Date: Thu, 05 Jun 2014 17:22:40 +0200 From: Jappe Reuling <jappe@lowlife.org> To: freebsd-security@freebsd.org Subject: Re: FreeBSD Security Advisory FreeBSD-SA-14:14.openssl Message-ID: <53908B40.1040804@lowlife.org> In-Reply-To: <53908845.20900@lowlife.org> References: <201406051316.s55DGtGw041955@freefall.freebsd.org> <53908845.20900@lowlife.org>
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Small addition: CVE-2014-0195 and CVE-2014-0221 refer to DTLS , the other two don't off course. regards jappe On 05/06/14 17:09, Jappe Reuling wrote: > Hi, > > One, my appologies if it's a stupid one, question: the advisory is > for DTLS, hence UDP TLS, right? Normally you would run SSL (TLS a.o.) > via TCP. So what would use DTLS (in the base system) and could be > vulnerable? A mailserver using TLS and linked to the base system's > openssl would be using TCP...? > > Thanks in advance. > > Jappe > > On 05/06/14 15:16, FreeBSD Security Advisories wrote: >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA512 >> >> ============================================================================= >> >> FreeBSD-SA-14:14.openssl Security Advisory >> The >> FreeBSD Project >> >> Topic: OpenSSL multiple vulnerabilities >> >> Category: contrib >> Module: openssl >> Announced: 2014-06-05 >> Affects: All supported versions of FreeBSD. >> Corrected: 2014-06-05 12:32:38 UTC (stable/10, 10.0-STABLE) >> 2014-06-05 12:33:23 UTC (releng/10.0, 10.0-RELEASE-p5) >> 2014-06-05 12:53:06 UTC (stable/9, 9.3-BETA1) >> 2014-06-05 12:53:06 UTC (stable/9, 9.3-BETA1-p2) >> 2014-06-05 12:33:23 UTC (releng/9.2, 9.2-RELEASE-p8) >> 2014-06-05 12:33:23 UTC (releng/9.1, 9.1-RELEASE-p15) >> 2014-06-05 12:32:38 UTC (stable/8, 8.4-STABLE) >> 2014-06-05 12:33:23 UTC (releng/8.4, 8.4-RELEASE-p12) >> CVE Name: CVE-2014-0195, CVE-2014-0221, CVE-2014-0224, >> CVE-2014-3470 >> >> For general information regarding FreeBSD Security Advisories, >> including descriptions of the fields above, security branches, and the >> following sections, please visit <URL:http://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. >> >> II. Problem Description >> >> Receipt of an invalid DTLS fragment on an OpenSSL DTLS client or >> server can >> lead to a buffer overrun. [CVE-2014-0195] >> >> Receipt of an invalid DTLS handshake on an OpenSSL DTLS client can >> lead the >> code to unnecessary recurse. [CVE-2014-0221] >> >> Carefully crafted handshake can force the use of weak keying material in >> OpenSSL SSL/TLS clients and servers. [CVE-2014-0224] >> >> Carefully crafted packets can lead to a NULL pointer deference in >> OpenSSL >> TLS client code if anonymous ECDH ciphersuites are enabled. >> [CVE-2014-3470] >> >> III. Impact >> >> A remote attacker may be able to run arbitrary code on a vulnerable >> client >> or server by sending invalid DTLS fragments to an OpenSSL DTLS client or >> server. [CVE-2014-0195] >> >> A remote attacker who can send an invalid DTLS handshake to an >> OpenSSL DTLS >> client can crash the remote OpenSSL DTLS client. [CVE-2014-0221] >> >> A remote attacker who can send a carefully crafted handshake can >> force the >> use of weak keying material between a vulnerable client and a vulnerable >> server and decrypt and/or modify traffic from the attacked client and >> server in a man-in-the-middle (MITM) attack. [CVE-2014-0224] >> >> A remote attacker who can send carefully crafted packets can cause >> OpenSSL >> TLS client to crash. [CVE-2014-3470] >> >> 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 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 10.0] >> # fetch http://security.FreeBSD.org/patches/SA-14:14/openssl-10.patch >> # fetch >> http://security.FreeBSD.org/patches/SA-14:14/openssl-10.patch.asc >> # gpg --verify openssl-10.patch.asc >> >> [FreeBSD 9.x and 8.x] >> # fetch http://security.FreeBSD.org/patches/SA-14:14/openssl-9.patch >> # fetch http://security.FreeBSD.org/patches/SA-14:14/openssl-9.patch.asc >> # gpg --verify openssl-9.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:http://www.FreeBSD.org/handbook/makeworld.html>. >> >> Restart all deamons using the library, or reboot the system. >> >> 3) 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 >> >> VI. Correction details >> >> The following list contains the correction revision numbers for each >> affected branch. >> >> Branch/path Revision >> - >> ------------------------------------------------------------------------- >> stable/8/ r267103 >> releng/8.4/ r267104 >> stable/9/ r267106 >> releng/9.1/ r267104 >> releng/9.2/ r267104 >> stable/10/ r267103 >> releng/10.0/ r267104 >> - >> ------------------------------------------------------------------------- >> >> 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:http://svnweb.freebsd.org/base?view=revision&revision=NNNNNN>; >> >> VII. References >> >> <URL:http://www.openssl.org/news/secadv_20140605.txt>; >> >> <URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0195>; >> >> <URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0221>; >> >> <URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0224>; >> >> <URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3470>; >> >> The latest revision of this advisory is available at >> <URL:http://security.FreeBSD.org/advisories/FreeBSD-SA-14:14.openssl.asc>; >> >> -----BEGIN PGP SIGNATURE----- >> Version: GnuPG v2.0.22 (FreeBSD) >> >> iQIcBAEBCgAGBQJTkGuTAAoJEO1n7NZdz2rnomEP/AzIur2b4KXcOJnPSq+Fgz2E >> ThZnGpYaWGQXkBnPcARtLUN+98UQkdcVOpDXExdTP/mz+fRH5P14qBCwgFXfMX1a >> Ins6M696pAyBE+SHjFMwX/pSA402Y2LFcfUgq1f9oBKPM77+X/9J4z4NPXB72qTp >> ULLTBVtHiqwlcO6bD+YlpE5AfvoKoUI0MmmkuA4R1zmY/JBgDqN68oiTn7KwRp5m >> v44uVuGF+gGMMkN5oZmXqn89+CbRjDkyk9gvHhe1VXZLfZi6GDlayNMpuBdj9laU >> 3jpMMqwXGF45j524Ai03U/lAzO7Fn1Zl87dlElPk1BMaVmG8uGFipiULPQqsyUC9 >> rchzXxtDM7VVA/p7G3Vn6RHbOPeNCxhuFonq1WxVBrXImIw23PRWDlYx+Kve5trH >> gJvztI6CkD0f6NOf7HM7LYU1slvGFykFhoGeurxFVfKT2YlulL6HcRx4QPFE33c1 >> W57wPHUvZ2w8hO0OU1zX1pz1qE6je+DoSTq7bob5ExXmDWCu2LElmKXW67N2tGYq >> kNetRkTR9qwDlmexrcyAVgR45a/9oe/p9taTgm2/8ITzaHjexYcGn/tL7Mc9pYCa >> Dj9FP0D52foKj3PjVfSZc/8kgJklKhtugDvbK74MmruA6vUELRrY84O2kfpgAzLj >> KfE2eBuieG9+Pdpk011t >> =/CUF >> -----END PGP SIGNATURE----- >> _______________________________________________ >> freebsd-security-notifications@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-security-notifications >> To unsubscribe, send any mail to >> "freebsd-security-notifications-unsubscribe@freebsd.org" >> > > _______________________________________________ > 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" >
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