From owner-svn-ports-all@freebsd.org Tue Dec 20 03:13:21 2016 Return-Path: Delivered-To: svn-ports-all@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 CA2F1C89B0D; Tue, 20 Dec 2016 03:13:21 +0000 (UTC) (envelope-from junovitch@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 807C0F75; Tue, 20 Dec 2016 03:13:21 +0000 (UTC) (envelope-from junovitch@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id uBK3DKol031372; Tue, 20 Dec 2016 03:13:20 GMT (envelope-from junovitch@FreeBSD.org) Received: (from junovitch@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id uBK3DKC5031370; Tue, 20 Dec 2016 03:13:20 GMT (envelope-from junovitch@FreeBSD.org) Message-Id: <201612200313.uBK3DKC5031370@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: junovitch set sender to junovitch@FreeBSD.org using -f From: Jason Unovitch Date: Tue, 20 Dec 2016 03:13:20 +0000 (UTC) To: ports-committers@freebsd.org, svn-ports-all@freebsd.org, svn-ports-head@freebsd.org Subject: svn commit: r428976 - 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-all@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for the ports tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Dec 2016 03:13:21 -0000 Author: junovitch Date: Tue Dec 20 03:13:20 2016 New Revision: 428976 URL: https://svnweb.freebsd.org/changeset/ports/428976 Log: Document Xen Security Advisory (XSA 204) Reported by: royger Security: CVE-2016-10013 Security: https://vuxml.FreeBSD.org/freebsd/942433db-c661-11e6-ae1b-002590263bf5.html Modified: head/security/vuxml/vuln.xml Modified: head/security/vuxml/vuln.xml ============================================================================== --- head/security/vuxml/vuln.xml Tue Dec 20 02:30:58 2016 (r428975) +++ head/security/vuxml/vuln.xml Tue Dec 20 03:13:20 2016 (r428976) @@ -58,6 +58,40 @@ Notes: * Do not forget port variants (linux-f10-libxml2, libxml2, etc.) --> + + xen-kernel -- x86: Mishandling of SYSCALL singlestep during emulation + + + xen-kernel + 4.7.1_2 + + + + +

The Xen Project reports:

+
The typical behaviour of singlestepping exceptions is determined at + the start of the instruction, with a #DB trap being raised at the + end of the instruction. SYSCALL (and SYSRET, although we don't + implement it) behave differently because the typical behaviour + allows userspace to escalate its privilege. (This difference in + behaviour seems to be undocumented.) Xen wrongly raised the + exception based on the flags at the start of the instruction.
+
Guest userspace which can invoke the instruction emulator can use + this flaw to escalate its privilege to that of the guest kernel.
+

+ + + + CVE-2016-10013 + http://xenbits.xen.org/xsa/advisory-204.html + + + 2016-12-19 + 2016-12-20 + + + atheme-services -- multiple vulnerabilities