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Ubuntu 16.04 And 14.04: USN-5332-2 Critical Bind Cache Manipulation

Bind could be made to manipulate cache results.. =========================================================================Ubuntu Security Notice USN-5332-2 March 17, 2022 bind9 vulnerability ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.04 ESM - Ubuntu 14.04 ESM Summary: Bind could be made to manipulate cache results. Software Description: - bind9: Internet Domain Name Server Details: USN-5332-1 fixed a vulnerability in Bind. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Original advisory details: Xiang Li, Baojun Liu, Chaoyi Lu, and Changgen Zou discovered that Bind incorrectly handled certain bogus NS records when using forwarders. A remote attacker could possibly use this issue to manipulate cache results. (CVE-2021-25220) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 ESM: bind9 1:9.10.3.dfsg.P4-8ubuntu1.19+esm2 Ubuntu 14.04 ESM: bind9 1:9.9.5.dfsg-3ubuntu0.19+esm6 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5332-2 https://ubuntu.com/security/notices/USN-5332-1 CVE-2021-25220 . Ubuntu 14.04 and 16.04 have new updates available to fix a bind9 vulnerability that threatens cache integrity. Users should apply these fixes quickly to avoid data issues. bind9 update, ubuntu security, bind9 cache issue. . Severity: Critical. LinuxSecurity.com Team

Mar 17, 2022 •Critical Ubuntu