Korean
<< Back
VID 19093
Severity 30
Port 53
Protocol UDP
Class DNS
Detailed Description According to its self-reported version number, the installation of ISC BIND running on the remote name server is version 9.15.6 prior to 9.16.6 or 9.17.x prior to 9.17.4. It is, therefore, affected by a denial of service (DoS) vulnerability due to an incorrectly specified maximum buffer size. An unauthenticated, remote attacker can exploit this issue by sending a specially crafted large TCP payload to trigger an assertion failure, causing the server to exit.

* References:
https://kb.isc.org/docs/cve-2020-8620

* Platforms Affected:
ISC BIND versions prior to 9.16.6
Microsoft Windows Any version
Recommendation Upgrade to the latest version ISC BIND (9.16.6 or later)
Related URL CVE-2020-8620 (CVE)
Related URL (SecurityFocus)
Related URL (ISS)