========================================================================== Ubuntu Security Notice USN-4468-2 August 24, 2020
bind9 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 14.04 ESM - Ubuntu 12.04 ESM Summary: Bind could be made to crash if it received a specially crafted request. Software Description: - bind9: Internet Domain Name Server Details: USN-4468-1 fixed a vulnerability in Bind. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. Original advisory details: Dave Feldman, Jeff Warren, and Joel Cunningham discovered that Bind incorrectly handled certain truncated responses to a TSIG-signed request. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. (CVE-2020-8622) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 ESM: bind9 1:9.9.5.dfsg-3ubuntu0.19+esm3 Ubuntu 12.04 ESM: bind9 1:9.8.1.dfsg.P1-4ubuntu0.31 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/4468-2 https://usn.ubuntu.com/4468-1 CVE-2020-8622
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