From owner-svn-ports-head@freebsd.org Sat Mar 5 13:09:50 2016 Return-Path: Delivered-To: svn-ports-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 70471A09395; Sat, 5 Mar 2016 13:09:50 +0000 (UTC) (envelope-from rakuco@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 27C7CEE0; Sat, 5 Mar 2016 13:09:50 +0000 (UTC) (envelope-from rakuco@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id u25D9nk1017736; Sat, 5 Mar 2016 13:09:49 GMT (envelope-from rakuco@FreeBSD.org) Received: (from rakuco@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id u25D9noU017735; Sat, 5 Mar 2016 13:09:49 GMT (envelope-from rakuco@FreeBSD.org) Message-Id: <201603051309.u25D9noU017735@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: rakuco set sender to rakuco@FreeBSD.org using -f From: Raphael Kubo da Costa Date: Sat, 5 Mar 2016 13:09:49 +0000 (UTC) To: ports-committers@freebsd.org, svn-ports-all@freebsd.org, svn-ports-head@freebsd.org Subject: svn commit: r410177 - head/security/vuxml X-SVN-Group: ports-head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-ports-head@freebsd.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: SVN commit messages for the ports tree for head List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 05 Mar 2016 13:09:50 -0000 Author: rakuco Date: Sat Mar 5 13:09:48 2016 New Revision: 410177 URL: https://svnweb.freebsd.org/changeset/ports/410177 Log: Add entry for security/libssh's CVE-2016-0739. This was fixed in r409932, but the 2016Q1 branch is still vulnerable. Modified: head/security/vuxml/vuln.xml Modified: head/security/vuxml/vuln.xml ============================================================================== --- head/security/vuxml/vuln.xml Sat Mar 5 12:46:59 2016 (r410176) +++ head/security/vuxml/vuln.xml Sat Mar 5 13:09:48 2016 (r410177) @@ -58,6 +58,44 @@ Notes: * Do not forget port variants (linux-f10-libxml2, libxml2, etc.) --> + + libssh -- weak Diffie-Hellman secret generation + + + libssh + 0.7.3 + + + + +

Andreas Schneider reports:

+
libssh versions 0.1 and above have a bits/bytes confusion bug and + generate the an anormaly short ephemeral secret for the + diffie-hellman-group1 and diffie-hellman-group14 key exchange + methods. The resulting secret is 128 bits long, instead of the + recommended sizes of 1024 and 2048 bits respectively. There are + practical algorithms (Baby steps/Giant steps, Pollard’s rho) that can + solve this problem in O(2^63) operations.
+
Both client and server are are vulnerable, pre-authentication. + This vulnerability could be exploited by an eavesdropper with enough + resources to decrypt or intercept SSH sessions. The bug was found + during an internal code review by Aris Adamantiadis of the libssh + team.
+

+ + + + CVE-2016-0739 + https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-0739 + https://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/ + + + 2016-02-23 + 2016-03-05 + + + exim -- local privilleges escalation