- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202003-32 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Low Title: Libgcrypt: Side-channel attack Date: March 15, 2020 Bugs: #693108 ID: 202003-32 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== A vulnerability in Libgcrypt could allow a local attacker to recover sensitive information. Background ========== Libgcrypt is a general purpose cryptographic library derived out of GnuPG. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-libs/libgcrypt < 1.8.5 >= 1.8.5 Description =========== A timing attack was found in the way ECCDSA was implemented in Libgcrypt. Impact ====== A local man-in-the-middle attacker, during signature generation, could possibly recover the private key. Workaround ========== There is no known workaround at this time. Resolution ========== All Libgcrypt users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/libgcrypt-1.8.5" References ========== [ 1 ] CVE-2019-13627 https://nvd.nist.gov/vuln/detail/CVE-2019-13627 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202003-32 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 2020 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