--- title: 'USN-6287-1: Go yaml vulnerabilities | Ubuntu security notices' description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/notices/USN-6287-1 --- 1. [Ubuntu Security Notices](https://ubuntu.com/security/notices) 2. USN-6287-1 --- # USN-6287-1: Go yaml vulnerabilities Publication date 14 August 2023 Overview Several security issues were patched in the Go yaml package. Releases [20.04 LTS](https://ubuntu.com/security/notices?release=focal) [18.04 LTS](https://ubuntu.com/security/notices?release=bionic) [16.04 LTS](https://ubuntu.com/security/notices?release=xenial) --- Open side navigation ## Packages * [golang-yaml.v2](https://ubuntu.com/security/cves?package=golang-yaml.v2) - YAML support for the Go language ## Details Simon Ferquel discovered that the Go yaml package incorrectly handled certain YAML documents. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to cause the system to crash, resulting in a denial of service. ([CVE-2021-4235](https://ubuntu.com/security/CVE-2021-4235)) It was discovered that the Go yaml package incorrectly handled certain large YAML documents. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to cause the system to crash, resulting in a denial of service. ([CVE-2022-3064](https://ubuntu.com/security/CVE-2022-3064)) ## Update instructions After a standard system update anything that depends on golang-yaml.v2 needs to be rebuilt to make all the necessary changes. [Learn more about how to get the fixes.](https://ubuntu.com/security/cves/about#security) The problem can be corrected by updating your system to the following package versions: | Ubuntu Release | Package Version | | --- | --- | | 20.04 LTS focal | [golang-gopkg-yaml.v2-dev](https://launchpad.net/ubuntu/+source/golang-yaml.v2) –  [2.2.2-1ubuntu0.1](https://launchpad.net/ubuntu/+source/golang-yaml.v2/2.2.2-1ubuntu0.1) | | | | [golang-yaml.v2-dev](https://launchpad.net/ubuntu/+source/golang-yaml.v2) –  [2.2.2-1ubuntu0.1](https://launchpad.net/ubuntu/+source/golang-yaml.v2/2.2.2-1ubuntu0.1) | | | | 18.04 LTS bionic | [golang-gopkg-yaml.v2-dev](https://launchpad.net/ubuntu/+source/golang-yaml.v2) –  0.0+git20170407.0.cd8b52f-1ubuntu2+esm1   Ubuntu Pro | | | | [golang-yaml.v2-dev](https://launchpad.net/ubuntu/+source/golang-yaml.v2) –  0.0+git20170407.0.cd8b52f-1ubuntu2+esm1   Ubuntu Pro | | | | 16.04 LTS xenial | [golang-yaml.v2-dev](https://launchpad.net/ubuntu/+source/golang-yaml.v2) –  0.0+git20160301.0.a83829b-1ubuntu0.1~esm1   Ubuntu Pro | | | --- ### Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines. [Get Ubuntu Pro](https://ubuntu.com/pro) ## References * [CVE-2022-3064](https://ubuntu.com/security/CVE-2022-3064) * [CVE-2021-4235](https://ubuntu.com/security/CVE-2021-4235)