- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201611-10 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: libuv: Privilege escalation Date: November 17, 2016 Bugs: #540826 ID: 201611-10 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== A vulnerability in libuv could lead to privilege escalation. Background ========== libuv is a multi-platform support library with a focus on asynchronous I/O. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-libs/libuv < 1.4.2 >= 1.4.2 Description =========== It was discovered that libuv does not call setgroups before calling setuid/setgid. If this is not called, then even though the uid has been dropped, there may still be groups associated that permit superuser privileges. Impact ====== Context-dependent attackers could escalate privileges via unspecified vectors. Workaround ========== There is no known workaround at this time. Resolution ========== All libuv users should upgrade to the latest version: # emerge --sync # emerge --ask --verbose --oneshot ">=dev-libs/libuv-1.4.2" References ========== [ 1 ] CVE-2015-0278 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-0278 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201611-10 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 2016 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. http://creativecommons.org/licenses/by-sa/2.5