From owner-freebsd-security-notifications@freebsd.org Tue Sep 15 23:32:33 2020 Return-Path: Delivered-To: freebsd-security-notifications@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 6F3933E3E0C for ; Tue, 15 Sep 2020 23:32:33 +0000 (UTC) (envelope-from security-advisories@freebsd.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2610:1c1:1:6074::16:84]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "freefall.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Brff92Llbz3ZQm; Tue, 15 Sep 2020 23:32:33 +0000 (UTC) (envelope-from security-advisories@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1600212753; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc; bh=HDEXKUBjskOUvl9pYxpNDLw07wwkmmoIabKHFOTrqUE=; b=N+MS8vpsTLPiIq1gkqvATsj/QuZS3uZ11pxaxxsinfj0bQeX5FWGT3GaEV68YMkGGPkcTi Wjqk0b/sB7PuOcblCwq3nR+X+eJ8o8S2PVmD8Ao9krmOmhmInzJoD3prwSsgrqQnywO7xV cv4GKElVw6g2GityLIKyj1ZvRK89XJz11VEcTtb4YjdXgx72IAGqaWWFIK1e19Ngbt20Pr H9GRO/JwmUMR3/NqOY7UOYmzO0QMu+XQTwQosRldu5bM995epE9cA5U+aE2vv8rgknZ3du qI4VJSga2ThwdJQdPUEX6rEXDXOtv+MKobqKQkegqD44MJUasreurR4WHACDyw== Received: by freefall.freebsd.org (Postfix, from userid 945) id 4954610F0D; Tue, 15 Sep 2020 23:32:33 +0000 (UTC) From: FreeBSD Security Advisories To: FreeBSD Security Advisories Subject: FreeBSD Security Advisory FreeBSD-SA-20:27.ure Reply-To: freebsd-security@freebsd.org Precedence: bulk Message-Id: <20200915233233.4954610F0D@freefall.freebsd.org> Date: Tue, 15 Sep 2020 23:32:33 +0000 (UTC) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1600212753; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc; bh=HDEXKUBjskOUvl9pYxpNDLw07wwkmmoIabKHFOTrqUE=; b=st0rcul1syTgtIGesd6SiJF6C2gjUNEFNUSNSiLWmVSnWwnegz27zURXZO1LpCvPd5Rs5r Pk2UGsvWSY8V2QM/LnTUcf453DVtd/tKiqEmE7fT84z+mKJsgkhicwgO6Om0aRAe2UcgdI x5jRPXLYDYeR44BNcxgmqIy7L0beD3KaZMTQ6S3Weq+2mScRHlMD84snLwz+yl+4C+oGO5 LtxW1lAnXBw1QS+yZW68A6kIMcO+VXPPQ8fxLIDVCqkmZwyVIdudadMB84qxfAgrNENLVf aQyUpiS5F5cLIXETiF4xYhJGbKzB45c+I39KcOtmxVcMJ2GoObc2Ls8oOawAXA== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1600212753; a=rsa-sha256; cv=none; b=aNzOfXReCgR7Stcah0Md6vLboi+fchc/vdO6Hfvuq/km0bozP7oshO5bZacTfECp9Q9chk 84TfViuPT0olVDee1thJuOpLOKKtxaNFaqg+BFIPCzGMrLdHemkZmuEdFcV3EiuPYMl2jM kga2c7REZ684JS/pMNSsNGdoeDTHteKySX0/I3R8SiNQ704PbtSZ1tbZKIu6A6GIaPZCrz ULa/uvZvxXu1xPqXKHiMoNYz5+QHvmED7kHNcYqK8ev0LHdyprMosf0+pleFxR3/0gQgK/ DGCal4CDajZOJBLzZRXjnZ3DXWE3NJJwNrLb5PKA1HcuSJwTGFBrU5ETO+qE6Q== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-BeenThere: freebsd-security-notifications@freebsd.org X-Mailman-Version: 2.1.33 List-Id: "Moderated Security Notifications \[moderated, low volume\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Sep 2020 23:32:33 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-20:27.ure Security Advisory The FreeBSD Project Topic: ure device driver susceptible to packet-in-packet attack Category: core Module: ure Announced: 2020-09-15 Credits: John-Mark Gurney Affects: All supported versions of FreeBSD. Corrected: 2020-09-14 19:39:43 UTC (stable/12, 12.2-STABLE) 2020-09-15 21:42:05 UTC (releng/12.2, 12.2-BETA1-p1) 2020-09-15 21:42:05 UTC (releng/12.1, 12.1-RELEASE-p10) 2020-09-15 00:22:30 UTC (stable/11, 11.4-STABLE) 2020-09-15 21:42:05 UTC (releng/11.4, 11.4-RELEASE-p4) 2020-09-15 21:42:05 UTC (releng/11.3, 11.3-RELEASE-p14) CVE Name: CVE-2020-7464 For general information regarding FreeBSD Security Advisories, including descriptions of the fields above, security branches, and the following sections, please visit . I. Background The ure(4) driver provides support for USB Ethernet adapters based on the Realtek RTL8152 and RTL8153 USB Ethernet controllers. II. Problem Description A programming error in the ure(4) device driver caused some Realtek USB Ethernet interfaces to incorrectly report packets with more than 2048 bytes in a single USB transfer as having a length of only 2048 bytes. An adversary can exploit this to cause the driver to misinterpret part of the payload of a large packet as a separate packet, and thereby inject packets across security boundaries such as VLANs. III. Impact An attacker that can send large frames (larger than 2048 bytes in size) to be received by the host (be it VLAN, or non-VLAN tagged packet), can inject arbitrary packets to be received and processed by the host. This includes spoofing packets from other hosts, or injecting packets to other VLANs than the host is on. IV. Workaround No workaround is available. However, an attacker needs to be able to inject large frames. If a switch can prevent large frames (>2048 bytes) from being received, or connecting the machine to a switch that does not forward large frames will mitigate this attack. V. Solution Upgrade your vulnerable system to a supported FreeBSD stable or release / security branch (releng) dated after the correction date, and reboot. Perform one of the following: 1) To update your vulnerable system via a binary patch: Systems running a RELEASE version of FreeBSD on the i386 or amd64 platforms can be updated via the freebsd-update(8) utility: # freebsd-update fetch # freebsd-update install # shutdown -r +10min "Rebooting for a security update" 2) To update your vulnerable system via a source code patch: The following patches have been verified to apply to the applicable FreeBSD release branches. a) Download the relevant patch from the location below, and verify the detached PGP signature using your PGP utility. [FreeBSD 12.1, FreeBSD 12.2] # fetch https://security.FreeBSD.org/patches/SA-20:27/ure.12.patch # fetch https://security.FreeBSD.org/patches/SA-20:27/ure.12.patch.asc # gpg --verify ure.12.patch.asc [FreeBSD 11.3, FreeBSD 11.4] # fetch https://security.FreeBSD.org/patches/SA-20:27/ure.11.patch # fetch https://security.FreeBSD.org/patches/SA-20:27/ure.11.patch.asc # gpg --verify ure.11.patch.asc b) Apply the patch. Execute the following commands as root: # cd /usr/src # patch < /path/to/patch c) Recompile your kernel as described in and reboot the system. VI. Correction details The following list contains the correction revision numbers for each affected branch. Branch/path Revision - ------------------------------------------------------------------------- stable/12/ r365730 releng/12.2/ r365778 releng/12.1/ r365778 stable/11/ r365738 releng/11.4/ r365778 releng/11.3/ r365778 - ------------------------------------------------------------------------- To see which files were modified by a particular revision, run the following command, replacing NNNNNN with the revision number, on a machine with Subversion installed: # svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base Or visit the following URL, replacing NNNNNN with the revision number: VII. References The latest revision of this advisory is available at -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEE/A6HiuWv54gCjWNV05eS9J6n5cIFAl9hOIxfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldEZD MEU4NzhBRTVBRkU3ODgwMjhENjM1NUQzOTc5MkY0OUVBN0U1QzIACgkQ05eS9J6n 5cJY9A//Z+Rt20iUnM79er+CYF4EQNrzR8dOKr2/6L5ho5L1kJt0MdZtamN+f5Bq Jpzem060oAv+0mgAiK3VR7unlkEk+wFNvMwhgItvI8l2TME3+n/A0nsYQkP9QPPp SwHmKcIAbwkdtv913zy7AGc/vE+2+D8x84WHp6WDhRmDVgU5QAPGgP4yv0qhgkpy L8ndLDte3tXMk0eWArxWTpMfxqKGmp9Cgy88QRoIpguazS+ocSVt6h3emxQPtTc/ 7SQOEqjg4IiEXW/t2SSDqB1cvNPmN82yJt4mQg1m8v/SjFjFQ2qgFC+47cYezI1F nLuoDw16kYUu65DyePiXfCsBwSjkLU1IgpBSgmmxjMzwoVgE7/9AtRqiCwe2xkEF E6c1VWAQAw2AiZmsISv8T9RNLegLnNjyhO9iSsaeuOfLbTIeQ9zbcUL6xgZB6AxO tk/fkt+NHwuRoXNx2SC959r+hwhdnrpgxTEphjCFuuMdMGKsxm3TQGdwD6ZvQ1r2 HkVV1m4ukgpxw8ONa88Lgo+2f1HZhZKWLzp3EsTA3LMpgk+5uJjIuL/ctuddscWY Do9VapPTIGxjZqABGtxJL7NrzCz2pXE0CHzAjFWD830kujgcdihe6FbJx0cJe3m8 +CxaGBXvSINHyPwgDArnKR3Hrd57/T6RSUWqsksB7fBCpmFdQaI= =S9sW -----END PGP SIGNATURE----- From owner-freebsd-security-notifications@freebsd.org Tue Sep 15 23:32:36 2020 Return-Path: Delivered-To: freebsd-security-notifications@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 9BB9D3E3C69 for ; Tue, 15 Sep 2020 23:32:36 +0000 (UTC) (envelope-from security-advisories@freebsd.org) Received: from freefall.freebsd.org (freefall.freebsd.org [96.47.72.132]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "freefall.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4BrffD3fQHz3ZYL; Tue, 15 Sep 2020 23:32:36 +0000 (UTC) (envelope-from security-advisories@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1600212756; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc; bh=mroCpUq5GiXAf4cE5aRc6Csh6IYEE/W1B5Jjb4tNN0A=; b=m7v38LrAxmPFx3Z8VAKsO1wtNqaPrwO23TwakPb07BfRadAneDsSQJbioYZ5/5mXj1UZEK 1bml6vhOniKo5Q1z6sNeW2rvreaq7c+xzJ2KjHOmFny442acde5tqTjrpF3WqMLDLqOAQ9 j7SBx+DUimyVib1N5TkfBVv+15e56JcN6LR74FhWmm0z9wq2rXE4mTKK05YkGI4ZPfBZ13 pCKwLEsTilIOG513DRb7hX7QXh5sVKX+INZIHQXgDKHVU454OU1ENR6pcrtXxzen7HN3wK VOu0kJOlauk0mZFoPAIT8IzY5urAMzpEgutyu6jwQcTh9IGp/n0RzHjOkW/oWw== Received: by freefall.freebsd.org (Postfix, from userid 945) id 760A310F0E; Tue, 15 Sep 2020 23:32:36 +0000 (UTC) From: FreeBSD Security Advisories To: FreeBSD Security Advisories Subject: FreeBSD Security Advisory FreeBSD-SA-20:28.bhyve_vmcs Reply-To: freebsd-security@freebsd.org Precedence: bulk Message-Id: <20200915233236.760A310F0E@freefall.freebsd.org> Date: Tue, 15 Sep 2020 23:32:36 +0000 (UTC) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1600212756; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc; bh=mroCpUq5GiXAf4cE5aRc6Csh6IYEE/W1B5Jjb4tNN0A=; b=LB8GD29rxnidZyV5AmpJdrccYZJ+t+524wyzNI62YZrDa6sENSUccZqGrl+mEfYkdZnP8H WzjT04E34zHCtWReIQYMecJms0mMfjsTenchmihbRkfYvsknLDbi4kaefPexHsSCEIyKHj UDjRoGSoZDFM39ooqVAK1nBC0Go52d0FNp+wrzK92TAk+pu3fLI50sx1HH7SMHukmfBqfS 7cwq8JneA+lBajiDDMrjABSMoSCAEQv/wi1eil63x7UMk9r/vFPVwgTudpohKPl3LHkk+d Ld6dgCqU+pAcfJw+9+Jaos1WXZ/YYDDMya22gAE9LiO7dMRJrcnGz9ef0m0xsw== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1600212756; a=rsa-sha256; cv=none; b=CH8RYkbdMI+XMF6WoX0wtyWvIJJeTyFlprflKeuEK0AoAOK1EZNykkl4P4iSYJA5Dl81/e ORqC7W36ceGeXKAqWmjbxOsFF5mpXvzbWRxrUUH1nllE3IsUfUqdZatzZSC/MDaPpkab6p sCt9dnkGfCh5P7cHIB4/D3zCEPLYnucyQCtz24y23ij7q7nLwwKr1mOvKnGix0K34oMpdi 971kzT/Ii3z+sv9FAAXow6tTMuUgfH4HtleWEZk35KsT4zRc6d5iCu+ZtZf+1/6kdAX+Kn tYt1Fk1Q/TIrVvOGXN0aOgWQXW4UCoj53rrH5ar9L0MHOuJfkUKy580LGif+AQ== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-BeenThere: freebsd-security-notifications@freebsd.org X-Mailman-Version: 2.1.33 List-Id: "Moderated Security Notifications \[moderated, low volume\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Sep 2020 23:32:36 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-20:28.bhyve_vmcs Security Advisory The FreeBSD Project Topic: bhyve privilege escalation via VMCS access Category: core Module: bhyve Announced: 2020-09-15 Credits: Patrick Mooney Affects: All supported versions of FreeBSD. Corrected: 2020-09-15 21:28:47 UTC (stable/12, 12.2-STABLE) 2020-09-15 21:43:41 UTC (releng/12.2, 12.2-BETA1-p1) 2020-09-15 21:43:41 UTC (releng/12.1, 12.1-RELEASE-p10) 2020-09-15 21:28:47 UTC (stable/11, 11.4-STABLE) 2020-09-15 21:43:41 UTC (releng/11.4, 11.4-RELEASE-p4) 2020-09-15 21:43:41 UTC (releng/11.3, 11.3-RELEASE-p14) CVE Name: CVE-2020-24718 For general information regarding FreeBSD Security Advisories, including descriptions of the fields above, security branches, and the following sections, please visit . I. Background bhyve(8) is a hypervisor that supports running a variety of guest operating systems in virtual machines on AMD and Intel CPUs. II. Problem Description AMD and Intel CPUs support hardware virtualization using specialized data structures that control various aspects of guest operation. These are the Virtual Machine Control Structure (VMCS) on Intel CPUs, and the Virtual Machine Control Block (VMCB) on AMD CPUs. Insufficient access controls allow root users, including those running in a jail, to change these data structures. III. Impact An attacker with host root access (including to a jailed bhyve instance) can use this vulnerability to achieve kernel code execution. IV. Workaround No workaround is available. This issue is likely of concern only to systems relying on running bhyve in jail(8) for security domain separation. V. Solution Upgrade your vulnerable system to a supported FreeBSD stable or release / security branch (releng) dated after the correction date, and reboot. Perform one of the following: 1) To update your vulnerable system via a binary patch: Systems running a RELEASE version of FreeBSD on the i386 or amd64 platforms can be updated via the freebsd-update(8) utility: # freebsd-update fetch # freebsd-update install # shutdown -r +10min "Rebooting for a security update" 2) To update your vulnerable system via a source code patch: The following patches have been verified to apply to the applicable FreeBSD release branches. a) Download the relevant patch from the location below, and verify the detached PGP signature using your PGP utility. # fetch https://security.FreeBSD.org/patches/SA-20:28/bhyve_vmcs.patch # fetch https://security.FreeBSD.org/patches/SA-20:28/bhyve_vmcs.patch.asc # gpg --verify bhyve_vmcs.patch.asc b) Apply the patch. Execute the following commands as root: # cd /usr/src # patch < /path/to/patch c) Recompile your kernel as described in and reboot the system. VI. Correction details The following list contains the correction revision numbers for each affected branch. Branch/path Revision - ------------------------------------------------------------------------- stable/12/ r365777 releng/12.2/ r365779 releng/12.1/ r365779 stable/11/ r365777 releng/11.4/ r365779 releng/11.3/ r365779 - ------------------------------------------------------------------------- To see which files were modified by a particular revision, run the following command, replacing NNNNNN with the revision number, on a machine with Subversion installed: # svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base Or visit the following URL, replacing NNNNNN with the revision number: VII. References The latest revision of this advisory is available at -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEE/A6HiuWv54gCjWNV05eS9J6n5cIFAl9hOJdfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldEZD MEU4NzhBRTVBRkU3ODgwMjhENjM1NUQzOTc5MkY0OUVBN0U1QzIACgkQ05eS9J6n 5cKJBQ//UOwIgcc2n+Yr0MrNIs2XzLjmKBsuVfIrFni0GGJFFSAUd7Kzw7oeY4ng e9JURtfV6NlU63QkaRw+QqgvnXm5vLbgO+oWuedsj33eNgUNdUinZinieZuFAyAt BBgfMJ3D9X7HffIw1iKN/DWaealFJ1SHtKYzVssTBx/7ju+SFj5HkwLh/7QzKBYO CoeNE7RN2kSDmvvEKMdN17QyM4+H3wYpsnylWHa89slIe1xj0eVqgnGw2NrjjKlV N2DAQM+MvdJ+W8oA0idEvBZj55uHV9OlgIwJCDi0/u5yHPJkhuYYuHsf0oyW+NT6 gWvzwTI27IAAyYKK57pGVP7x4sy8VhsDItzqubhDqa/zjNZM9SYOtLYiOnDjev2B nqC2mV08XpC9lfwd3EDPGv+FYbTTe9OzirlJBnbMnwhj/p0sPMYCtuWKp/MyQyyD 1yhUJJlZgI6HdrTOOeqhObNDtEz75MI1bpLVmjq9VMLz1PtzdNFDcNmyvtTOpMut vZDFgCqtkpcukqxfqV1EJAWr0UWnaUyPc0klbmLwrQCpTWDOBT7QK+S5ZtNLQqu4 c6UJ7CQLNPn9nEjf16D8dZ1Iy3AJyPmtv7ehEkKFjJtNIwitCx/AIzKiXXzzxe56 boJoQL0pmgJkv3tjP5dEMeSx5SA4mrhtKCL+ri3/ZFXHxtcDNsQ= =Jluz -----END PGP SIGNATURE----- From owner-freebsd-security-notifications@freebsd.org Tue Sep 15 23:32:47 2020 Return-Path: Delivered-To: freebsd-security-notifications@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 879883E3CBF for ; Tue, 15 Sep 2020 23:32:47 +0000 (UTC) (envelope-from security-advisories@freebsd.org) Received: from freefall.freebsd.org (freefall.freebsd.org [96.47.72.132]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "freefall.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4BrffR2lTgz3Zcd; Tue, 15 Sep 2020 23:32:47 +0000 (UTC) (envelope-from security-advisories@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1600212767; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc; bh=/DAJp4uq+7ADOTtZMf7fq/pFydSdSdhP6lk4LRnmjOs=; b=eohg42to64NVm+Pq4VTQj6lr/rMLZVl5B1tWcFw2GDOJULCil0RcsN14S7dFN8HZ0j+++T u85XlsG9Bj7zdwsxkBfMrwMuwRifeh0TJwxDXrM36I+Esz39srp1JkDN5s7b6rDNHrQMxe ihF0zKmYCluLKGDBrIANHRXLrh/39GCct0ILC65gzcFHbdFaC+kNB+Q4ItYA+kW7m0PSyg 9SpzBLRRKXM/ErKbqSg4mvo7l+kSbWCFn1vdoFAuK/jAGGvMBQ6C6gi0zu10/wk+YE12Ic kSEEvE6ZQbqceumNOjTU6iPGif6OEwkffrX9AhGg2PozFvkcp3/W4yEM4aKGYg== Received: by freefall.freebsd.org (Postfix, from userid 945) id 3DA3210F29; Tue, 15 Sep 2020 23:32:47 +0000 (UTC) From: FreeBSD Security Advisories To: FreeBSD Security Advisories Subject: FreeBSD Security Advisory FreeBSD-SA-20:29.bhyve_svm Reply-To: freebsd-security@freebsd.org Precedence: bulk Message-Id: <20200915233247.3DA3210F29@freefall.freebsd.org> Date: Tue, 15 Sep 2020 23:32:47 +0000 (UTC) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1600212767; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc; bh=/DAJp4uq+7ADOTtZMf7fq/pFydSdSdhP6lk4LRnmjOs=; b=EN9tGq2EQ1pcH7L5pxrC/QM4P6N5FWE37qXPIj4UOLjR6W6FUJy9/czUgcwNHqNSciBmT2 nU9NHSFwcyZBzWVnagZhHdFSqPRa4Y5FktZqZvHMSzXmiM8jv6IIRNW4QOp/EKS3tMUhHH 3cYcpxFHnV44pSzt+Gmj+dXGx2MpaG0Tg9UwvS3N3BoUFmQFW8kW7VhLcyfO0VyNxapi1C aqBOW2xHFJSfdqyicKU3UhxZlQ1JQigwr7h6V8hsKl8AZsinrz6d5cg4fHEJKRUSYJ34Xc R93H8wjXtK5JuKikCCHLw9VmMM3jpOn7WwOloazXhtmk+Fke6KeCBL3SWZtxqg== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1600212767; a=rsa-sha256; cv=none; b=HJKnkL3HZsIZ7FWHaGRSSYRX/6/32k1aMRFK5rTjm+A4Np7BftRldYJUaGMS8VKl4kVT90 cKCLRS+NNLcajbAFJbYfEbgIgQ4BrhwMG1NTkg4DxmBBLe1pXnEJjj4YR3cjOEuOJVzoa5 KatlG4cmLjI/1DEQ2V1iNlc5Tmp0to9sBbd/3iczdwksgEt5JF3m03JRCo5c3tOKiaAlux FbOd+7/DdfnViSg0IY6jMvuwrx3fy9ADUHO7RhFbhJ0mRjW32zD3IJAbBdt9vo3CaAsmLx NMtTgQTl3pBQoniqXFOkrX53oclmQv02oBqaBL28saoeeMecfKZ/TPHZD39BdA== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-BeenThere: freebsd-security-notifications@freebsd.org X-Mailman-Version: 2.1.33 List-Id: "Moderated Security Notifications \[moderated, low volume\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Sep 2020 23:32:47 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-20:29.bhyve_svm Security Advisory The FreeBSD Project Topic: bhyve SVM guest escape Category: core Module: bhyve Announced: 2020-09-15 Credits: Maxime Villard Affects: All supported versions of FreeBSD. Corrected: 2020-09-15 20:25:30 UTC (stable/12, 12.2-STABLE) 2020-09-15 21:46:39 UTC (releng/12.2, 12.2-BETA1-p1) 2020-09-15 21:46:39 UTC (releng/12.1, 12.1-RELEASE-p10) 2020-09-15 20:26:31 UTC (stable/11, 11.4-STABLE) 2020-09-15 21:46:39 UTC (releng/11.4, 11.4-RELEASE-p4) 2020-09-15 21:46:39 UTC (releng/11.3, 11.3-RELEASE-p14) CVE Name: CVE-2020-7467 For general information regarding FreeBSD Security Advisories, including descriptions of the fields above, security branches, and the following sections, please visit . I. Background bhyve(8) is a hypervisor that supports running a variety of guest operating systems in virtual machines on AMD and Intel CPUs. AMD and Intel provide broadly similar virtualization interfaces, but each provides its own specific instructions for manipulating virtual machine state. II. Problem Description A number of AMD virtualization instructions operate on host physical addresses, are not subject to nested page table translation, and guest use of these instructions was not trapped. III. Impact - From kernel mode a malicious guest can write to arbitrary host memory (with some constraints), affording the guest full control of the host. IV. Workaround No workaround is available. Systems not using bhyve, and systems that use bhyve with an Intel CPU, are not vulnerable. V. Solution Upgrade your vulnerable system to a supported FreeBSD stable or release / security branch (releng) dated after the correction date, and reboot. Perform one of the following: 1) To update your vulnerable system via a binary patch: Systems running a RELEASE version of FreeBSD on the i386 or amd64 platforms can be updated via the freebsd-update(8) utility: # freebsd-update fetch # freebsd-update install # shutdown -r +10min "Rebooting for a security update" 2) To update your vulnerable system via a source code patch: The following patches have been verified to apply to the applicable FreeBSD release branches. a) Download the relevant patch from the location below, and verify the detached PGP signature using your PGP utility. # fetch https://security.FreeBSD.org/patches/SA-20:29/bhyve_svm.patch # fetch https://security.FreeBSD.org/patches/SA-20:29/bhyve_svm.patch.asc # gpg --verify bhyve_svm.patch.asc b) Apply the patch. Execute the following commands as root: # cd /usr/src # patch < /path/to/patch c) Recompile your kernel as described in and reboot the system. VI. Correction details The following list contains the correction revision numbers for each affected branch. Branch/path Revision - ------------------------------------------------------------------------- stable/12/ r365767 releng/12.2/ r365780 releng/12.1/ r365780 stable/11/ r365769 releng/11.4/ r365780 releng/11.3/ r365780 - ------------------------------------------------------------------------- To see which files were modified by a particular revision, run the following command, replacing NNNNNN with the revision number, on a machine with Subversion installed: # svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base Or visit the following URL, replacing NNNNNN with the revision number: VII. References The latest revision of this advisory is available at -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEE/A6HiuWv54gCjWNV05eS9J6n5cIFAl9hOJhfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldEZD MEU4NzhBRTVBRkU3ODgwMjhENjM1NUQzOTc5MkY0OUVBN0U1QzIACgkQ05eS9J6n 5cJxjxAAjy783UUnVvhtiJt4p5TGMpaU+ZrLnKaOASiTDdbp6z3IFuLZ1VbkekAM aMGgZNmYkRotcTM0mbhoeRROSrYlmO2ZHNmJyxchbOaIfKXL3iTFYP5gRirN1r+Q i8+Gr5HzTL5SkvTEx0wKUp6uRqD26nf7i4KrdOWmf5ivhB66Z2vk/56aX53eSNJ5 iPZYvlFnVIcy1wKPE1RIP67H+nqqWBApavWUMK6f01cAMr5w0BE+f4RdSvzEFnuG p2Id8A3ptt0VoIdZzbJkLKog4/dlC1C+PVPPLND2gcCY2c/+gG0nNTy9Fjdvsoor AnmRvlarCCcEVOSxGk+WNUwWdQnQPFykpZxGtid53km3Yjw1smPmfOVwvNhTkzoP tPZ568wFyaBGLI+39hC0u0AtLT93MBHpxpCMpQZ9rlFauxn5OuyBFkxgCuEyq728 GcrMVggyrzOetW7GqdlOEzFDj3nxHme+08qmbLXjv5X8N1RK+TGZDAjYFqLU1NXi cyPhbGqV4SuYw3dW7E0C8eOocuVmpXTEW82R9ff1pobUZUNVGKZse1rjT344VTSc DazL/q2TIo5fyDWEaNWsPad8mdyQGWft2cfYHYrO+Y6Smn/oKS3LmX61bGC37FEF b0rqunbDdq4775q6H6KKbRgVTKGiVyC/Nt/2xkg//GymzNnuFvY= =lplz -----END PGP SIGNATURE----- From owner-freebsd-security-notifications@freebsd.org Tue Sep 15 23:32:57 2020 Return-Path: Delivered-To: freebsd-security-notifications@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 5065F3E401F for ; Tue, 15 Sep 2020 23:32:57 +0000 (UTC) (envelope-from security-advisories@freebsd.org) Received: from freefall.freebsd.org (freefall.freebsd.org [96.47.72.132]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "freefall.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Brffd0Wg9z3Zr9; Tue, 15 Sep 2020 23:32:57 +0000 (UTC) (envelope-from security-advisories@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1600212777; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc; bh=khGkkBNb7yjne3qHCVMdixG5zQiaZcvAJX+xLcu4Yvw=; b=yfrayVwaYn3gbcF6VIA6SwB+Maof8n0Dz7wOuRy2BhdUEZbGlr93MAev6Nprr/JWLFJKc/ V1jeF38NkWz+mzLHeHq+BOV4KG1DtAuND75oROe/hhLnH7T5ImbulRH7qiNKsq6kzzor+1 YwUx3bG/4B5H0IfslDKi+Ag/HbEWe7mkWWwRt5L2+omOnfB2IZblPiHRboDF9diNfiah3H qzxY9QsZzYxANKR6prdDnhoH57wKb+kY6Te3W8eT9Ug1FDLFpnM9/Yy/KLttOnEye4QJO1 QGkg6hwlebRKFjDsAr5U/a7rlvoB36UQAS/KPftIAk7znYr4YT2O7dS4/m3kow== Received: by freefall.freebsd.org (Postfix, from userid 945) id E89CC10E59; Tue, 15 Sep 2020 23:32:56 +0000 (UTC) From: FreeBSD Security Advisories To: FreeBSD Security Advisories Subject: FreeBSD Security Advisory FreeBSD-SA-20:30.ftpd Reply-To: freebsd-security@freebsd.org Precedence: bulk Message-Id: <20200915233256.E89CC10E59@freefall.freebsd.org> Date: Tue, 15 Sep 2020 23:32:56 +0000 (UTC) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1600212777; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc; bh=khGkkBNb7yjne3qHCVMdixG5zQiaZcvAJX+xLcu4Yvw=; b=x9oySDeG5IxB7x4u+yy8zVtF1CNGOs0a2gsmLN3FuIMkV1qYhDxi1zdxVHl8pWPwYiz2mO NHjabqeQ+rU9BLAn6PIj8ddBujJ1I5ObDurwY2WGw08LYTZBsO8djuPpC+Uz88r0vJ9OfZ 2wrS+93EXu6fN+sC9gcZJ7BEm/uzYByf6Mk8c+OJ/J/+TS2iP7A30dTpVn/xmJX0dTpcl3 RmyT3/O88HMuFVO1j/qgkZSVazE8evmxLQXe52hY0axTdXmA3V6URyJCNCX6fWQA7mei1Z xUvfw3IJDQKLdP9pYelBsUXVnRHpFVnS5usvBCqOlR3DYGsV6tvAKOrqzsJ6bg== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1600212777; a=rsa-sha256; cv=none; b=kn9B3lkAPKAci8O6LNNvicFhubX0fnupi047TsU8UrzhkvutZwlj948MuhuE+CZbTNtm/R o1tum9gWsA/XG/eHnZg0cCqPMyB81q2FWrxIZx3Jva+2RGx168MVe3Br9Zeo5t60QCNOoL HeFDOgoOeHCNLgLHnQLFtI/C1YuytQajjV0ncWlRJ0TV8eUGvgVMQkcQwAESid5GVYt1T7 8riY235OFDvgR1ghOZ+038wpf7B6ZDZ7xDKJTKkrZSsMlMy+CvjWEB0pNNtWHymLCAlXXi yVAxDr2hfIHVaehDMkjvx1NhRjILIxXIMN0YItCI3C+jTwCRReaXlZXof6kHKQ== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-BeenThere: freebsd-security-notifications@freebsd.org X-Mailman-Version: 2.1.33 List-Id: "Moderated Security Notifications \[moderated, low volume\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Sep 2020 23:32:57 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-20:30.ftpd Security Advisory The FreeBSD Project Topic: ftpd privilege escalation via ftpchroot feature Category: core Module: ftpd Announced: 2020-09-15 Credits: Anonymous working with Trend Micro Zero Day Initiative Affects: All supported versions of FreeBSD. Corrected: 2020-09-15 20:55:13 UTC (stable/12, 12.2-STABLE) 2020-09-15 21:47:44 UTC (releng/12.2, 12.2-BETA1-p1) 2020-09-15 21:47:44 UTC (releng/12.1, 12.1-RELEASE-p10) 2020-09-15 20:56:14 UTC (stable/11, 11.4-STABLE) 2020-09-15 21:47:44 UTC (releng/11.4, 11.4-RELEASE-p4) 2020-09-15 21:47:44 UTC (releng/11.3, 11.3-RELEASE-p14) CVE Name: CVE-2020-7468 For general information regarding FreeBSD Security Advisories, including descriptions of the fields above, security branches, and the following sections, please visit . I. Background ftpd(8) is a daemon that implements an FTP server. To restrict filesystem access of authenticated clients, ftpd(8) supports the ftpchroot(5) feature, which allows the system administrator to designate a root directory for each FTP user. This is implemented using the chroot(2) system call. II. Problem Description A ftpd(8) bug in the implementation of the file system sandbox, combined with capabilities available to an authenticated FTP user, can be used to escape the file system restriction configured in ftpchroot(5). Moreover, the bug allows a malicious client to gain root privileges. III. Impact A malicious FTP user can gain privileged access to an affected system. IV. Workaround No workaround is available. Systems not running ftpd(8) or not making use of ftpchroot(5) are not affected. Exploitation of the bug requires that a malicious FTP client have login access to the server. Anonymous access is not sufficient. V. Solution Upgrade your vulnerable system to a supported FreeBSD stable or release / security branch (releng) dated after the correction date. Perform one of the following: 1) To update your vulnerable system via a binary patch: Systems running a RELEASE version of FreeBSD on the i386 or amd64 platforms can be updated via the freebsd-update(8) utility: # freebsd-update fetch # freebsd-update install Restart the applicable daemons, or reboot the system. 2) To update your vulnerable system via a source code patch: The following patches have been verified to apply to the applicable FreeBSD release branches. a) Download the relevant patch from the location below, and verify the detached PGP signature using your PGP utility. # fetch https://security.FreeBSD.org/patches/SA-20:30/ftpd.patch # fetch https://security.FreeBSD.org/patches/SA-20:30/ftpd.patch.asc # gpg --verify ftpd.patch.asc b) Apply the patch. Execute the following commands as root: # cd /usr/src # patch < /path/to/patch c) Recompile the operating system using buildworld and installworld as described in . Restart the applicable daemons, or reboot the system. VI. Correction details The following list contains the correction revision numbers for each affected branch. Branch/path Revision - ------------------------------------------------------------------------- stable/12/ r365772 releng/12.2/ r365781 releng/12.1/ r365781 stable/11/ r365773 releng/11.4/ r365781 releng/11.3/ r365781 - ------------------------------------------------------------------------- To see which files were modified by a particular revision, run the following command, replacing NNNNNN with the revision number, on a machine with Subversion installed: # svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base Or visit the following URL, replacing NNNNNN with the revision number: VII. References The latest revision of this advisory is available at -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEE/A6HiuWv54gCjWNV05eS9J6n5cIFAl9hOJhfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldEZD MEU4NzhBRTVBRkU3ODgwMjhENjM1NUQzOTc5MkY0OUVBN0U1QzIACgkQ05eS9J6n 5cJCRA//Zuuqyaim3BnR0Qs9mSI3fm37AQN9NyV0GzaP6ayAeCu7xuyzMzFD58jU SZAkrH16buh34dfelwofPSO8ZIAHZ0X6PpVWHwrTkrT8ADHCuJwEe0imG5MDDJn4 mMJSA9OVyQXgHXApnOhJ4hHMUfGF0QJvsOvPQ4f8J3J9K9pTa78HgekaNWkgpTzo eAGV+lug/UwsK//FrcyYaifZF1xl0ZKSAl6RVFVaqxxVXZGZ2txlew4I03NEfqjJ PAmviQ1p0BO5tMqVSG+/VkuYFJNyUGvuSrvUeIoQnoWljvKx5VnAq5KVCD6La1nn o5JzNEvlqzOC1ClribxALyv/VJHJt6PDBF4S26ATwIdr8TCzSpe2Byjj9KN/qC94 JuT6hScERpT4ARIsJiDIDe0+9zBeglJuS/3sJozI+ani+VL/7uBL6MB50twgioFG 4+5MNgc4VYgX35U0z+fStncZAScByXWdxaMDYx9brfZeaeEhiZA6wXYCf8kpaW94 zDOvBCH+GR1O2nALdlMVFrThQdTkq1AtMQ58Uuaxpu1LBGrMVfz/VCDEurWog+U1 7uxRwx9o6lJvno3oPQTfHkcuHZosOE0KdfdJ1Tcmj1pVZVjeaxu7HEW2H73YRhBN Fc4XIxaO7URyYwtzxzH9yU18wKCp+g/mm5apgbbcz1kBS+fR3Go= =zvW4 -----END PGP SIGNATURE-----