Stay Secure with the Latest Linux Advisories

security advisorygentooremote access

Gentoo: GLSA-201408-14 Normal: Stunnel Information Disclosure

A vulnerability in stunnel might allow remote attackers to gain access to private key information.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201408-14 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: stunnel: Information disclosure Date: August 29, 2014 Bugs: #503506 ID: 201408-14 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= A vulnerability in stunnel might allow remote attackers to gain access to private key information. Background ========= The stunnel program is designed to work as an SSL encryption wrapper between a client and a local or remote server. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/stunnel < 5.02 > = 5.02 Description ========== stunnel does not properly update the state of the pseudo-random generator after fork-threading which causes subsequent children with the same process ID to use the same entropy pool. ECDSA and DSA keys, when not used in deterministic mode (RFC6979), rely on random data for its k parameter to not leak private key information. Impact ===== A remote attacker may gain access to private key information from ECDSA or DSA keys. Workaround ========= There is no known workaround at this time. Resolution ========= All stunnel users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =net-misc/stunnel-5.02" References ========= [ 1 ] CVE-2014-0016 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-0016 Availability =========== ThisGLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201408-14 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 This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at https://bugs.gentoo.org. License ====== Copyright 2014 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/ . Potential exposure of private key data could occur due to a vulnerability in stunnel's information security. It is advisable to perform an upgrade.. Stunnel Vulnerability,Gentoo Security Advisory,Key Access Risks. . LinuxSecurity.com Team

Aug 29, 2014 Gentoo