========================================================================== Ubuntu Security Notice USN-5147-1 November 15, 2021 vim vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.10 - Ubuntu 21.04 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 ESM - Ubuntu 14.04 ESM Summary: Several security issues were fixed in Vim. Software Description: - vim: Vi IMproved - enhanced vi editor Details: It was discovered that Vim incorrectly handled permissions on the .swp file. A local attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 14.04 ESM. (CVE-2017-17087) It was discovered that Vim incorrectly handled restricted mode. A local attacker could possibly use this issue to bypass restricted mode and execute arbitrary commands. Note: This update only makes executing shell commands more difficult. Restricted mode should not be considered a complete security measure. This issue only affected Ubuntu 14.04 ESM. (CVE-2019-20807) Brian Carpenter discovered that vim incorrectly handled memory when opening certain files. If a user was tricked into opening a specially crafted file, a remote attacker could crash the application, leading to a denial of service, or possible execute arbitrary code with user privileges. This issue only affected Ubuntu 20.04 LTS, Ubuntu 21.04 and Ubuntu 21.10. (CVE-2021-3872) It was discovered that vim incorrectly handled memory when opening certain files. If a user was tricked into opening a specially crafted file, a remote attacker could crash the application, leading to a denial of service, or possible execute arbitrary code with user privileges. (CVE-2021-3903) It was discovered that vim incorrectly handled memory when opening certain files. If a user was tricked into opening a specially crafted file, a remote attacker could crash the application, leading to a denial of service, or possible execute arbitrary code with user privileges. (CVE-2021-3927) It was discovered that vim incorrectly handled memory when opening certain files. If a user was tricked into opening a specially crafted file, a remote attacker could crash the application, leading to a denial of service, or possible execute arbitrary code with user privileges. (CVE-2021-3928) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 21.10: vim 2:8.2.2434-3ubuntu3.1 Ubuntu 21.04: vim 2:8.2.2434-1ubuntu1.2 Ubuntu 20.04 LTS: vim 2:8.1.2269-1ubuntu5.4 Ubuntu 18.04 LTS: vim 2:8.0.1453-1ubuntu1.7 Ubuntu 16.04 ESM: vim 2:7.4.1689-3ubuntu1.5+esm3 Ubuntu 14.04 ESM: vim 2:7.4.052-1ubuntu3.1+esm4 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5147-1 CVE-2017-17087, CVE-2019-20807, CVE-2021-3872, CVE-2021-3903, CVE-2021-3927, CVE-2021-3928 Package Information: https://launchpad.net/ubuntu/+source/vim/2:8.2.2434-3ubuntu3.1 https://launchpad.net/ubuntu/+source/vim/2:8.2.2434-1ubuntu1.2 https://launchpad.net/ubuntu/+source/vim/2:8.1.2269-1ubuntu5.4 https://launchpad.net/ubuntu/+source/vim/2:8.0.1453-1ubuntu1.7