UBUNTU-CVE-2018-5743

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Source

https://ubuntu.com/security/CVE-2018-5743

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-5743.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2018-5743

Upstream

CVE-2018-5743

Downstream

USN-3956-1

USN-3956-2

Related

Published

2019-04-24T00:00:00Z

Modified

2025-07-16T08:30:13.474214Z

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
7.5 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

By design, BIND is intended to limit the number of TCP clients that can be connected at any given time. The number of allowed connections is a tunable parameter which, if unset, defaults to a conservative value for most servers. Unfortunately, the code which was intended to limit the number of simultaneous connections contained an error which could be exploited to grow the number of simultaneous connections beyond this limit. Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.6, 9.12.0 -> 9.12.4, 9.14.0. BIND 9 Supported Preview Edition versions 9.9.3-S1 -> 9.11.5-S3, and 9.11.5-S5. Versions 9.13.0 -> 9.13.7 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5743.

References

Affected packages

Ubuntu:Pro:14.04:LTS / bind9

Package

Name: bind9
Purl: pkg:deb/ubuntu/bind9@1:9.9.5.dfsg-3ubuntu0.19+esm1?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+esm1

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

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "bind9",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm1"
        },
        {
            "binary_name": "bind9-doc",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm1"
        },
        {
            "binary_name": "bind9-host",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm1"
        },
        {
            "binary_name": "bind9utils",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm1"
        },
        {
            "binary_name": "dnsutils",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm1"
        },
        {
            "binary_name": "host",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm1"
        },
        {
            "binary_name": "libbind-dev",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm1"
        },
        {
            "binary_name": "libbind9-90",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm1"
        },
        {
            "binary_name": "libdns100",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm1"
        },
        {
            "binary_name": "libisc95",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm1"
        },
        {
            "binary_name": "libisccc90",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm1"
        },
        {
            "binary_name": "libisccfg90",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm1"
        },
        {
            "binary_name": "liblwres90",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm1"
        },
        {
            "binary_name": "lwresd",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm1"
        }
    ]
}

Ubuntu:16.04:LTS / bind9

Package

Name: bind9
Purl: pkg:deb/ubuntu/bind9@1:9.10.3.dfsg.P4-8ubuntu1.14?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:9.10.3.dfsg.P4-8ubuntu1.14

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

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "bind9",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "bind9-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "bind9-doc",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "bind9-host",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "bind9-host-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "bind9utils",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "bind9utils-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "dnsutils",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "dnsutils-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "host",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libbind-dev",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libbind-export-dev",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libbind9-140",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libbind9-140-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libdns-export162",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libdns-export162-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libdns-export162-udeb",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libdns-export162-udeb-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libdns162",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libdns162-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libirs-export141",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libirs-export141-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libirs-export141-udeb",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libirs-export141-udeb-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libirs141",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libirs141-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libisc-export160",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libisc-export160-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libisc-export160-udeb",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libisc-export160-udeb-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libisc160",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libisc160-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libisccc-export140",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libisccc-export140-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libisccc-export140-udeb",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libisccc-export140-udeb-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libisccc140",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libisccc140-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libisccfg-export140",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libisccfg-export140-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libisccfg-export140-udeb",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libisccfg-export140-udeb-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libisccfg140",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "libisccfg140-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "liblwres141",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "liblwres141-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "lwresd",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        },
        {
            "binary_name": "lwresd-dbgsym",
            "binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.14"
        }
    ]
}

Ubuntu:18.04:LTS / bind9

Package

Name: bind9
Purl: pkg:deb/ubuntu/bind9@1:9.11.3+dfsg-1ubuntu1.7?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:9.11.3+dfsg-1ubuntu1.7

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

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "bind9",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "bind9-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "bind9-doc",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "bind9-host",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "bind9-host-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "bind9utils",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "bind9utils-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "dnsutils",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "dnsutils-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libbind-dev",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libbind-export-dev",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libbind9-160",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libbind9-160-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libdns-export1100",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libdns-export1100-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libdns-export1100-udeb",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libdns1100",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libdns1100-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libirs-export160",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libirs-export160-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libirs-export160-udeb",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libirs160",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libirs160-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libisc-export169",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libisc-export169-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libisc-export169-udeb",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libisc169",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libisc169-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libisccc-export160",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libisccc-export160-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libisccc-export160-udeb",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libisccc160",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libisccc160-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libisccfg-export160",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libisccfg-export160-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libisccfg-export160-udeb",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libisccfg160",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "libisccfg160-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "liblwres160",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        },
        {
            "binary_name": "liblwres160-dbgsym",
            "binary_version": "1:9.11.3+dfsg-1ubuntu1.7"
        }
    ]
}