========================================================================== Ubuntu Security Notice USN-5371-3 October 07, 2022
nginx vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.04 ESM Summary: A security issue was fixed in nginx's lua module. Software Description: - nginx: small, powerful, scalable web/proxy server Details: USN-5371-1 and USN-5371-2 fixed several vulnerabilities in nginx. This update provides the corresponding update for CVE-2020-11724 for Ubuntu 16.04 ESM. Original advisory details: It was discovered that nginx Lua module mishandled certain inputs. An attacker could possibly use this issue to perform an HTTP Request Smuggling attack. This issue was fixed for Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-11724) It was discovered that nginx Lua module mishandled certain inputs. An attacker could possibly use this issue to disclose sensitive information. This issue only affects Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-36309) It was discovered that nginx mishandled the use of compatible certificates among multiple encryption protocols. If a remote attacker were able to intercept the communication, this issue could be used to redirect traffic between subdomains. (CVE-2021-3618) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 ESM: nginx-core 1.10.3-0ubuntu0.16.04.5+esm4 nginx-extras 1.10.3-0ubuntu0.16.04.5+esm4 nginx-full 1.10.3-0ubuntu0.16.04.5+esm4 nginx-light 1.10.3-0ubuntu0.16.04.5+esm4 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5371-3 https://ubuntu.com/security/notices/USN-5371-1 CVE-2020-11724
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