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Vulnerability Details : CVE-2020-8622

In BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker on the network path for a TSIG-signed request, or operating the server receiving the TSIG-signed request, could send a truncated response to that request, triggering an assertion failure, causing the server to exit. Alternately, an off-path attacker would have to correctly guess when a TSIG-signed request was sent, along with other characteristics of the packet and message, and spoof a truncated response to trigger an assertion failure, causing the server to exit.
Publish Date : 2020-08-21 Last Update Date : 2021-12-02
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- 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 ???
Gained Access None
Vulnerability Type(s)
CWE ID 617

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2020:4183: bind security update (Moderate) oval:com.redhat.rhsa:def:20204183 unix
RHSA-2020:4500: bind security, bug fix, and enhancement update (Moderate) oval:com.redhat.rhsa:def:20204500 unix
RHSA-2020:5011: bind security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20205011 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-2020-8622

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 12.04 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 14.04 * * * Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 16.04 * * * Version Details Vulnerabilities
4 OS Canonical Ubuntu Linux 18.04 * * * Version Details Vulnerabilities
5 OS Canonical Ubuntu Linux 20.04 * * * Version Details Vulnerabilities
6 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
7 OS Debian Debian Linux 10.0 * * * Version Details Vulnerabilities
8 OS Fedoraproject Fedora 31 * * * Version Details Vulnerabilities
9 OS Fedoraproject Fedora 32 * * * Version Details Vulnerabilities
10 Application ISC Bind * * * * Version Details Vulnerabilities
11 Application ISC Bind 9.9.3 S1 * * Version Details Vulnerabilities
12 Application ISC Bind 9.11.21 S1 * * Version Details Vulnerabilities
13 Application Netapp Steelstore Cloud Integrated Storage - * * * Version Details Vulnerabilities
14 OS Opensuse Leap 15.1 * * * Version Details Vulnerabilities
15 OS Opensuse Leap 15.2 * * * Version Details Vulnerabilities
16 Application Oracle Communications Diameter Signaling Router * * * * Version Details Vulnerabilities
17 Application Synology Dns Server * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 5
Debian Debian Linux 2
Fedoraproject Fedora 2
ISC Bind 3
Netapp Steelstore Cloud Integrated Storage 1
Opensuse Leap 2
Oracle Communications Diameter Signaling Router 1
Synology Dns Server 1

- References For CVE-2020-8622
SUSE openSUSE-SU-2020:1699
SUSE openSUSE-SU-2020:1701 CONFIRM
GENTOO GLSA-202008-19
DEBIAN DSA-4752[email protected]/message/ZKAMJZXR66P6S5LEU4SN7USSNCWTXEXP/
FEDORA FEDORA-2020-14c194e5af
MLIST [debian-lts-announce] 20200829 [SECURITY] [DLA 2355-1] bind9 security update
FEDORA FEDORA-2020-a02b7a0f21

- Metasploit Modules Related To CVE-2020-8622

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

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