Date: Thu, 19 Mar 2015 14:08:28 -0400 From: Mike Tancsa <mike@sentex.net> To: freebsd-security@freebsd.org Subject: Re: FreeBSD Security Advisory FreeBSD-SA-15:06.openssl Message-ID: <550B109C.4050704@sentex.net> In-Reply-To: <201503191755.t2JHtdaU042600@freefall.freebsd.org> References: <201503191755.t2JHtdaU042600@freefall.freebsd.org>
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Wow, thanks for the quick fix/commit Xin!! ---Mike On 3/19/2015 1:55 PM, FreeBSD Security Advisories wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA512 > > ============================================================================= > FreeBSD-SA-15:06.openssl Security Advisory > The FreeBSD Project > > Topic: Multiple OpenSSL vulnerabilities > > Category: contrib > Module: openssl > Announced: 2015-03-19 > Affects: All supported versions of FreeBSD. > Corrected: 2015-03-19 17:40:43 UTC (stable/10, 10.1-STABLE) > 2015-03-19 17:42:38 UTC (releng/10.1, 10.1-RELEASE-p7) > 2015-03-19 17:40:43 UTC (stable/9, 9.3-STABLE) > 2015-03-19 17:42:38 UTC (releng/9.3, 9.3-RELEASE-p11) > 2015-03-19 17:40:43 UTC (stable/8, 8.4-STABLE) > 2015-03-19 17:42:38 UTC (releng/8.4, 8.4-RELEASE-p25) > CVE Name: CVE-2015-0209, CVE-2015-0286, CVE-2015-0287, CVE-2015-0288, > CVE-2015-0289, CVE-2015-0293 > > For general information regarding FreeBSD Security Advisories, > including descriptions of the fields above, security branches, and the > following sections, please visit <URL:https://security.FreeBSD.org/>. > > I. Background > > FreeBSD includes software from the OpenSSL Project. The OpenSSL Project is > a collaborative effort to develop a robust, commercial-grade, full-featured > Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) > and Transport Layer Security (TLS v1) protocols as well as a full-strength > general purpose cryptography library. > > Abstract Syntax Notation One (ASN.1) is a standard and notation that > describes rules and structures for representing, encoding, transmitting, > and decoding data in telecommunications and computer networking, which > enables representation of objects that are independent of machine-specific > encoding technique. > > II. Problem Description > > A malformed elliptic curve private key file could cause a use-after-free > condition in the d2i_ECPrivateKey function. [CVE-2015-0209] > > An attempt to compare ASN.1 boolean types will cause the ASN1_TYPE_cmp > function to crash with an invalid read. [CVE-2015-0286] > > Reusing a structure in ASN.1 parsing may allow an attacker to cause memory > corruption via an invalid write. [CVE-2015-0287] > > The function X509_to_X509_REQ will crash with a NULL pointer dereference if > the certificate key is invalid. [CVE-2015-0288] > > The PKCS#7 parsing code does not handle missing outer ContentInfo correctly. > [CVE-2015-0289] > > A malicious client can trigger an OPENSSL_assert in servers that both support > SSLv2 and enable export cipher suites by sending a specially crafted SSLv2 > CLIENT-MASTER-KEY message. [CVE-2015-0293] > > III. Impact > > A malformed elliptic curve private key file can cause server daemons using > OpenSSL to crash, resulting in a Denial of Service. [CVE-2015-0209] > > A remote attacker who is able to send specifically crafted certificates > may be able to crash an OpenSSL client or server. [CVE-2015-0286] > > An attacker who can cause invalid writes with applications that parse > structures containing CHOICE or ANY DEFINED BY components and reusing > the structures may be able to cause them to crash. Such reuse is believed > to be rare. OpenSSL clients and servers are not affected. [CVE-2015-0287] > > An attacker may be able to crash applications that create a new certificate > request with subject name the same as in an existing, specifically crafted > certificate. This usage is rare in practice. [CVE-2015-0288] > > An attacker may be able to crash applications that verify PKCS#7 signatures, > decrypt PKCS#7 data or otherwise parse PKCS#7 structures with specifically > crafted certificates. [CVE-2015-0289] > > A malicious client can trigger an OPENSSL_assert in servers that both support > SSLv2 and enable export cipher suites by sending a carefully crafted SSLv2 > CLIENT-MASTER-KEY message, resulting in a Denial of Service. [CVE-2015-0293] > > Note that two issues in the original OpenSSL advisory, CVE-2015-0204 and > CVE-2015-0292, were already addressed by FreeBSD-SA-15:01.openssl and > FreeBSD-EN-15:02.openssl. > > IV. Workaround > > No workaround is available. > > V. Solution > > Perform one of the following: > > 1) Upgrade your vulnerable system to a supported FreeBSD stable or > release / security branch (releng) dated after the correction date. > > 2) 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 > > 3) 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 8.4 and FreeBSD 9.3] > # fetch https://security.FreeBSD.org/patches/SA-15:06/openssl-0.9.8.patch > # fetch https://security.FreeBSD.org/patches/SA-15:06/openssl-0.9.8.patch.asc > # gpg --verify openssl-0.9.8.patch.asc > > [FreeBSD 10.1] > # fetch https://security.FreeBSD.org/patches/SA-15:06/openssl-1.0.1.patch > # fetch https://security.FreeBSD.org/patches/SA-15:06/openssl-1.0.1.patch.asc > # gpg --verify openssl-1.0.1.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 <URL:https://www.FreeBSD.org/handbook/makeworld.html>. > > Restart all deamons using the library, or reboot the system. > > VI. Correction details > > The following list contains the correction revision numbers for each > affected branch. > > Branch/path Revision > - ------------------------------------------------------------------------- > stable/8/ r280266 > releng/8.4/ r280268 > stable/9/ r280266 > releng/9.3/ r280268 > stable/10/ r280266 > releng/10.1/ r280268 > - ------------------------------------------------------------------------- > > 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: > > <URL:https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN>; > > VII. References > > <URL:https://www.openssl.org/news/secadv_20150319.txt>; > > <URL:https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0209>; > > <URL:https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0286>; > > <URL:https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0287>; > > <URL:https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0288>; > > <URL:https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0289>; > > <URL:https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0293>; > > The latest revision of this advisory is available at > <URL:https://security.FreeBSD.org/advisories/FreeBSD-SA-15:06.openssl.asc>; > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v2.1.2 (FreeBSD) > > iQIcBAEBCgAGBQJVCwr1AAoJEO1n7NZdz2rnayEP/0w3Pba5k/1G0mJ1T9APNAns > hhXm0YuR/rNJ1XBooWEOctrijlsVChcIt8KvJCU9apOZWjDvm/nvaQ077GCi5RSp > jhQBs8MLVfXzwMbJ0/uBpp6ChF8uafk5O+gr8ulb2jG6VIaLkGOWPYv61aRYSGxy > R7+6FxD8M0lLbGOQGETy1HxKzeWztA2p0ILORNAsi+bF8GSJpxGhSxqDDi4+ic/C > 3oEw0zT/E6DhxJovOPebKq0eGcRbv7ETqDmtNQdqbOddV+0FY1E+nHtrAo6B/Kln > rL+meBJHmLeEREROFk4OvCynuROUJGmXJGKwjN3uOVM05qcEZS4NkVhFNrxt6S5H > t3wQ02SesbA3pbmce5OuXmlJgdL57DVlMb5sQjkqPeoJ6pn6Rz7VLSgLNfXDUSxs > x/Lgx0+qLQUubMud7zT97UIvZmDqFTWXfJu5S/0Qt8BPFunmoNJttJ5Cr+brzEtu > 5RLjcvkC1giVCpSXS96QbeT67uqSkMZa8gtII8bA77HBGA0Ky8AOwTAXbCiUovuH > sLwsI8KUC3lsKUh7eyLsSm2+wRHn0e6dZ1PE0JRazCnCRboTvMWK2d4R7ANdrwsq > CgtCWLRz6vbB9J4XTNupcEoZGhIA4RuOBqx43eQmaRw1HoV3vn85QP94oL5jzXBd > UQg3YfrXHDlxCsqEzN7o > =wi0T > -----END PGP SIGNATURE----- > _______________________________________________ > freebsd-security@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-security > To unsubscribe, send any mail to "freebsd-security-unsubscribe@freebsd.org" > > -- ------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, mike@sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada http://www.tancsa.com/
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