National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2019-6477 Detail

Current Description

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).

Source:  MITRE
View Analysis Description

Severity

 


CVSS 3.x Severity and Metrics:

NIST CVSS score matches with CNA score
CNA:  Internet Systems Consortium (ISC)
Base Score: 7.5 HIGH
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://kb.isc.org/docs/cve-2019-6477 Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L3DEMNZMKR57VQJCG5ZN55ZGTQRL2TFQ/ Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XGURMGQHX45KR4QDRCSUQHODUFOGNGAN/ Third Party Advisory
https://support.f5.com/csp/article/K15840535?utm_source=f5support&utm_medium=RSS Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_19_39 Third Party Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-400 Uncontrolled Resource Consumption NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:isc:bind:9.11.5:s6:*:*:supported_preview:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.11.6:p1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.11.6:rc1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
9.11.7		Up to (including)
9.11.12
 cpe:2.3:a:isc:bind:9.11.12:s1:*:*:supported_preview:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.12.4:p1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.12.4:p2:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
9.14.1		Up to (including)
9.14.7
 cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
9.15.0		Up to (including)
9.15.5

Configuration 2 ( hide )
 cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-6477
NVD Published Date:
11/26/2019
NVD Last Modified:
12/18/2019