the ultimate security vulnerability data source
(e.g.: CVE-2009-1234 or 2010-1234 or 20101234)
Log In   Register
  Take a third party risk management course for FREE
Vulnerability Feeds & WidgetsNew  

Vulnerability Details : CVE-2020-8617

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.
Publish Date : 2020-05-19 Last Update Date : 2020-10-20
Search Twitter   Search YouTube   Search Google

- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 617

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2020:2338: bind security update (Important) oval:com.redhat.rhsa:def:20202338 unix
RHSA-2020:2344: bind security update (Important) oval:com.redhat.rhsa:def:20202344 unix
RHSA-2020:2383: bind security update (Important) oval:com.redhat.rhsa:def:20202383 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2020-8617

# Product Type Vendor Product Version Update Edition Language
1 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
2 OS Debian Debian Linux 10.0 * * * Version Details Vulnerabilities
3 Application ISC Bind * * * * Version Details Vulnerabilities
4 Application ISC Bind 9.9.3 S1 * * Version Details Vulnerabilities
5 Application ISC Bind 9.10.5 S1 * * Version Details Vulnerabilities
6 Application ISC Bind 9.10.7 S1 * * Version Details Vulnerabilities
7 Application ISC Bind 9.11.3 S1 * * Version Details Vulnerabilities
8 Application ISC Bind 9.11.5 S5 * * Version Details Vulnerabilities
9 Application ISC Bind 9.11.5 S3 * * Version Details Vulnerabilities
10 Application ISC Bind 9.11.6 S1 * * Version Details Vulnerabilities
11 Application ISC Bind 9.11.7 S1 * * Version Details Vulnerabilities
12 Application ISC Bind 9.11.8 S1 * * Version Details Vulnerabilities
13 Application ISC Bind 9.12.4 P1 * * Version Details Vulnerabilities
14 Application ISC Bind 9.12.4 P2 * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Debian Debian Linux 2
ISC Bind 12

- References For CVE-2020-8617 CONFIRM
MLIST [oss-security] 20200519 Two vulnerabilities disclosed in BIND (CVE-2020-8616 and CVE-2020-8617)
MLIST [debian-lts-announce] 20200530 [SECURITY] [DLA 2227-1] bind9 security update[email protected]/message/WOGCJS2XQ3SQNF4W6GLZ73LWZJ6ZZWZI/
FEDORA FEDORA-2020-2d89cbcfd9[email protected]/message/JKJXVBOKZ36ER3EUCR7VRB7WGHIIMPNJ/
FEDORA FEDORA-2020-f9dcd4e9d5
SUSE openSUSE-SU-2020:1699
SUSE openSUSE-SU-2020:1701

- Metasploit Modules Related To CVE-2020-8617

There are not any metasploit modules related to this CVE entry (Please visit for more information)

CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site. OVAL is a registered trademark of The MITRE Corporation and the authoritative source of OVAL content is MITRE's OVAL web site.
Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.