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Ubuntu 21.10 USN-5328-1 Critical: OpenSSL Denial Of Service

OpenSSL could be made to stop responding if it opened a specially crafted certificate.. =========================================================================Ubuntu Security Notice USN-5328-1 March 15, 2022 openssl, openssl1.0 vulnerability ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.10 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: OpenSSL could be made to stop responding if it opened a specially crafted certificate. Software Description: - openssl: Secure Socket Layer (SSL) cryptographic library and tools - openssl1.0: Secure Socket Layer (SSL) cryptographic library and tools Details: Tavis Ormandy discovered that OpenSSL incorrectly parsed certain certificates. A remote attacker could possibly use this issue to cause OpenSSH to stop responding, resulting in a denial of service. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 21.10: libssl1.1 1.1.1l-1ubuntu1.2 Ubuntu 20.04 LTS: libssl1.1 1.1.1f-1ubuntu2.12 Ubuntu 18.04 LTS: libssl1.0.0 1.0.2n-1ubuntu5.8 libssl1.1 1.1.1-1ubuntu2.1~18.04.15 After a standard system update you need to reboot your computer to make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5328-1 CVE-2022-0778 Package Information: https://launchpad.net/ubuntu/+source/openssl/1.1.1l-1ubuntu1.2 https://launchpad.net/ubuntu/+source/openssl/1.1.1f-1ubuntu2.12 https://launchpad.net/ubuntu/+source/openssl/1.1.1-1ubuntu2.1~18.04.15 https://launchpad.net/ubuntu/+source/openssl1.0/1.0.2n-1ubuntu5.8 . The Ubuntu Security Notice USN-5329-1 concerns a vulnerability in OpenSSL that has the potential to lead to denial of service through specially designed certificates.. OpenSSL Vulnerability, Ubuntu Security, Denial OfService Attack. . Severity: Critical. LinuxSecurity.com Team

Mar 15, 2022 •Critical Ubuntu