National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2020-8617 Detail

Current Description

Using a specially-crafted message, an attacker may potentially cause a BIND server to reach an inconsistent state if the attacker knows (or successfully guesses) the name of a TSIG key used by the server. Since BIND, by default, configures a local session key even on servers whose configuration does not otherwise make use of it, almost all current BIND servers are vulnerable. In releases of BIND dating from March 2018 and after, an assertion check in tsig.c detects this inconsistent state and deliberately exits. Prior to the introduction of the check the server would continue operating in an inconsistent state, with potentially harmful results.

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
http://packetstormsecurity.com/files/157836/BIND-TSIG-Denial-Of-Service.html
http://www.openwall.com/lists/oss-security/2020/05/19/4 Mailing List Patch Third Party Advisory
https://kb.isc.org/docs/cve-2020-8617 Patch Vendor Advisory
https://security.netapp.com/advisory/ntap-20200522-0002/ Third Party Advisory
https://usn.ubuntu.com/4365-1/
https://usn.ubuntu.com/4365-2/
https://www.debian.org/security/2020/dsa-4689 Third Party Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-617 Reachable Assertion NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
9.0.0
Up to (including)
9.11.18
 cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
9.12.0
Up to (including)
9.12.4
 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)
9.13.0
Up to (including)
9.13.7
 cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
9.14.0
Up to (including)
9.14.11
 cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
9.15.0
Up to (including)
9.15.6
 cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
9.16.0
Up to (including)
9.16.2
 cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
9.17.0
Up to (including)
9.17.1

Configuration 2 ( hide )
 cpe:2.3:a:isc:bind:9.9.3:s1:*:*:supported_preview:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.10.5:s1:*:*:supported_preview:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.10.7:s1:*:*:supported_preview:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.11.3:s1:*:*:supported_preview:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.11.5:s3:*:*:supported_preview:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.11.5:s5:*:*:supported_preview:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.11.6:s1:*:*:supported_preview:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.11.7:s1:*:*:supported_preview:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.11.8:s1:*:*:supported_preview:*:*:*
     Show Matching CPE(s)

Configuration 3 ( hide )
 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:debian:debian_linux:10:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

7 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-8617
NVD Published Date:
05/19/2020
NVD Last Modified:
05/28/2020