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Test ID:1.3.6.1.4.1.25623.1.0.144435
Category:Denial of Service
Title:ISC BIND DoS Vulnerability (CVE-2020-8620) - Linux
Summary:ISC BIND is prone to a denial of service vulnerability.
Description:Summary:
ISC BIND is prone to a denial of service vulnerability.

Vulnerability Insight:
In versions of BIND that use the libuv network manager an incorrectly specified
maximum buffer size allows a specially crafted large TCP payload to trigger an assertion failure when it is received.

Vulnerability Impact:
An attacker who can establish a TCP connection with the server and send data on
that connection can exploit this to trigger the assertion failure, causing the server to exit.

Affected Software/OS:
BIND 9.15.6 - 9.16.5 and 9.17.0 - 9.17.3.

Solution:
Update to version 9.16.6, 9.17.4 or later.

CVSS Score:
5.0

CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2020-8620
https://kb.isc.org/docs/cve-2020-8620
https://security.gentoo.org/glsa/202008-19
SuSE Security Announcement: openSUSE-SU-2020:1699 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html
SuSE Security Announcement: openSUSE-SU-2020:1701 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html
https://usn.ubuntu.com/4468-1/
CopyrightCopyright (C) 2020 Greenbone Networks GmbH

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