Security update for ntp SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2015:0865-1 Final 1 1 2015-04-28T12:17:23Z current 2015-04-28T12:17:23Z 2015-04-28T12:17:23Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for ntp ntp was updated to fix two security related flaws as well as 'slew' mode handling for leap seconds. The following vulnerabilities were fixe: * ntpd could accept unauthenticated packets with symmetric key crypto. (CVE-2015-1798) * ntpd authentication did not protect symmetric associations against DoS attacks (CVE-2015-1799) * ntp-keygen may generate non-random symmetric keys on big-endian systems (bsc#928321, CVE-2015-3405). The following non-security issues were fixed: * Fix slew mode for leap seconds (bnc#918342). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-SLE-DESKTOP-12-2015-193,SUSE-SLE-SERVER-12-2015-193 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2015/suse-su-20150865-1/ Link for SUSE-SU-2015:0865-1 https://lists.suse.com/pipermail/sle-security-updates/2015-May/001378.html E-Mail link for SUSE-SU-2015:0865-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/918342 SUSE Bug 918342 https://bugzilla.suse.com/924202 SUSE Bug 924202 https://bugzilla.suse.com/928321 SUSE Bug 928321 https://www.suse.com/security/cve/CVE-2015-1798/ SUSE CVE CVE-2015-1798 page https://www.suse.com/security/cve/CVE-2015-1799/ SUSE CVE CVE-2015-1799 page https://www.suse.com/security/cve/CVE-2015-3405/ SUSE CVE CVE-2015-3405 page SUSE Linux Enterprise Desktop 12 SUSE Linux Enterprise Server 12 SUSE Linux Enterprise Server for SAP Applications 12 ntp-4.2.6p5-44.1 ntp-doc-4.2.6p5-44.1 ntp-4.2.6p5-44.1 as a component of SUSE Linux Enterprise Desktop 12 ntp-doc-4.2.6p5-44.1 as a component of SUSE Linux Enterprise Desktop 12 ntp-4.2.6p5-44.1 as a component of SUSE Linux Enterprise Server 12 ntp-doc-4.2.6p5-44.1 as a component of SUSE Linux Enterprise Server 12 ntp-4.2.6p5-44.1 as a component of SUSE Linux Enterprise Server for SAP Applications 12 ntp-doc-4.2.6p5-44.1 as a component of SUSE Linux Enterprise Server for SAP Applications 12 The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p2 requires a correct MAC only if the MAC field has a nonzero length, which makes it easier for man-in-the-middle attackers to spoof packets by omitting the MAC. CVE-2015-1798 SUSE Linux Enterprise Desktop 12:ntp-4.2.6p5-44.1 SUSE Linux Enterprise Desktop 12:ntp-doc-4.2.6p5-44.1 SUSE Linux Enterprise Server 12:ntp-4.2.6p5-44.1 SUSE Linux Enterprise Server 12:ntp-doc-4.2.6p5-44.1 SUSE Linux Enterprise Server for SAP Applications 12:ntp-4.2.6p5-44.1 SUSE Linux Enterprise Server for SAP Applications 12:ntp-doc-4.2.6p5-44.1 moderate 4 AV:N/AC:L/Au:S/C:N/I:P/A:N 1.8 AV:A/AC:H/Au:N/C:N/I:P/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/2015/suse-su-20150865-1/ https://www.suse.com/security/cve/CVE-2015-1798.html CVE-2015-1798 https://bugzilla.suse.com/924202 SUSE Bug 924202 https://bugzilla.suse.com/927497 SUSE Bug 927497 https://bugzilla.suse.com/928321 SUSE Bug 928321 https://bugzilla.suse.com/936327 SUSE Bug 936327 https://bugzilla.suse.com/957163 SUSE Bug 957163 The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 3.x and 4.x before 4.2.8p2 performs state-variable updates upon receiving certain invalid packets, which makes it easier for man-in-the-middle attackers to cause a denial of service (synchronization loss) by spoofing the source IP address of a peer. CVE-2015-1799 SUSE Linux Enterprise Desktop 12:ntp-4.2.6p5-44.1 SUSE Linux Enterprise Desktop 12:ntp-doc-4.2.6p5-44.1 SUSE Linux Enterprise Server 12:ntp-4.2.6p5-44.1 SUSE Linux Enterprise Server 12:ntp-doc-4.2.6p5-44.1 SUSE Linux Enterprise Server for SAP Applications 12:ntp-4.2.6p5-44.1 SUSE Linux Enterprise Server for SAP Applications 12:ntp-doc-4.2.6p5-44.1 important 4.3 AV:A/AC:M/Au:N/C:N/I:P/A:P 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/2015/suse-su-20150865-1/ https://www.suse.com/security/cve/CVE-2015-1799.html CVE-2015-1799 https://bugzilla.suse.com/924202 SUSE Bug 924202 https://bugzilla.suse.com/927497 SUSE Bug 927497 https://bugzilla.suse.com/928321 SUSE Bug 928321 https://bugzilla.suse.com/936327 SUSE Bug 936327 https://bugzilla.suse.com/943565 SUSE Bug 943565 https://bugzilla.suse.com/957163 SUSE Bug 957163 https://bugzilla.suse.com/959243 SUSE Bug 959243 https://bugzilla.suse.com/962624 SUSE Bug 962624 ntp-keygen in ntp 4.2.8px before 4.2.8p2-RC2 and 4.3.x before 4.3.12 does not generate MD5 keys with sufficient entropy on big endian machines when the lowest order byte of the temp variable is between 0x20 and 0x7f and not #, which might allow remote attackers to obtain the value of generated MD5 keys via a brute force attack with the 93 possible keys. CVE-2015-3405 SUSE Linux Enterprise Desktop 12:ntp-4.2.6p5-44.1 SUSE Linux Enterprise Desktop 12:ntp-doc-4.2.6p5-44.1 SUSE Linux Enterprise Server 12:ntp-4.2.6p5-44.1 SUSE Linux Enterprise Server 12:ntp-doc-4.2.6p5-44.1 SUSE Linux Enterprise Server for SAP Applications 12:ntp-4.2.6p5-44.1 SUSE Linux Enterprise Server for SAP Applications 12:ntp-doc-4.2.6p5-44.1 important 5 AV:N/AC:L/Au:N/C:P/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/2015/suse-su-20150865-1/ https://www.suse.com/security/cve/CVE-2015-3405.html CVE-2015-3405 https://bugzilla.suse.com/924202 SUSE Bug 924202 https://bugzilla.suse.com/928321 SUSE Bug 928321