UBUNTU-CVE-2020-8616

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Source
https://ubuntu.com/security/CVE-2020-8616
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-8616.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-8616
Related
Published
2020-05-19T00:00:00Z
Modified
2025-06-02T17:11:08Z
Severity
  • 8.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H CVSS Calculator
  • 8.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

A malicious actor who intentionally exploits this lack of effective limitation on the number of fetches performed when processing referrals can, through the use of specially crafted referrals, cause a recursing server to issue a very large number of fetches in an attempt to process the referral. This has at least two potential effects: The performance of the recursing server can potentially be degraded by the additional work required to perform these fetches, and The attacker can exploit this behavior to use the recursing server as a reflector in a reflection attack with a high amplification factor.

References

Affected packages

Ubuntu:Pro:14.04:LTS / bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9@1:9.9.5.dfsg-3ubuntu0.19+esm2?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:9.9.5.dfsg-3ubuntu0.19+esm2

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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "bind9",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm2"
        },
        {
            "binary_name": "bind9-doc",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm2"
        },
        {
            "binary_name": "bind9-host",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm2"
        },
        {
            "binary_name": "bind9utils",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm2"
        },
        {
            "binary_name": "dnsutils",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm2"
        },
        {
            "binary_name": "host",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm2"
        },
        {
            "binary_name": "libbind-dev",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm2"
        },
        {
            "binary_name": "libbind9-90",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm2"
        },
        {
            "binary_name": "libdns100",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm2"
        },
        {
            "binary_name": "libisc95",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm2"
        },
        {
            "binary_name": "libisccc90",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm2"
        },
        {
            "binary_name": "libisccfg90",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm2"
        },
        {
            "binary_name": "liblwres90",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm2"
        },
        {
            "binary_name": "lwresd",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm2"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "ubuntu_priority": "medium"
}

Ubuntu:16.04:LTS / bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9@1:9.10.3.dfsg.P4-8ubuntu1.16?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:9.10.3.dfsg.P4-8ubuntu1.16

Affected versions

1:9.*

1:9.9.5.dfsg-11ubuntu1
1:9.9.5.dfsg-12
1:9.9.5.dfsg-12.1
1:9.9.5.dfsg-12.1ubuntu1
1:9.10.3.dfsg.P2-4
1:9.10.3.dfsg.P2-5
1:9.10.3.dfsg.P4-3
1:9.10.3.dfsg.P4-4
1:9.10.3.dfsg.P4-5
1:9.10.3.dfsg.P4-8
1:9.10.3.dfsg.P4-8ubuntu1
1:9.10.3.dfsg.P4-8ubuntu1.1
1:9.10.3.dfsg.P4-8ubuntu1.2
1:9.10.3.dfsg.P4-8ubuntu1.3
1:9.10.3.dfsg.P4-8ubuntu1.4
1:9.10.3.dfsg.P4-8ubuntu1.5
1:9.10.3.dfsg.P4-8ubuntu1.6
1:9.10.3.dfsg.P4-8ubuntu1.7
1:9.10.3.dfsg.P4-8ubuntu1.8
1:9.10.3.dfsg.P4-8ubuntu1.9
1:9.10.3.dfsg.P4-8ubuntu1.10
1:9.10.3.dfsg.P4-8ubuntu1.11
1:9.10.3.dfsg.P4-8ubuntu1.12
1:9.10.3.dfsg.P4-8ubuntu1.14
1:9.10.3.dfsg.P4-8ubuntu1.15

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "bind9",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "bind9-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "bind9-doc",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "bind9-host",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "bind9-host-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "bind9utils",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "bind9utils-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "dnsutils",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "dnsutils-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "host",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libbind-dev",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libbind-export-dev",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libbind9-140",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libbind9-140-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libdns-export162",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libdns-export162-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libdns-export162-udeb",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libdns-export162-udeb-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libdns162",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libdns162-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libirs-export141",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libirs-export141-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libirs-export141-udeb",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libirs-export141-udeb-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libirs141",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libirs141-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libisc-export160",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libisc-export160-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libisc-export160-udeb",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libisc-export160-udeb-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libisc160",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libisc160-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libisccc-export140",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libisccc-export140-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libisccc-export140-udeb",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libisccc-export140-udeb-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libisccc140",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libisccc140-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libisccfg-export140",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libisccfg-export140-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libisccfg-export140-udeb",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libisccfg-export140-udeb-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libisccfg140",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "libisccfg140-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "liblwres141",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "liblwres141-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "lwresd",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        },
        {
            "binary_name": "lwresd-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.16"
        }
    ],
    "availability": "No subscription required",
    "ubuntu_priority": "medium"
}

Ubuntu:18.04:LTS / bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9@1:9.11.3+dfsg-1ubuntu1.12?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:9.11.3+dfsg-1ubuntu1.12

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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "bind9",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "bind9-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "bind9-doc",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "bind9-host",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "bind9-host-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "bind9utils",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "bind9utils-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "dnsutils",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "dnsutils-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libbind-dev",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libbind-export-dev",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libbind9-160",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libbind9-160-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libdns-export1100",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libdns-export1100-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libdns-export1100-udeb",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libdns1100",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libdns1100-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libirs-export160",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libirs-export160-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libirs-export160-udeb",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libirs160",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libirs160-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libisc-export169",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libisc-export169-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libisc-export169-udeb",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libisc169",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libisc169-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libisccc-export160",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libisccc-export160-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libisccc-export160-udeb",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libisccc160",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libisccc160-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libisccfg-export160",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libisccfg-export160-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libisccfg-export160-udeb",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libisccfg160",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "libisccfg160-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "liblwres160",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        },
        {
            "binary_name": "liblwres160-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.12"
        }
    ],
    "availability": "No subscription required",
    "ubuntu_priority": "medium"
}

Ubuntu:20.04:LTS / bind9

Package

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

Affected ranges

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

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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "bind9",
            "binary_version": "1:9.16.1-0ubuntu2.1"
        },
        {
            "binary_name": "bind9-dbgsym",
            "binary_version": "1:9.16.1-0ubuntu2.1"
        },
        {
            "binary_name": "bind9-dnsutils",
            "binary_version": "1:9.16.1-0ubuntu2.1"
        },
        {
            "binary_name": "bind9-dnsutils-dbgsym",
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