From nobody Wed Nov 30 00:46:58 2022 X-Original-To: freebsd-security@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4NMLBV4Yxgz4j2tS for ; Wed, 30 Nov 2022 00:46:58 +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 "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4NMLBV3Lwcz4DVk; Wed, 30 Nov 2022 00:46:58 +0000 (UTC) (envelope-from security-advisories@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1669769218; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc; bh=PE8+p24Wl+W9Dx5WmU6DGNoC2h5QED7uRNVEV01acIE=; b=B7l4aP0FkSJrg9mGmTHQaiB5DiY/ieA/JFDh0zeuqD6WmzzmbDZKVtHMFwyxVPbGoEPgnj 0j5YxhDFTviUw+aglEa0gIm+Zui930oWVHjUdSaBLwvVg/A5rVVaWL0TzLQeQs2E4m5fOx N5b2tLIIhAtK7MyDY/hQVV3LFOK4b3ruj3Cz02/FBqNaVekf0qHj7+7/w1XQMWifv8qJs1 JsxSBpY19tM3IIfb7Fjl/nmQOURnoOQQuF1SlgUiIL55tWwUUVl2WuDkLvUfW7fgB1r463 3B4Ex0XE3KWU1jC0YfMKflKGU0jRpYFKexHW8N6DTT4ibybIueUmGo2N2ruykQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1669769218; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc; bh=PE8+p24Wl+W9Dx5WmU6DGNoC2h5QED7uRNVEV01acIE=; b=k1ncP0y0XBv0ROM3X18Sc2CqBsBYnGdDhekvNWrqEcG2p+367xg2cE4+E0EWLTDJ77E8HX amVVHPQ+676TN4qrARN2E489QB68fnY4zaoxQDqeRTVUVHbNR1n3TjgD3s8wd3Te2ibbt2 fjl6lG2WqrOH7hC+PiuDeyNHLJ6Je+naSWxKJGB4Zgf6EEd5MrI23uihbX6/wZj0bcpUju 2kESuWGFxdRGpKxU85GrWRCUhQRaE0VtH7lxxHYkgdJ9H4+wX8vKFkbSayfLTgLBilaStK Pf2a8W6xU4wScqDzbV8xsRC35evGcVEfAehzvLbvb+0F06fFPg1qexAX4ksEoQ== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1669769218; a=rsa-sha256; cv=none; b=YYrV0CxAc3OeFIutebDSI9eR32DutqWTOEoPAZyj9mBLIyaortwSgTDLORXgN0ZRdwaT5K p35o+BZhG3/C4XJklspGyNugpvMaH40GsMNDoZj3T5wG5Y/FxznskzMwaUAlfs5W3k5WCT Ny0hYkKUnu/i2+tHf8alBFaG9Rh0XH/akC7ZmOPwjMKDpA1eASUWUqELt0MIP8dCAgvirN +1AZXefZjdGekur1CgqGe5kLuxUVSsxIZgRip7kizRTgzWQN5RfJaZkBrQhmi2k6lsmHD8 2sBekw5CNEmm86DWM9KgLUQfO0ajNQvHnsPa+cmC/AxW83oQ9eETxxfDJPA6ag== Received: by freefall.freebsd.org (Postfix, from userid 945) id 454791C472; Wed, 30 Nov 2022 00:46:58 +0000 (UTC) From: FreeBSD Security Advisories To: FreeBSD Security Advisories Subject: FreeBSD Security Advisory FreeBSD-SA-22:14.heimdal [REVISED] Reply-To: freebsd-security@freebsd.org Precedence: bulk Message-Id: <20221130004658.454791C472@freefall.freebsd.org> Date: Wed, 30 Nov 2022 00:46:58 +0000 (UTC) X-ThisMailContainsUnwantedMimeParts: N List-Id: Security issues List-Archive: https://lists.freebsd.org/archives/freebsd-security List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-security@freebsd.org X-BeenThere: freebsd-security@freebsd.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-22:14.heimdal Security Advisory The FreeBSD Project Topic: Multiple vulnerabilities in Heimdal [REVISED] Category: contrib Module: heimdal Announced: 2022-11-15 Revised: 2022-11-29 Affects: All supported versions of FreeBSD. Corrected: 2022-11-15 21:15:35 UTC (stable/13, 13.1-STABLE) 2022-11-16 01:50:27 UTC (releng/13.1, 13.1-RELEASE-p4) 2022-11-15 21:16:56 UTC (stable/12, 12.4-STABLE) 2022-11-16 01:47:57 UTC (releng/12.4, 12.4-RC2-p1) 2022-11-16 01:40:21 UTC (releng/12.3, 12.3-RELEASE-p9) CVE Name: CVE-2019-14870, CVE-2022-3437, CVE-2022-42898, CVE-2022-44640, CVE-2021-44758 0. Revision history v1.0 2022-11-15 Initial release. v1.1 2022-11-29 Updated with reference to FreeBSD-EN-22:28.heimdal. For general information regarding FreeBSD Security Advisories, including descriptions of the fields above, security branches, and the following sections, please visit . I. Background Heimdal implements the Kerberos 5 network authentication protocols. A Key Distribution Center (KDC) is trusted by all principals registered in that administrative "realm" to store a secret key in confidence, of which, the proof of knowledge is used to verify the authenticity of a principal. II. Problem Description Multiple security vulnerabilities have been discovered in the Heimdal implementation of the Kerberos 5 network authentication protocols and KDC. - - CVE-2022-42898 PAC parse integer overflows - - CVE-2022-3437 Overflows and non-constant time leaks in DES{,3} and arcfour - - CVE-2021-44758 NULL dereference DoS in SPNEGO acceptors - - CVE-2022-44640 Heimdal KDC: invalid free in ASN.1 codec - - CVE-2019-14870 Validate client attributes in protocol-transition - - CVE-2019-14870 Apply forwardable policy in protocol-transition - - CVE-2019-14870 Always lookup impersonate client in DB III. Impact A malicious actor with control of the network between a client and a service using Kerberos for authentication can impersonate either the client or the service, enabling a man-in-the-middle (MITM) attack circumventing mutual authentication. Note that, while CVE-2022-44640 is a severe vulnerability, possibly enabling remote code execution on other platforms, the version of Heimdal included with the FreeBSD base system cannot be exploited in this way on FreeBSD. IV. Workaround No workaround is available, but only systems using Kerberos are affected. V. Solution Upgrade your vulnerable system to a supported FreeBSD stable or release / security branch (releng) dated after the correction date. A reboot is recommended. Perform one of the following: 1) To update your vulnerable system via a binary patch: Systems running a RELEASE version of FreeBSD on the amd64, i386, or (on FreeBSD 13 and later) arm64 platforms can be updated via the freebsd-update(8) utility: # freebsd-update fetch # freebsd-update install A reboot is recommended. 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-22:14/heimdal.patch # fetch https://security.FreeBSD.org/patches/SA-22:14/heimdal.patch.asc # gpg --verify heimdal.patch.asc b) Apply the patch. Execute the following commands as root: # cd /usr/src # patch < /path/to/patch c) The original revision of this advisory included a patch which renders the KDC inoperative. This was corrected in FreeBSD-EN-22:28.heimdal. Systems using the KDC must download and verify an additional patch: # fetch https://security.FreeBSD.org/patches/EN-22:28/heimdal.patch # fetch https://security.FreeBSD.org/patches/EN-22:28/heimdal.patch.asc # gpg --verify heimdal.patch.asc d) Apply the additional patch. Execute the following commands as root: # cd /usr/src # patch < /path/to/patch e) Recompile the operating system using buildworld and installworld as described in . Restart all daemons that use the Kerberos, or reboot the system. VI. Correction details This issue is corrected by the corresponding Git commit hash or Subversion revision number in the following stable and release branches: Branch/path Hash Revision - ------------------------------------------------------------------------- stable/13/ d0b6550173d2 stable/13-n253097 releng/13.1/ a1e014e89282 releng/13.1-n250170 stable/12/ r372752 releng/12.4/ r372755 releng/12.3/ r372753 - ------------------------------------------------------------------------- For FreeBSD 13 and later: Run the following command to see which files were modified by a particular commit: # git show --stat Or visit the following URL, replacing NNNNNN with the hash: To determine the commit count in a working tree (for comparison against nNNNNNN in the table above), run: # git rev-list --count --first-parent HEAD For FreeBSD 12 and earlier: Run the following command to see which files were modified by a particular revision, replacing NNNNNN with the revision number: # 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----- iQIzBAEBCgAdFiEE/A6HiuWv54gCjWNV05eS9J6n5cIFAmOGlpAACgkQ05eS9J6n 5cJFGQ//TbsJox2faNwQaBoQy/gFSP6TgauZTZJR5A5Y6bRMcvkNJyl3KIM2XlWD W+lJlxL7kERjv9zD6iI8rns4+FOO2p9f4ICZsWy88ABQrmpuz2N22MSd8NyXeRv0 30HyftaUMZdAPHVk5Piu7l3U6S4tPiO1BZEoMucG8cby1eWlPMtuH3K/0/CLZmPc F8U+oRDwB5KnZgP39JmvejvGoXik1lhCrvaLZ5fG1QEmyb1xtjHfT+QSkh9FWLxz jrHfwgpZFERprpMzqZAicbinV/LjZMfEbckJygzGNzSTTPD+uqT/jDmY+iHnkdF1 Lw9R8pJoJIpvckRrPLQIOZZuz/Xd4FRB7Gc/q4/x4HTP/8y/x1uKZmcbrh86W9xu 9jCLMgpqETEjHhqADX7Z4+7oxhCPmgSJP8dX5o0HvORs4bqqxbkLqkCsp8QXdcES vftJGgpt1IPO8MBcr4pG6+cEcZQuk7qX0/D3PArxLkwU2coimP2MmjxyeWBX5GrI zgdF2HiUYvuZXyt1FMgve+8JkS1RYEE+yPWeOJ5RnIuHnIaNTD81o1gIYuFL3ECb UAREi6FYskzeJQ/W2ZRMwQPGMPDQI901+msfStjxgx92rKhxLW+rDsg0EUsApoOv DzIaeCtOGCZMG/mLvVhOLYbqmFrHDbWy8cMoSti/lnx7OdLpnn4= =L299 -----END PGP SIGNATURE-----