Security update for openssl SUSE Patch security@suse.de SUSE Security Team openSUSE-SU-2017:3345-1 Final 1 1 2017-12-16T08:47:02Z current 2017-12-16T08:47:02Z 2017-12-16T08:47:02Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for openssl This update for openssl fixes the following issues: - OpenSSL Security Advisory [07 Dec 2017] * CVE-2017-3737: OpenSSL 1.0.2 (starting from version 1.0.2b) introduced an \'error state\' mechanism. The intent was that if a fatal error occurred during a handshake then OpenSSL would move into the error state and would immediately fail if you attempted to continue the handshake. This works as designed for the explicit handshake functions (SSL_do_handshake(), SSL_accept() and SSL_connect()), however due to a bug it does not work correctly if SSL_read() or SSL_write() is called directly. In that scenario, if the handshake fails then a fatal error will be returned in the initial function call. If SSL_read()/SSL_write() is subsequently called by the application for the same SSL object then it will succeed and the data is passed without being decrypted/encrypted directly from the SSL/TLS record layer. In order to exploit this issue an application bug would have to be present that resulted in a call to SSL_read()/SSL_write() being issued after having already received a fatal error. OpenSSL version 1.0.2b-1.0.2m are affected. Fixed in OpenSSL 1.0.2n. OpenSSL 1.1.0 is not affected. (bsc#1071905) * CVE-2017-3738: There is an overflow bug in the AVX2 Montgomery multiplication procedure used in exponentiation with 1024-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH1024 are considered just feasible, because most of the work necessary to deduce information about a private key may be performed offline. The amount of resources required for such an attack would be significant. However, for an attack on TLS to be meaningful, the server would have to share the DH1024 private key among multiple clients, which is no longer an option since CVE-2016-0701. This only affects processors that support the AVX2 but not ADX extensions like Intel Haswell (4th generation). Note: The impact from this issue is similar to CVE-2017-3736, CVE-2017-3732 and CVE-2015-3193. (bsc#1071906) This update was imported from the SUSE:SLE-12-SP2:Update update project. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://lists.opensuse.org/opensuse-security-announce/2017-12/msg00076.html E-Mail link for openSUSE-SU-2017:3345-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings openSUSE Leap 42.2 openSUSE Leap 42.3 libopenssl-devel-1.0.2j-16.1 libopenssl-devel-32bit-1.0.2j-16.1 libopenssl1_0_0-1.0.2j-16.1 libopenssl1_0_0-32bit-1.0.2j-16.1 libopenssl1_0_0-hmac-1.0.2j-16.1 libopenssl1_0_0-hmac-32bit-1.0.2j-16.1 openssl-1.0.2j-16.1 openssl-cavs-1.0.2j-16.1 openssl-doc-1.0.2j-16.1 libopenssl-devel-1.0.2j-16.1 as a component of openSUSE Leap 42.2 libopenssl-devel-32bit-1.0.2j-16.1 as a component of openSUSE Leap 42.2 libopenssl1_0_0-1.0.2j-16.1 as a component of openSUSE Leap 42.2 libopenssl1_0_0-32bit-1.0.2j-16.1 as a component of openSUSE Leap 42.2 libopenssl1_0_0-hmac-1.0.2j-16.1 as a component of openSUSE Leap 42.2 libopenssl1_0_0-hmac-32bit-1.0.2j-16.1 as a component of openSUSE Leap 42.2 openssl-1.0.2j-16.1 as a component of openSUSE Leap 42.2 openssl-cavs-1.0.2j-16.1 as a component of openSUSE Leap 42.2 openssl-doc-1.0.2j-16.1 as a component of openSUSE Leap 42.2 libopenssl-devel-1.0.2j-16.1 as a component of openSUSE Leap 42.3 libopenssl-devel-32bit-1.0.2j-16.1 as a component of openSUSE Leap 42.3 libopenssl1_0_0-1.0.2j-16.1 as a component of openSUSE Leap 42.3 libopenssl1_0_0-32bit-1.0.2j-16.1 as a component of openSUSE Leap 42.3 libopenssl1_0_0-hmac-1.0.2j-16.1 as a component of openSUSE Leap 42.3 libopenssl1_0_0-hmac-32bit-1.0.2j-16.1 as a component of openSUSE Leap 42.3 openssl-1.0.2j-16.1 as a component of openSUSE Leap 42.3 openssl-cavs-1.0.2j-16.1 as a component of openSUSE Leap 42.3 openssl-doc-1.0.2j-16.1 as a component of openSUSE Leap 42.3 OpenSSL 1.0.2 (starting from version 1.0.2b) introduced an "error state" mechanism. The intent was that if a fatal error occurred during a handshake then OpenSSL would move into the error state and would immediately fail if you attempted to continue the handshake. This works as designed for the explicit handshake functions (SSL_do_handshake(), SSL_accept() and SSL_connect()), however due to a bug it does not work correctly if SSL_read() or SSL_write() is called directly. In that scenario, if the handshake fails then a fatal error will be returned in the initial function call. If SSL_read()/SSL_write() is subsequently called by the application for the same SSL object then it will succeed and the data is passed without being decrypted/encrypted directly from the SSL/TLS record layer. In order to exploit this issue an application bug would have to be present that resulted in a call to SSL_read()/SSL_write() being issued after having already received a fatal error. OpenSSL version 1.0.2b-1.0.2m are affected. Fixed in OpenSSL 1.0.2n. OpenSSL 1.1.0 is not affected. CVE-2017-3737 openSUSE Leap 42.2:libopenssl-devel-1.0.2j-16.1 openSUSE Leap 42.2:libopenssl-devel-32bit-1.0.2j-16.1 openSUSE Leap 42.2:libopenssl1_0_0-1.0.2j-16.1 openSUSE Leap 42.2:libopenssl1_0_0-32bit-1.0.2j-16.1 openSUSE Leap 42.2:libopenssl1_0_0-hmac-1.0.2j-16.1 openSUSE Leap 42.2:libopenssl1_0_0-hmac-32bit-1.0.2j-16.1 openSUSE Leap 42.2:openssl-1.0.2j-16.1 openSUSE Leap 42.2:openssl-cavs-1.0.2j-16.1 openSUSE Leap 42.2:openssl-doc-1.0.2j-16.1 openSUSE Leap 42.3:libopenssl-devel-1.0.2j-16.1 openSUSE Leap 42.3:libopenssl-devel-32bit-1.0.2j-16.1 openSUSE Leap 42.3:libopenssl1_0_0-1.0.2j-16.1 openSUSE Leap 42.3:libopenssl1_0_0-32bit-1.0.2j-16.1 openSUSE Leap 42.3:libopenssl1_0_0-hmac-1.0.2j-16.1 openSUSE Leap 42.3:libopenssl1_0_0-hmac-32bit-1.0.2j-16.1 openSUSE Leap 42.3:openssl-1.0.2j-16.1 openSUSE Leap 42.3:openssl-cavs-1.0.2j-16.1 openSUSE Leap 42.3:openssl-doc-1.0.2j-16.1 moderate 5.4 AV:N/AC:H/Au:N/C:C/I:N/A:N Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2017-12/msg00076.html https://www.suse.com/security/cve/CVE-2017-3737.html CVE-2017-3737 https://bugzilla.suse.com/1071905 SUSE Bug 1071905 https://bugzilla.suse.com/1072322 SUSE Bug 1072322 https://bugzilla.suse.com/1076369 SUSE Bug 1076369 https://bugzilla.suse.com/1089987 SUSE Bug 1089987 https://bugzilla.suse.com/1089997 SUSE Bug 1089997 There is an overflow bug in the AVX2 Montgomery multiplication procedure used in exponentiation with 1024-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH1024 are considered just feasible, because most of the work necessary to deduce information about a private key may be performed offline. The amount of resources required for such an attack would be significant. However, for an attack on TLS to be meaningful, the server would have to share the DH1024 private key among multiple clients, which is no longer an option since CVE-2016-0701. This only affects processors that support the AVX2 but not ADX extensions like Intel Haswell (4th generation). Note: The impact from this issue is similar to CVE-2017-3736, CVE-2017-3732 and CVE-2015-3193. OpenSSL version 1.0.2-1.0.2m and 1.1.0-1.1.0g are affected. Fixed in OpenSSL 1.0.2n. Due to the low severity of this issue we are not issuing a new release of OpenSSL 1.1.0 at this time. The fix will be included in OpenSSL 1.1.0h when it becomes available. The fix is also available in commit e502cc86d in the OpenSSL git repository. CVE-2017-3738 openSUSE Leap 42.2:libopenssl-devel-1.0.2j-16.1 openSUSE Leap 42.2:libopenssl-devel-32bit-1.0.2j-16.1 openSUSE Leap 42.2:libopenssl1_0_0-1.0.2j-16.1 openSUSE Leap 42.2:libopenssl1_0_0-32bit-1.0.2j-16.1 openSUSE Leap 42.2:libopenssl1_0_0-hmac-1.0.2j-16.1 openSUSE Leap 42.2:libopenssl1_0_0-hmac-32bit-1.0.2j-16.1 openSUSE Leap 42.2:openssl-1.0.2j-16.1 openSUSE Leap 42.2:openssl-cavs-1.0.2j-16.1 openSUSE Leap 42.2:openssl-doc-1.0.2j-16.1 openSUSE Leap 42.3:libopenssl-devel-1.0.2j-16.1 openSUSE Leap 42.3:libopenssl-devel-32bit-1.0.2j-16.1 openSUSE Leap 42.3:libopenssl1_0_0-1.0.2j-16.1 openSUSE Leap 42.3:libopenssl1_0_0-32bit-1.0.2j-16.1 openSUSE Leap 42.3:libopenssl1_0_0-hmac-1.0.2j-16.1 openSUSE Leap 42.3:libopenssl1_0_0-hmac-32bit-1.0.2j-16.1 openSUSE Leap 42.3:openssl-1.0.2j-16.1 openSUSE Leap 42.3:openssl-cavs-1.0.2j-16.1 openSUSE Leap 42.3:openssl-doc-1.0.2j-16.1 low 5.4 AV:N/AC:H/Au:N/C:C/I:N/A:N Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2017-12/msg00076.html https://www.suse.com/security/cve/CVE-2017-3738.html CVE-2017-3738 https://bugzilla.suse.com/1071906 SUSE Bug 1071906 https://bugzilla.suse.com/1097757 SUSE Bug 1097757