UBUNTU-CVE-2019-6477

See a problem?
Source
https://ubuntu.com/security/notices/UBUNTU-CVE-2019-6477
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-6477.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2019-6477
Related
Published
2019-11-20T00:00:00Z
Modified
2019-11-20T00:00:00Z
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
Summary
[none]
Details

With pipelining enabled each incoming query on a TCP connection requires a similar resource allocation to a query received via UDP or via TCP without pipelining enabled. A client using a TCP-pipelined connection to a server could consume more resources than the server has been provisioned to handle. When a TCP connection with a large number of pipelined queries is closed, the load on the server releasing these multiple resources can cause it to become unresponsive, even for queries that can be answered authoritatively or from cache. (This is most likely to be perceived as an intermittent server problem).

References

Affected packages

Ubuntu:18.04:LTS / bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9@1:9.11.3+dfsg-1ubuntu1.11?arch=src?distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:9.11.3+dfsg-1ubuntu1.11

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

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "bind9-host-dbgsym": "1:9.11.3+dfsg-1ubuntu1.11",
            "libbind9-160-dbgsym": "1:9.11.3+dfsg-1ubuntu1.11",
            "libisccfg160-dbgsym": "1:9.11.3+dfsg-1ubuntu1.11",
            "libisc-export169-dbgsym": "1:9.11.3+dfsg-1ubuntu1.11",
            "libdns1100-dbgsym": "1:9.11.3+dfsg-1ubuntu1.11",
            "bind9utils": "1:9.11.3+dfsg-1ubuntu1.11",
            "libdns-export1100": "1:9.11.3+dfsg-1ubuntu1.11",
            "bind9-dbgsym": "1:9.11.3+dfsg-1ubuntu1.11",
            "libisccc-export160": "1:9.11.3+dfsg-1ubuntu1.11",
            "libisccfg-export160": "1:9.11.3+dfsg-1ubuntu1.11",
            "liblwres160": "1:9.11.3+dfsg-1ubuntu1.11",
            "libirs-export160": "1:9.11.3+dfsg-1ubuntu1.11",
            "bind9utils-dbgsym": "1:9.11.3+dfsg-1ubuntu1.11",
            "libisccc-export160-dbgsym": "1:9.11.3+dfsg-1ubuntu1.11",
            "libirs160": "1:9.11.3+dfsg-1ubuntu1.11",
            "libisccfg-export160-udeb": "1:9.11.3+dfsg-1ubuntu1.11",
            "libisc-export169": "1:9.11.3+dfsg-1ubuntu1.11",
            "libisc169-dbgsym": "1:9.11.3+dfsg-1ubuntu1.11",
            "dnsutils-dbgsym": "1:9.11.3+dfsg-1ubuntu1.11",
            "libbind-export-dev": "1:9.11.3+dfsg-1ubuntu1.11",
            "libdns1100": "1:9.11.3+dfsg-1ubuntu1.11",
            "libisccc160": "1:9.11.3+dfsg-1ubuntu1.11",
            "libdns-export1100-dbgsym": "1:9.11.3+dfsg-1ubuntu1.11",
            "libdns-export1100-udeb": "1:9.11.3+dfsg-1ubuntu1.11",
            "liblwres160-dbgsym": "1:9.11.3+dfsg-1ubuntu1.11",
            "libirs-export160-udeb": "1:9.11.3+dfsg-1ubuntu1.11",
            "bind9": "1:9.11.3+dfsg-1ubuntu1.11",
            "libisc169": "1:9.11.3+dfsg-1ubuntu1.11",
            "libbind-dev": "1:9.11.3+dfsg-1ubuntu1.11",
            "libirs-export160-dbgsym": "1:9.11.3+dfsg-1ubuntu1.11",
            "libisccc-export160-udeb": "1:9.11.3+dfsg-1ubuntu1.11",
            "libisc-export169-udeb": "1:9.11.3+dfsg-1ubuntu1.11",
            "bind9-doc": "1:9.11.3+dfsg-1ubuntu1.11",
            "libirs160-dbgsym": "1:9.11.3+dfsg-1ubuntu1.11",
            "libisccfg160": "1:9.11.3+dfsg-1ubuntu1.11",
            "libbind9-160": "1:9.11.3+dfsg-1ubuntu1.11",
            "libisccc160-dbgsym": "1:9.11.3+dfsg-1ubuntu1.11",
            "bind9-host": "1:9.11.3+dfsg-1ubuntu1.11",
            "libisccfg-export160-dbgsym": "1:9.11.3+dfsg-1ubuntu1.11",
            "dnsutils": "1:9.11.3+dfsg-1ubuntu1.11"
        }
    ]
}