ID

VAR-201504-0362

CVE

CVE-2015-1799

TITLE

NTP Project ntpd reference implementation contains multiple vulnerabilities

DESCRIPTION

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. NTP Project ntpd reference implementation accepts unauthenticated packets with symmetric key cryptography and does not protect symmetric associations against denial of service attacks. NTP of ntpd of ntp_proto.c Inside receive of symmetric-key The function is used even when a specific invalid packet is received. state variable Service operation disruption to perform update ( Sync failure ) There are vulnerabilities that are put into a state. Supplementary information : CWE Vulnerability type by CWE-17: Code ( code ) Has been identified. http://cwe.mitre.org/data/definitions/17.htmlMan-in-the-middle attacks (man-in-the-middle attack) By the source of the peer IP Denial of service by spoofing addresses ( Sync failure ) There is a possibility of being put into a state. NTP is prone to a denial-of-service vulnerability. Successful exploits may allow the attacker to cause a denial-of-service condition. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201509-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: NTP: Multiple vulnerablities Date: September 24, 2015 Bugs: #545836, #553682 ID: 201509-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities have been found in NTP, the worst of which could lead to arbitrary code execution. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/ntp < 4.2.8_p3 >= 4.2.8_p3 Description =========== Multiple vulnerabilities have been discovered in NTP. Please review the CVE identifiers referenced below for details. Impact ====== A remote attacker could possibly execute arbitrary code with the privileges of the process, or cause a Denial of Service condition. Resolution ========== All NTP users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/ntp-4.2.8_p3" References ========== [ 1 ] CVE-2015-1798 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-1798 [ 2 ] CVE-2015-1799 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-1799 [ 3 ] CVE-2015-5146 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-5146 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201509-01 Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org. License ======= Copyright 2015 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5 . Here are the details from the Slackware 14.1 ChangeLog: +--------------------------+ patches/packages/ntp-4.2.8p2-i486-1_slack14.1.txz: Upgraded. For more information, see: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1798 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1799 (* Security fix *) +--------------------------+ Where to find the new packages: +-----------------------------+ Thanks to the friendly folks at the OSU Open Source Lab (http://osuosl.org) for donating FTP and rsync hosting to the Slackware project! :-) Also see the "Get Slack" section on http://slackware.com for additional mirror sites near you. Updated package for Slackware 13.0: ftp://ftp.slackware.com/pub/slackware/slackware-13.0/patches/packages/ntp-4.2.8p2-i486-1_slack13.0.txz Updated package for Slackware x86_64 13.0: ftp://ftp.slackware.com/pub/slackware/slackware64-13.0/patches/packages/ntp-4.2.8p2-x86_64-1_slack13.0.txz Updated package for Slackware 13.1: ftp://ftp.slackware.com/pub/slackware/slackware-13.1/patches/packages/ntp-4.2.8p2-i486-1_slack13.1.txz Updated package for Slackware x86_64 13.1: ftp://ftp.slackware.com/pub/slackware/slackware64-13.1/patches/packages/ntp-4.2.8p2-x86_64-1_slack13.1.txz Updated package for Slackware 13.37: ftp://ftp.slackware.com/pub/slackware/slackware-13.37/patches/packages/ntp-4.2.8p2-i486-1_slack13.37.txz Updated package for Slackware x86_64 13.37: ftp://ftp.slackware.com/pub/slackware/slackware64-13.37/patches/packages/ntp-4.2.8p2-x86_64-1_slack13.37.txz Updated package for Slackware 14.0: ftp://ftp.slackware.com/pub/slackware/slackware-14.0/patches/packages/ntp-4.2.8p2-i486-1_slack14.0.txz Updated package for Slackware x86_64 14.0: ftp://ftp.slackware.com/pub/slackware/slackware64-14.0/patches/packages/ntp-4.2.8p2-x86_64-1_slack14.0.txz Updated package for Slackware 14.1: ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/ntp-4.2.8p2-i486-1_slack14.1.txz Updated package for Slackware x86_64 14.1: ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/ntp-4.2.8p2-x86_64-1_slack14.1.txz Updated package for Slackware -current: ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/ntp-4.2.8p2-i486-1.txz Updated package for Slackware x86_64 -current: ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/ntp-4.2.8p2-x86_64-1.txz MD5 signatures: +-------------+ Slackware 13.0 package: 570bb3e4bb7b065101fa4963e757d7e7 ntp-4.2.8p2-i486-1_slack13.0.txz Slackware x86_64 13.0 package: e6add42a70a66496be2d4978370c2799 ntp-4.2.8p2-x86_64-1_slack13.0.txz Slackware 13.1 package: 99f1cfa5e23a256d840ed0a56b7f9400 ntp-4.2.8p2-i486-1_slack13.1.txz Slackware x86_64 13.1 package: 0a6622196521e084d36cda13fc6da824 ntp-4.2.8p2-x86_64-1_slack13.1.txz Slackware 13.37 package: 28cfe042c585cf036582ce5f0c2daadf ntp-4.2.8p2-i486-1_slack13.37.txz Slackware x86_64 13.37 package: c436da55cd2d113142410a9d982c5ac5 ntp-4.2.8p2-x86_64-1_slack13.37.txz Slackware 14.0 package: cf69f8ecb5e4c1902dfb22d0f9685278 ntp-4.2.8p2-i486-1_slack14.0.txz Slackware x86_64 14.0 package: 9c8344ec56d5d2335fd7370e2f9cf639 ntp-4.2.8p2-x86_64-1_slack14.0.txz Slackware 14.1 package: 9dcf0eafa851ad018f8341c2fb9307b5 ntp-4.2.8p2-i486-1_slack14.1.txz Slackware x86_64 14.1 package: e0c063f4e46a72ec86012a46299a46df ntp-4.2.8p2-x86_64-1_slack14.1.txz Slackware -current package: 5f72de16e3bb6cd216e7694a49671cee n/ntp-4.2.8p2-i486-1.txz Slackware x86_64 -current package: 1ba531770e4a2ae6e8e7116aaa26523e n/ntp-4.2.8p2-x86_64-1.txz Installation instructions: +------------------------+ Upgrade the package as root: # upgradepkg ntp-4.2.8p2-i486-1_slack14.1.txz Then, restart the NTP daemon: # sh /etc/rc.d/rc.ntpd restart +-----+ Slackware Linux Security Team http://slackware.com/gpg-key security@slackware.com +------------------------------------------------------------------------+ | To leave the slackware-security mailing list: | +------------------------------------------------------------------------+ | Send an email to majordomo@slackware.com with this text in the body of | | the email message: | | | | unsubscribe slackware-security | | | | You will get a confirmation message back containing instructions to | | complete the process. Please do not reply to this email address. Release Date: 2015-05-19 Last Updated: 2015-05-19 Potential Security Impact: Remote Denial of Service (DoS), or other vulnerabilities Source: Hewlett-Packard Company, HP Software Security Response Team VULNERABILITY SUMMARY Potential security vulnerabilities have been identified with HP-UX running NTP. These could be exploited remotely to create a Denial of Service (DoS), or other vulnerabilities. References: CVE-2015-1798 - Symmetric-Key feature allows MAC address spoofing (CWE-17) CVE-2015-1799 - Symmetric-Key feature allows denial of service (CWE-17) SSRT102029 CERT-VU#852879 SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed. HP-UX B.11.31 running NTP v4.x, specifically version C.4.2.6.5.0 or previous BACKGROUND CVSS 2.0 Base Metrics =========================================================== Reference Base Vector Base Score CVE-2015-1798 (AV:A/AC:H/Au:N/C:N/I:P/A:N) 1.8 CVE-2015-1799 (AV:A/AC:M/Au:N/C:N/I:P/A:P) 4.3 =========================================================== Information on CVSS is documented in HP Customer Notice: HPSN-2008-002 RESOLUTION HP has provided the following solution for HP-UX B.11.31. A new B.11.31 depot for HP-UX-NTP_C.4.2.6.6.0 is available here: https://h20392.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumber =HPUX-NTP Reference: http://support.ntp.org/bin/view/Main/SecurityNotice MANUAL ACTIONS: Yes - Update PRODUCT SPECIFIC INFORMATION HP-UX Software Assistant: HP-UX Software Assistant is an enhanced application that replaces HP-UX Security Patch Check. It analyzes all Security Bulletins issued by HP and lists recommended actions that may apply to a specific HP-UX system. It can also download patches and create a depot automatically. For more information see: https://www.hp.com/go/swa The following text is for use by the HP-UX Software Assistant. AFFECTED VERSIONS HP-UX B.11.31 ================== NTP.INETSVCS2-BOOT NTP.NTP-AUX NTP.NTP-RUN action: install revision C.4.2.6.6.0 or subsequent END AFFECTED VERSIONS HISTORY Version:1 (rev.1) - 19 May 2015 Initial release Third Party Security Patches: Third party security patches that are to be installed on systems running HP software products should be applied in accordance with the customer's patch management policy. Support: For issues about implementing the recommendations of this Security Bulletin, contact normal HP Services support channel. For other issues about the content of this Security Bulletin, send e-mail to security-alert@hp.com. Report: To report a potential security vulnerability with any HP supported product, send Email to: security-alert@hp.com Subscribe: To initiate a subscription to receive future HP Security Bulletin alerts via Email: http://h41183.www4.hp.com/signup_alerts.php?jumpid=hpsc_secbulletins Security Bulletin Archive: A list of recently released Security Bulletins is available here: https://h20564.www2.hp.com/portal/site/hpsc/public/kb/secBullArchive/ Software Product Category: The Software Product Category is represented in the title by the two characters following HPSB. 3C = 3COM 3P = 3rd Party Software GN = HP General Software HF = HP Hardware and Firmware MP = MPE/iX MU = Multi-Platform Software NS = NonStop Servers OV = OpenVMS PI = Printing and Imaging PV = ProCurve ST = Storage Software TU = Tru64 UNIX UX = HP-UX Copyright 2015 Hewlett-Packard Development Company, L.P. Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein. The information provided is provided "as is" without warranty of any kind. To the extent permitted by law, neither HP or its affiliates, subcontractors or suppliers will be liable for incidental,special or consequential damages including downtime cost; lost profits; damages relating to the procurement of substitute products or services; or damages for loss of data, or software restoration. The information in this document is subject to change without notice. Hewlett-Packard Company and the names of Hewlett-Packard products referenced herein are trademarks of Hewlett-Packard Company in the United States and other countries. Other product and company names mentioned herein may be trademarks of their respective owners. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-15:07.ntp Security Advisory The FreeBSD Project Topic: Multiple vulnerabilities of ntp Category: contrib Module: ntp Announced: 2015-04-07 Credits: Network Time Foundation Affects: All supported versions of FreeBSD. Corrected: 2015-04-07 20:20:24 UTC (stable/10, 10.1-STABLE) 2015-04-07 20:21:01 UTC (releng/10.1, 10.1-RELEASE-p9) 2015-04-07 20:20:44 UTC (stable/9, 9.3-STABLE) 2015-04-07 20:21:23 UTC (releng/9.3, 9.3-RELEASE-p13) 2015-04-07 20:20:44 UTC (stable/8, 8.4-STABLE) 2015-04-07 20:21:23 UTC (releng/8.4, 8.4-RELEASE-p27) CVE Name: CVE-2014-9297, CVE-2015-1798, CVE-2015-1799 For general information regarding FreeBSD Security Advisories, including descriptions of the fields above, security branches, and the following sections, please visit <URL:https://security.FreeBSD.org/>. II. Problem Description The vallen packet value is not validated in several code paths in ntp_crypto.c. [CVE-2015-1798] NTP state variables are updated prior to validating the received packets. [CVE-2015-1799] III. [CVE-2015-1798] An attacker knowing that NTP hosts A and B are peering with each other (symmetric association) can periodically send a specially crafted or replayed packet which will break the synchronization between the two peers due to transmit timestamp mismatch, preventing the two nodes from synchronizing with each other, even when authentication is enabled. [CVE-2015-1799] IV. Workaround No workaround is available, but systems not running ntpd(8) are not affected. 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 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 3) 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. # fetch https://security.FreeBSD.org/patches/SA-15:07/ntp.patch # fetch https://security.FreeBSD.org/patches/SA-15:07/ntp.patch.asc # gpg --verify ntp.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:https://www.FreeBSD.org/handbook/makeworld.html>. Restart the applicable daemons, or reboot the system. VI. Correction details The following list contains the correction revision numbers for each affected branch. Branch/path Revision - ------------------------------------------------------------------------- stable/8/ r281231 releng/8.4/ r281233 stable/9/ r281231 releng/9.3/ r281233 stable/10/ r281230 releng/10.1/ r281232 - ------------------------------------------------------------------------- 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:https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN> VII. _______________________________________________________________________ References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1798 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1799 http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities _______________________________________________________________________ Updated Packages: Mandriva Business Server 1/X86_64: b0f98e6b8700e3e3413582fe28d1ba06 mbs1/x86_64/ntp-4.2.6p5-8.4.mbs1.x86_64.rpm d864780718c95368bf9ec81643e35e5d mbs1/x86_64/ntp-client-4.2.6p5-8.4.mbs1.x86_64.rpm 6f457df52d46fb8e6b0fe44aead752eb mbs1/x86_64/ntp-doc-4.2.6p5-8.4.mbs1.x86_64.rpm b4bff3de733ea6d2839a77a9211ce02b mbs1/SRPMS/ntp-4.2.6p5-8.4.mbs1.src.rpm Mandriva Business Server 2/X86_64: e9ac2f3465bcc50199aef8a4d553927f mbs2/x86_64/ntp-4.2.6p5-16.3.mbs2.x86_64.rpm cf2970c3c56efbfa84f964532ad64544 mbs2/x86_64/ntp-client-4.2.6p5-16.3.mbs2.x86_64.rpm 1ae1b1d3c2e7bdea25c01c33652b6169 mbs2/x86_64/ntp-doc-4.2.6p5-16.3.mbs2.noarch.rpm d250433009fd187361bda6338dc5eede mbs2/SRPMS/ntp-4.2.6p5-16.3.mbs2.src.rpm _______________________________________________________________________ To upgrade automatically use MandrivaUpdate or urpmi. The verification of md5 checksums and GPG signatures is performed automatically for you. You can obtain the GPG public key of the Mandriva Security Team by executing: gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98 You can view other update advisories for Mandriva Linux at: http://www.mandriva.com/en/support/security/advisories/ If you want to report vulnerabilities, please contact security_(at)_mandriva.com _______________________________________________________________________ Type Bits/KeyID Date User ID pub 1024D/22458A98 2000-07-10 Mandriva Security Team <security*mandriva.com> -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iD8DBQFVJ6PCmqjQ0CJFipgRAkidAKCQXSLNnIG/bOaH5Cf128VX61GlgwCfcOtE KGIFB9onVvWrhThuQdgmYJg= =QHmi -----END PGP SIGNATURE----- . ============================================================================ Ubuntu Security Notice USN-2567-1 April 13, 2015 ntp vulnerabilities ============================================================================ A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 14.10 - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS Summary: Several security issues were fixed in NTP. This issue could either cause ntp-keygen to hang, or could result in non-random keys. (CVE number pending) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 14.10: ntp 1:4.2.6.p5+dfsg-3ubuntu2.14.10.3 Ubuntu 14.04 LTS: ntp 1:4.2.6.p5+dfsg-3ubuntu2.14.04.3 Ubuntu 12.04 LTS: ntp 1:4.2.6.p3+dfsg-1ubuntu3.4 In general, a standard system update will make all the necessary changes. 7) - noarch, x86_64 3. These packages include the ntpd service which continuously adjusts system time and utilities used to query and configure the ntpd service. (BZ#1191111) * The ntpd service could previously join multicast groups only when starting, which caused problems if ntpd was started during system boot before network was configured. With this update, ntpd attempts to join multicast groups every time network configuration is changed. (BZ#1171640) Enhancements: * This update adds support for configurable Differentiated Services Code Points (DSCP) in NTP packets, simplifying configuration in large networks where different NTP implementations or versions are using different DSCP values. (BZ#1202828) * This update adds the ability to configure separate clock stepping thresholds for each direction (backward and forward). Use the "stepback" and "stepfwd" options to configure each threshold. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: ntp security, bug fix, and enhancement update Advisory ID: RHSA-2015:1459-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-1459.html Issue date: 2015-07-22 Updated on: 2015-02-25 CVE Names: CVE-2014-9297 CVE-2014-9298 CVE-2015-1798 CVE-2015-1799 CVE-2015-3405 ===================================================================== 1. Summary: Updated ntp packages that fix multiple security issues, several bugs, and add two enhancements are now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch, x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, noarch, x86_64 3. Description: The Network Time Protocol (NTP) is used to synchronize a computer's time with another referenced time source. It was found that because NTP's access control was based on a source IP address, an attacker could bypass source IP restrictions and send malicious control and configuration packets by spoofing ::1 addresses. (CVE-2014-9298) A denial of service flaw was found in the way NTP hosts that were peering with each other authenticated themselves before updating their internal state variables. An attacker could send packets to one peer host, which could cascade to other peers, and stop the synchronization process among the reached peers. (CVE-2015-1799) A flaw was found in the way the ntp-keygen utility generated MD5 symmetric keys on big-endian systems. An attacker could possibly use this flaw to guess generated MD5 keys, which could then be used to spoof an NTP client or server. (CVE-2015-3405) A stack-based buffer overflow was found in the way the NTP autokey protocol was implemented. When an NTP client decrypted a secret received from an NTP server, it could cause that client to crash. (CVE-2014-9297) It was found that ntpd did not check whether a Message Authentication Code (MAC) was present in a received packet when ntpd was configured to use symmetric cryptographic keys. A man-in-the-middle attacker could use this flaw to send crafted packets that would be accepted by a client or a peer without the attacker knowing the symmetric key. (CVE-2015-1798) The CVE-2015-1798 and CVE-2015-1799 issues were discovered by Miroslav Lichvár of Red Hat. Bug fixes: * The ntpd daemon truncated symmetric keys specified in the key file to 20 bytes. As a consequence, it was impossible to configure NTP authentication to work with peers that use longer keys. The maximum length of keys has now been changed to 32 bytes. (BZ#1053551) * The ntp-keygen utility used the exponent of 3 when generating RSA keys, and generating RSA keys failed when FIPS mode was enabled. ntp-keygen has been modified to use the exponent of 65537, and generating keys in FIPS mode now works as expected. (BZ#1184421) * The ntpd daemon included a root delay when calculating its root dispersion. Consequently, the NTP server reported larger root dispersion than it should have and clients could reject the source when its distance reached the maximum synchronization distance (1.5 seconds by default). Calculation of root dispersion has been fixed, the root dispersion is now reported correctly, and clients no longer reject the server due to a large synchronization distance. (BZ#1045376) * The ntpd daemon dropped incoming NTP packets if their source port was lower than 123 (the NTP port). Clients behind Network Address Translation (NAT) were unable to synchronize with the server if their source port was translated to ports below 123. With this update, ntpd no longer checks the source port number. (BZ#1171630) Enhancements: * This update introduces configurable access of memory segments used for Shared Memory Driver (SHM) reference clocks. Previously, only the first two memory segments were created with owner-only access, allowing just two SHM reference clocks to be used securely on a system. Now, the owner-only access to SHM is configurable with the "mode" option, and it is therefore possible to use more SHM reference clocks securely. (BZ#1122015) * Support for nanosecond resolution has been added to the SHM reference clock. Prior to this update, when a Precision Time Protocol (PTP) hardware clock was used as a time source to synchronize the system clock (for example, with the timemaster service from the linuxptp package), the accuracy of the synchronization was limited due to the microsecond resolution of the SHM protocol. The nanosecond extension in the SHM protocol now enables sub-microsecond synchronization of the system clock. (BZ#1117704) 4. Solution: All ntp users are advised to upgrade to these updated packages, which contain backported patches to correct these issues and add these enhancements. After installing the update, the ntpd daemon will restart automatically. Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 995134 - ntp package doesn't build with net-snmp-devel 1045376 - Fix root distance and root dispersion calculations. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: ntp-4.2.6p5-5.el6.src.rpm i386: ntp-4.2.6p5-5.el6.i686.rpm ntp-debuginfo-4.2.6p5-5.el6.i686.rpm ntpdate-4.2.6p5-5.el6.i686.rpm x86_64: ntp-4.2.6p5-5.el6.x86_64.rpm ntp-debuginfo-4.2.6p5-5.el6.x86_64.rpm ntpdate-4.2.6p5-5.el6.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): i386: ntp-debuginfo-4.2.6p5-5.el6.i686.rpm ntp-perl-4.2.6p5-5.el6.i686.rpm noarch: ntp-doc-4.2.6p5-5.el6.noarch.rpm x86_64: ntp-debuginfo-4.2.6p5-5.el6.x86_64.rpm ntp-perl-4.2.6p5-5.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: ntp-4.2.6p5-5.el6.src.rpm x86_64: ntp-4.2.6p5-5.el6.x86_64.rpm ntp-debuginfo-4.2.6p5-5.el6.x86_64.rpm ntpdate-4.2.6p5-5.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): noarch: ntp-doc-4.2.6p5-5.el6.noarch.rpm x86_64: ntp-debuginfo-4.2.6p5-5.el6.x86_64.rpm ntp-perl-4.2.6p5-5.el6.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: ntp-4.2.6p5-5.el6.src.rpm i386: ntp-4.2.6p5-5.el6.i686.rpm ntp-debuginfo-4.2.6p5-5.el6.i686.rpm ntpdate-4.2.6p5-5.el6.i686.rpm ppc64: ntp-4.2.6p5-5.el6.ppc64.rpm ntp-debuginfo-4.2.6p5-5.el6.ppc64.rpm ntpdate-4.2.6p5-5.el6.ppc64.rpm s390x: ntp-4.2.6p5-5.el6.s390x.rpm ntp-debuginfo-4.2.6p5-5.el6.s390x.rpm ntpdate-4.2.6p5-5.el6.s390x.rpm x86_64: ntp-4.2.6p5-5.el6.x86_64.rpm ntp-debuginfo-4.2.6p5-5.el6.x86_64.rpm ntpdate-4.2.6p5-5.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): i386: ntp-debuginfo-4.2.6p5-5.el6.i686.rpm ntp-perl-4.2.6p5-5.el6.i686.rpm noarch: ntp-doc-4.2.6p5-5.el6.noarch.rpm ppc64: ntp-debuginfo-4.2.6p5-5.el6.ppc64.rpm ntp-perl-4.2.6p5-5.el6.ppc64.rpm s390x: ntp-debuginfo-4.2.6p5-5.el6.s390x.rpm ntp-perl-4.2.6p5-5.el6.s390x.rpm x86_64: ntp-debuginfo-4.2.6p5-5.el6.x86_64.rpm ntp-perl-4.2.6p5-5.el6.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: ntp-4.2.6p5-5.el6.src.rpm i386: ntp-4.2.6p5-5.el6.i686.rpm ntp-debuginfo-4.2.6p5-5.el6.i686.rpm ntpdate-4.2.6p5-5.el6.i686.rpm x86_64: ntp-4.2.6p5-5.el6.x86_64.rpm ntp-debuginfo-4.2.6p5-5.el6.x86_64.rpm ntpdate-4.2.6p5-5.el6.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): i386: ntp-debuginfo-4.2.6p5-5.el6.i686.rpm ntp-perl-4.2.6p5-5.el6.i686.rpm noarch: ntp-doc-4.2.6p5-5.el6.noarch.rpm x86_64: ntp-debuginfo-4.2.6p5-5.el6.x86_64.rpm ntp-perl-4.2.6p5-5.el6.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2014-9297 https://access.redhat.com/security/cve/CVE-2014-9298 https://access.redhat.com/security/cve/CVE-2015-1798 https://access.redhat.com/security/cve/CVE-2015-1799 https://access.redhat.com/security/cve/CVE-2015-3405 https://access.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2015 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFVrzhmXlSAg2UNWIIRAm99AJ48H4E3oVeZOC1QZtZHqK2Kqtyz4QCfQQtv N7izaJnwt/eplpxx4DE0HoY= =6lW5 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

network

TYPE

spoof

CONFIGURATIONS

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Miroslav Lichv&amp;amp;amp;amp;amp;aacute;r of Red Hat

SOURCES

LAST UPDATE DATE

2025-09-28T20:12:31.644000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE