- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202105-33 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: containerd: Multiple vulnerabilities Date: May 26, 2021 Bugs: #758137, #775329 ID: 202105-33 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities have been found in containerd, the worst of which could result in privilege escalation. Background ========== Containerd is a daemon with an API and a command line client, to manage containers on one machine. It uses runC to run containers according to the OCI specification. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-emulation/containerd < 1.4.4 >= 1.4.4 Description =========== Multiple vulnerabilities have been discovered in containerd. Please review the CVE identifiers referenced below for details. Impact ====== A local attacker, able to run a malicious container in the same network namespace as the shim, could possibly escalate privileges. Furthermore, an attacker could disclose sensitive information. Workaround ========== There is no known workaround at this time. Resolution ========== All containerd users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-emulation/containerd-1.4.4" References ========== [ 1 ] CVE-2020-15257 https://nvd.nist.gov/vuln/detail/CVE-2020-15257 [ 2 ] CVE-2021-21334 https://nvd.nist.gov/vuln/detail/CVE-2021-21334 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202105-33 Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org. License ======= Copyright 2021 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. https://creativecommons.org/licenses/by-sa/2.5