  "1:9.16.1-0ubuntu2.9"
        },
        {
            "binary_name":  "bind9-dnsutils",
            "binary_version":  "1:9.16.1-0ubuntu2.9"
        },
        {
            "binary_name":  "bind9-host",
            "binary_version":  "1:9.16.1-0ubuntu2.9"
        },
        {
            "binary_name":  "bind9-libs",
            "binary_version":  "1:9.16.1-0ubuntu2.9"
        },
        {
            "binary_name":  "bind9-utils",
            "binary_version":  "1:9.16.1-0ubuntu2.9"
        },
        {
            "binary_name":  "bind9utils",
            "binary_version":  "1:9.16.1-0ubuntu2.9"
        },
        {
            "binary_name":  "dnsutils",
            "binary_version":  "1:9.16.1-0ubuntu2.9"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [
        {
            "id":  "CVE-2021-25219",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:20.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5126-1.json"