CVE-2020-8622 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Reference

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html https://kb.isc.org/docs/cve-2020-8622 https://lists.debian.org/debian-lts-announce/2020/08/msg00053.html https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DQN62GBMCIC5AY4KYADGXNKVY6AJKSJE/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZKAMJZXR66P6S5LEU4SN7USSNCWTXEXP/ https://security.gentoo.org/glsa/202008-19 https://security.netapp.com/advisory/ntap-20200827-0003/ https://usn.ubuntu.com/4468-1/ https://usn.ubuntu.com/4468-2/ https://www.debian.org/security/2020/dsa-4752 https://www.synology.com/security/advisory/Synology_SA_20_19

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5