========================================================================= Ubuntu Security Notice USN-4568-1 October 05, 2020 brotli vulnerability ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS Summary: Brotli could be made to crash if it received a specially crafted input. Software Description: - brotli: lossless compression algorithm and format (command line utility) Details: It was discovered that Brotli incorrectly handled certain inputs. An attacker could possibly use this issue to cause a crash. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: brotli 1.0.7-6ubuntu0.1 libbrotli1 1.0.7-6ubuntu0.1 python3-brotli 1.0.7-6ubuntu0.1 Ubuntu 18.04 LTS: brotli 1.0.3-1ubuntu1.3 libbrotli1 1.0.3-1ubuntu1.3 python-brotli 1.0.3-1ubuntu1.3 python3-brotli 1.0.3-1ubuntu1.3 Ubuntu 16.04 LTS: brotli 1.0.3-1ubuntu1~16.04.2 libbrotli1 1.0.3-1ubuntu1~16.04.2 python-brotli 1.0.3-1ubuntu1~16.04.2 python3-brotli 1.0.3-1ubuntu1~16.04.2 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/4568-1 CVE-2020-8927 Package Information: https://launchpad.net/ubuntu/+source/brotli/1.0.7-6ubuntu0.1 https://launchpad.net/ubuntu/+source/brotli/1.0.3-1ubuntu1.3 https://launchpad.net/ubuntu/+source/brotli/1.0.3-1ubuntu1~16.04.2