X-Recipient: archive-cygwin AT delorie DOT com DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:reply-to:date:from:to:subject:message-id :mime-version:content-type:content-transfer-encoding:sender; q= dns; s=default; b=C48T4OFWesuCqdWb7LYQ7vHgotF1nrPiqyZH04ys/6wUMi LZ8IhJnyIG70L5PfAmEfMB9PstQNYBOdgkwQAtwyKVkCL5T9l+qAcHS0Aq2EPKzI a3iejdz/fUoJ4TJr1y2ILf/WkAuM9SoHhEPYtTHye+H92iN5VIxlTRbojG7w8= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:reply-to:date:from:to:subject:message-id :mime-version:content-type:content-transfer-encoding:sender; s= default; bh=J0AIG/uvaPQ0BOcrW+LgiR4Q9KQ=; b=AnkbQdBcqFI7hjZpW87Y +hRqbnyuKGwVpVeIA61WARReYrMjLMjJYo0SXGETxNZYyJkE13CCm4pAqyhH7ZeF Ynt1NMmflljQFwXVmI47sV75Bs6q124N1zZHgfMHXcapCaV4pVAjb852SMCXC7HR 5O6aomVbS6uUaES3d8VqKbY= Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-1.6 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,KAM_ASCII_DIVIDERS,KAM_NUMSUBJECT autolearn=no version=3.3.2 spammy=HAuthentication-Results:auth, H*UA:Internet, HX-HELO:sk:localho X-HELO: localhost.localdomain Reply-To: cygwin AT cygwin DOT com Authentication-Results: sourceware.org; auth=none Date: Mon, 27 Aug 2018 20:56:11 +0200 From: Corinna Vinschen To: cygwin AT cygwin DOT com Subject: [ANNOUNCEMENT] Updated: openssl-1.0.2p-1 Message-Id: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline User-Agent: Mutt/1.9.2 (2017-12-15) Sender: qmail alias Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id w7RJ25JQ013287 Hi folks, I've updated the version of OpenSSL to 1.0.2p-1. This is a security bugfix release. ------------------------------------------------------------------------ Changes between 1.0.2o and 1.0.2p [14 Aug 2018] *) Client DoS due to large DH parameter During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack. This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken (CVE-2018-0732) [Guido Vranken] *) Cache timing vulnerability in RSA Key Generation The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to a cache timing side channel attack. An attacker with sufficient access to mount cache timing attacks during the RSA key generation process could recover the private key. This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia. (CVE-2018-0737) [Billy Brumley] *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str parameter is no longer accepted, as it leads to a corrupt table. NULL pem_str is reserved for alias entries only. [Richard Levitte] *) Revert blinding in ECDSA sign and instead make problematic addition length-invariant. Switch even to fixed-length Montgomery multiplication. [Andy Polyakov] *) Change generating and checking of primes so that the error rate of not being prime depends on the intended use based on the size of the input. For larger primes this will result in more rounds of Miller-Rabin. The maximal error rate for primes with more than 1080 bits is lowered to 2^-128. [Kurt Roeckx, Annie Yousar] *) Increase the number of Miller-Rabin rounds for DSA key generating to 64. [Kurt Roeckx] *) Add blinding to ECDSA and DSA signatures to protect against side channel attacks discovered by Keegan Ryan (NCC Group). [Matt Caswell] *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we now allow empty (zero character) pass phrases. [Richard Levitte] *) Certificate time validation (X509_cmp_time) enforces stricter compliance with RFC 5280. Fractional seconds and timezone offsets are no longer allowed. [Emilia Käsper] ------------------------------------------------------------------------ Have fun, Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Maintainer cygwin AT cygwin DOT com Red Hat -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple