CVE-2019-11482: 
Linux Ubuntu vulnerability analysis and mitigation

CVE-2019-11482 is a time of check to time of use (TOCTTOU) vulnerability discovered by Sander Bos in the Apport crash reporting system. The vulnerability was identified in 2019 and affects multiple versions of Ubuntu operating systems. This security flaw specifically involves a race condition in Apport during core dump creation (NVD, Ubuntu).

The vulnerability is characterized as a race condition that occurs during core dump creation in Apport. It has been assigned a CVSS 3.1 Base Score of 4.7 (Medium), with the following metrics: Attack Vector: Local, Attack Complexity: High, Privileges Required: Low, User Interaction: None, Scope: Unchanged, Confidentiality: High, Integrity: None, Availability: None (Ubuntu).

The vulnerability allows a local attacker to generate a crash report for a privileged process that becomes readable by an unprivileged user. This creates a potential information disclosure risk where sensitive information from privileged processes could be exposed to unauthorized users (Ubuntu Notice).

The vulnerability has been fixed in multiple Ubuntu versions with the following package updates: Ubuntu 19.10 (2.20.11-0ubuntu8.1), Ubuntu 19.04 (2.20.10-0ubuntu27.2), Ubuntu 18.04 LTS (2.20.9-0ubuntu7.8), Ubuntu 16.04 LTS (2.20.1-0ubuntu2.20), and Ubuntu 14.04 LTS (2.14.1-0ubuntu3.29+esm2). Users are advised to update their systems to the latest package versions through standard system updates (Ubuntu Notice).