Security update for xorg-x11-server SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2017:1675-1 Final 1 1 2017-06-26T08:22:49Z current 2017-06-26T08:22:49Z 2017-06-26T08:22:49Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for xorg-x11-server This update for xorg-x11-server provides the following fixes: - Remove unused function with use-after-free issue. (bsc#1025035) - Use arc4random to generate cookies. (bsc#1025084) - Prevent timing attack against MIT cookie. (bsc#1025029, CVE-2017-2624) - XDrawArc performance improvement. (bsc#1019649) - Re-enable indirect GLX by default. (bsc#1039042) - Add IndirectGLX ServerFlags option which allows users to enable or disable indirect GLX. (bsc#1032509) - Fix dashing in GLAMOR. (bsc#1021803) - Fix X server crash on drawing dashed lines. (bsc#1025985) The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-SLE-DESKTOP-12-SP2-2017-1037,SUSE-SLE-RPI-12-SP2-2017-1037,SUSE-SLE-SDK-12-SP2-2017-1037,SUSE-SLE-SERVER-12-SP2-2017-1037 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2017/suse-su-20171675-1/ Link for SUSE-SU-2017:1675-1 https://lists.suse.com/pipermail/sle-security-updates/2017-June/002980.html E-Mail link for SUSE-SU-2017:1675-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1019649 SUSE Bug 1019649 https://bugzilla.suse.com/1021803 SUSE Bug 1021803 https://bugzilla.suse.com/1025029 SUSE Bug 1025029 https://bugzilla.suse.com/1025035 SUSE Bug 1025035 https://bugzilla.suse.com/1025084 SUSE Bug 1025084 https://bugzilla.suse.com/1025985 SUSE Bug 1025985 https://bugzilla.suse.com/1032509 SUSE Bug 1032509 https://bugzilla.suse.com/1039042 SUSE Bug 1039042 https://www.suse.com/security/cve/CVE-2017-2624/ SUSE CVE CVE-2017-2624 page SUSE Linux Enterprise Desktop 12 SP2 SUSE Linux Enterprise Server 12 SP2 SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 SUSE Linux Enterprise Server for SAP Applications 12 SP2 SUSE Linux Enterprise Software Development Kit 12 SP2 xorg-x11-server-7.6_1.18.3-71.1 xorg-x11-server-extra-7.6_1.18.3-71.1 xorg-x11-server-sdk-7.6_1.18.3-71.1 xorg-x11-server-7.6_1.18.3-71.1 as a component of SUSE Linux Enterprise Desktop 12 SP2 xorg-x11-server-extra-7.6_1.18.3-71.1 as a component of SUSE Linux Enterprise Desktop 12 SP2 xorg-x11-server-7.6_1.18.3-71.1 as a component of SUSE Linux Enterprise Server 12 SP2 xorg-x11-server-extra-7.6_1.18.3-71.1 as a component of SUSE Linux Enterprise Server 12 SP2 xorg-x11-server-7.6_1.18.3-71.1 as a component of SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 xorg-x11-server-extra-7.6_1.18.3-71.1 as a component of SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 xorg-x11-server-7.6_1.18.3-71.1 as a component of SUSE Linux Enterprise Server for SAP Applications 12 SP2 xorg-x11-server-extra-7.6_1.18.3-71.1 as a component of SUSE Linux Enterprise Server for SAP Applications 12 SP2 xorg-x11-server-sdk-7.6_1.18.3-71.1 as a component of SUSE Linux Enterprise Software Development Kit 12 SP2 It was found that xorg-x11-server before 1.19.0 including uses memcmp() to check the received MIT cookie against a series of valid cookies. If the cookie is correct, it is allowed to attach to the Xorg session. Since most memcmp() implementations return after an invalid byte is seen, this causes a time difference between a valid and invalid byte, which could allow an efficient brute force attack. CVE-2017-2624 SUSE Linux Enterprise Desktop 12 SP2:xorg-x11-server-7.6_1.18.3-71.1 SUSE Linux Enterprise Desktop 12 SP2:xorg-x11-server-extra-7.6_1.18.3-71.1 SUSE Linux Enterprise Server 12 SP2:xorg-x11-server-7.6_1.18.3-71.1 SUSE Linux Enterprise Server 12 SP2:xorg-x11-server-extra-7.6_1.18.3-71.1 SUSE Linux Enterprise Server for Raspberry Pi 12 SP2:xorg-x11-server-7.6_1.18.3-71.1 SUSE Linux Enterprise Server for Raspberry Pi 12 SP2:xorg-x11-server-extra-7.6_1.18.3-71.1 SUSE Linux Enterprise Server for SAP Applications 12 SP2:xorg-x11-server-7.6_1.18.3-71.1 SUSE Linux Enterprise Server for SAP Applications 12 SP2:xorg-x11-server-extra-7.6_1.18.3-71.1 SUSE Linux Enterprise Software Development Kit 12 SP2:xorg-x11-server-sdk-7.6_1.18.3-71.1 moderate 4 AV:L/AC:H/Au:N/C:C/I:N/A:N To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2017/suse-su-20171675-1/ https://www.suse.com/security/cve/CVE-2017-2624.html CVE-2017-2624 https://bugzilla.suse.com/1025029 SUSE Bug 1025029 https://bugzilla.suse.com/1025639 SUSE Bug 1025639 https://bugzilla.suse.com/1035283 SUSE Bug 1035283