Ruby could allow for internet traffic to be modified if a vulnerable application processed malicious user input.. =========================================================================Ubuntu Security Notice USN-5806-3 March 20, 2023 ruby2.7 vulnerability ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS Summary: Ruby could allow for internet traffic to be modified if a vulnerable application processed malicious user input. Software Description: - ruby2.7: Object-oriented scripting language Details: USN-5806-1 fixed vulnerabilities in Ruby. This update fixes the problem for Ubuntu 20.04 LTS. Original advisory details: Hiroshi Tokumaru discovered that Ruby did not properly handle certain user input for applications which generate HTTP responses using cgi gem. An attacker could possibly use this issue to maliciously modify the response a user would receive from a vulnerable application. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: libruby2.7 2.7.0-5ubuntu1.8 ruby2.7 2.7.0-5ubuntu1.8 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5806-3 https://ubuntu.com/security/notices/USN-5806-1 CVE-2021-33621 Package Information: https://launchpad.net/ubuntu/+source/ruby2.7/2.7.0-5ubuntu1.8 . A flaw in Ruby on Ubuntu 20.04 LTS may affect web traffic. Ensure your system is updated for protection.. Ubuntu Ruby Security, HTTP Response Modification, Malicious Input Risk. . LinuxSecurity.com Team
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