Security update for ntp SUSE Patch security@suse.de SUSE Security Team openSUSE-SU-2016:1329-1 Final 1 1 2016-05-18T08:55:15Z current 2016-05-18T08:55:15Z 2016-05-18T08:55:15Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for ntp This update for ntp to 4.2.8p7 fixes the following issues: * CVE-2016-1547, bsc#977459: Validate crypto-NAKs, AKA: CRYPTO-NAK DoS. * CVE-2016-1548, bsc#977461: Interleave-pivot * CVE-2016-1549, bsc#977451: Sybil vulnerability: ephemeral association attack. * CVE-2016-1550, bsc#977464: Improve NTP security against buffer comparison timing attacks. * CVE-2016-1551, bsc#977450: Refclock impersonation vulnerability * CVE-2016-2516, bsc#977452: Duplicate IPs on unconfig directives will cause an assertion botch in ntpd. * CVE-2016-2517, bsc#977455: remote configuration trustedkey/ requestkey/controlkey values are not properly validated. * CVE-2016-2518, bsc#977457: Crafted addpeer with hmode > 7 causes array wraparound with MATCH_ASSOC. * CVE-2016-2519, bsc#977458: ctl_getitem() return value not always checked. * This update also improves the fixes for: CVE-2015-7704, CVE-2015-7705, CVE-2015-7974 Bugs fixed: - Restrict the parser in the startup script to the first occurrance of 'keys' and 'controlkey' in ntp.conf (bsc#957226). This update was imported from the SUSE:SLE-12-SP1: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/2016-05/msg00052.html E-Mail link for openSUSE-SU-2016:1329-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings openSUSE Leap 42.1 ntp-4.2.8p7-21.1 ntp-doc-4.2.8p7-21.1 ntp-4.2.8p7-21.1 as a component of openSUSE Leap 42.1 ntp-doc-4.2.8p7-21.1 as a component of openSUSE Leap 42.1 The ntpd client in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service via a number of crafted "KOD" messages. CVE-2015-7704 openSUSE Leap 42.1:ntp-4.2.8p7-21.1 openSUSE Leap 42.1:ntp-doc-4.2.8p7-21.1 moderate Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html https://www.suse.com/security/cve/CVE-2015-7704.html CVE-2015-7704 https://bugzilla.suse.com/1010964 SUSE Bug 1010964 https://bugzilla.suse.com/951608 SUSE Bug 951608 https://bugzilla.suse.com/952611 SUSE Bug 952611 https://bugzilla.suse.com/959243 SUSE Bug 959243 https://bugzilla.suse.com/977446 SUSE Bug 977446 The rate limiting feature in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to have unspecified impact via a large number of crafted requests. CVE-2015-7705 openSUSE Leap 42.1:ntp-4.2.8p7-21.1 openSUSE Leap 42.1:ntp-doc-4.2.8p7-21.1 moderate Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html https://www.suse.com/security/cve/CVE-2015-7705.html CVE-2015-7705 https://bugzilla.suse.com/1010964 SUSE Bug 1010964 https://bugzilla.suse.com/951608 SUSE Bug 951608 https://bugzilla.suse.com/952611 SUSE Bug 952611 https://bugzilla.suse.com/959243 SUSE Bug 959243 NTP 4.x before 4.2.8p6 and 4.3.x before 4.3.90 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via an arbitrary trusted key, aka a "skeleton key." CVE-2015-7974 openSUSE Leap 42.1:ntp-4.2.8p7-21.1 openSUSE Leap 42.1:ntp-doc-4.2.8p7-21.1 low 2.1 AV:N/AC:H/Au:S/C:N/I:P/A:N Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html https://www.suse.com/security/cve/CVE-2015-7974.html CVE-2015-7974 https://bugzilla.suse.com/959243 SUSE Bug 959243 https://bugzilla.suse.com/962960 SUSE Bug 962960 https://bugzilla.suse.com/962995 SUSE Bug 962995 An off-path attacker can cause a preemptible client association to be demobilized in NTP 4.2.8p4 and earlier and NTPSec a5fb34b9cc89b92a8fef2f459004865c93bb7f92 by sending a crypto NAK packet to a victim client with a spoofed source address of an existing associated peer. This is true even if authentication is enabled. CVE-2016-1547 openSUSE Leap 42.1:ntp-4.2.8p7-21.1 openSUSE Leap 42.1:ntp-doc-4.2.8p7-21.1 moderate 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html https://www.suse.com/security/cve/CVE-2016-1547.html CVE-2016-1547 https://bugzilla.suse.com/962784 SUSE Bug 962784 https://bugzilla.suse.com/977446 SUSE Bug 977446 https://bugzilla.suse.com/977459 SUSE Bug 977459 https://bugzilla.suse.com/982064 SUSE Bug 982064 https://bugzilla.suse.com/982065 SUSE Bug 982065 An attacker can spoof a packet from a legitimate ntpd server with an origin timestamp that matches the peer->dst timestamp recorded for that server. After making this switch, the client in NTP 4.2.8p4 and earlier and NTPSec aa48d001683e5b791a743ec9c575aaf7d867a2b0c will reject all future legitimate server responses. It is possible to force the victim client to move time after the mode has been changed. ntpq gives no indication that the mode has been switched. CVE-2016-1548 openSUSE Leap 42.1:ntp-4.2.8p7-21.1 openSUSE Leap 42.1:ntp-doc-4.2.8p7-21.1 moderate 6.4 AV:N/AC:L/Au:N/C:N/I:P/A:P Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html https://www.suse.com/security/cve/CVE-2016-1548.html CVE-2016-1548 https://bugzilla.suse.com/959243 SUSE Bug 959243 https://bugzilla.suse.com/977446 SUSE Bug 977446 https://bugzilla.suse.com/977461 SUSE Bug 977461 https://bugzilla.suse.com/982068 SUSE Bug 982068 A malicious authenticated peer can create arbitrarily-many ephemeral associations in order to win the clock selection algorithm in ntpd in NTP 4.2.8p4 and earlier and NTPsec 3e160db8dc248a0bcb053b56a80167dc742d2b74 and a5fb34b9cc89b92a8fef2f459004865c93bb7f92 and modify a victim's clock. CVE-2016-1549 openSUSE Leap 42.1:ntp-4.2.8p7-21.1 openSUSE Leap 42.1:ntp-doc-4.2.8p7-21.1 moderate 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html https://www.suse.com/security/cve/CVE-2016-1549.html CVE-2016-1549 https://bugzilla.suse.com/1083424 SUSE Bug 1083424 https://bugzilla.suse.com/977446 SUSE Bug 977446 https://bugzilla.suse.com/977451 SUSE Bug 977451 An exploitable vulnerability exists in the message authentication functionality of libntp in ntp 4.2.8p4 and NTPSec a5fb34b9cc89b92a8fef2f459004865c93bb7f92. An attacker can send a series of crafted messages to attempt to recover the message digest key. CVE-2016-1550 openSUSE Leap 42.1:ntp-4.2.8p7-21.1 openSUSE Leap 42.1:ntp-doc-4.2.8p7-21.1 moderate 2.6 AV:L/AC:H/Au:N/C:P/I:P/A:N Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html https://www.suse.com/security/cve/CVE-2016-1550.html CVE-2016-1550 https://bugzilla.suse.com/977446 SUSE Bug 977446 https://bugzilla.suse.com/977464 SUSE Bug 977464 ntpd in NTP 4.2.8p3 and NTPsec a5fb34b9cc89b92a8fef2f459004865c93bb7f92 relies on the underlying operating system to protect it from requests that impersonate reference clocks. Because reference clocks are treated like other peers and stored in the same structure, any packet with a source ip address of a reference clock (127.127.1.1 for example) that reaches the receive() function will match that reference clock's peer record and will be treated as a trusted peer. Any system that lacks the typical martian packet filtering which would block these packets is in danger of having its time controlled by an attacker. CVE-2016-1551 openSUSE Leap 42.1:ntp-4.2.8p7-21.1 openSUSE Leap 42.1:ntp-doc-4.2.8p7-21.1 moderate 2.6 AV:N/AC:H/Au:N/C:N/I:P/A:N Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html https://www.suse.com/security/cve/CVE-2016-1551.html CVE-2016-1551 https://bugzilla.suse.com/977446 SUSE Bug 977446 https://bugzilla.suse.com/977450 SUSE Bug 977450 NTP before 4.2.8p7 and 4.3.x before 4.3.92, when mode7 is enabled, allows remote attackers to cause a denial of service (ntpd abort) by using the same IP address multiple times in an unconfig directive. CVE-2016-2516 openSUSE Leap 42.1:ntp-4.2.8p7-21.1 openSUSE Leap 42.1:ntp-doc-4.2.8p7-21.1 moderate 6.3 AV:N/AC:M/Au:S/C:N/I:N/A:C Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html https://www.suse.com/security/cve/CVE-2016-2516.html CVE-2016-2516 https://bugzilla.suse.com/0 SUSE Bug 0 https://bugzilla.suse.com/977446 SUSE Bug 977446 https://bugzilla.suse.com/977452 SUSE Bug 977452 NTP before 4.2.8p7 and 4.3.x before 4.3.92 allows remote attackers to cause a denial of service (prevent subsequent authentication) by leveraging knowledge of the controlkey or requestkey and sending a crafted packet to ntpd, which changes the value of trustedkey, controlkey, or requestkey. NOTE: this vulnerability exists because of a CVE-2016-2516 regression. CVE-2016-2517 openSUSE Leap 42.1:ntp-4.2.8p7-21.1 openSUSE Leap 42.1:ntp-doc-4.2.8p7-21.1 moderate 4.9 AV:N/AC:H/Au:S/C:N/I:N/A:C Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html https://www.suse.com/security/cve/CVE-2016-2517.html CVE-2016-2517 https://bugzilla.suse.com/0 SUSE Bug 0 https://bugzilla.suse.com/977446 SUSE Bug 977446 https://bugzilla.suse.com/977455 SUSE Bug 977455 The MATCH_ASSOC function in NTP before version 4.2.8p9 and 4.3.x before 4.3.92 allows remote attackers to cause an out-of-bounds reference via an addpeer request with a large hmode value. CVE-2016-2518 openSUSE Leap 42.1:ntp-4.2.8p7-21.1 openSUSE Leap 42.1:ntp-doc-4.2.8p7-21.1 moderate 2.1 AV:N/AC:H/Au:S/C:N/I:N/A:P Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html https://www.suse.com/security/cve/CVE-2016-2518.html CVE-2016-2518 https://bugzilla.suse.com/977446 SUSE Bug 977446 https://bugzilla.suse.com/977457 SUSE Bug 977457 ntpd in NTP before 4.2.8p7 and 4.3.x before 4.3.92 allows remote attackers to cause a denial of service (ntpd abort) by a large request data value, which triggers the ctl_getitem function to return a NULL value. CVE-2016-2519 openSUSE Leap 42.1:ntp-4.2.8p7-21.1 openSUSE Leap 42.1:ntp-doc-4.2.8p7-21.1 moderate 4.9 AV:N/AC:H/Au:S/C:N/I:N/A:C Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html https://www.suse.com/security/cve/CVE-2016-2519.html CVE-2016-2519 https://bugzilla.suse.com/0 SUSE Bug 0 https://bugzilla.suse.com/959243 SUSE Bug 959243 https://bugzilla.suse.com/977446 SUSE Bug 977446 https://bugzilla.suse.com/977458 SUSE Bug 977458