VAR-201504-0361
Vulnerability from variot - Updated: 2025-12-22 23:15The 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. NTP Project ntpd reference implementation accepts unauthenticated packets with symmetric key cryptography and does not protect symmetric associations against denial of service attacks. 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 MAC The packet may be spoofed by being deleted. Successful exploits may allow the attacker to cause a denial-of-service condition. NTP is prone to a security-bypass vulnerability. Successfully exploiting this issue may allow attackers to obtain sensitive information by conducting a man-in-the-middle attack. This may lead to other attacks.
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
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The updated packages provides a solution for these security issues.
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. 7) - noarch, x86_64
-
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. This could allow a remote attacker to cause a denial of service by impeding synchronization between NTP peers.
Additionally, it was discovered that generating MD5 keys using ntp-keygen on big endian machines would either trigger an endless loop, or generate non-random keys.
For the stable distribution (wheezy), these problems have been fixed in version 1:4.2.6.p5+dfsg-2+deb7u4.
For the unstable distribution (sid), these problems have been fixed in version 1:4.2.6.p5+dfsg-7.
We recommend that you upgrade your ntp packages. -----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 =====================================================================
- 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.
- 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
- 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. 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)
-
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
- 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/
- 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
- 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
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-- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce
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"data": "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. NTP Project ntpd reference implementation accepts unauthenticated packets with symmetric key cryptography and does not protect symmetric associations against denial of service attacks. 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 MAC The packet may be spoofed by being deleted. \nSuccessful exploits may allow the attacker to cause a denial-of-service condition. NTP is prone to a security-bypass vulnerability. \nSuccessfully exploiting this issue may allow attackers to obtain sensitive information by conducting a man-in-the-middle attack. This may lead to other attacks. \n\n\nHere are the details from the Slackware 14.1 ChangeLog:\n+--------------------------+\npatches/packages/ntp-4.2.8p2-i486-1_slack14.1.txz: Upgraded. \n For more information, see:\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1798\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1799\n (* Security fix *)\n+--------------------------+\n\n\nWhere to find the new packages:\n+-----------------------------+\n\nThanks to the friendly folks at the OSU Open Source Lab\n(http://osuosl.org) for donating FTP and rsync hosting\nto the Slackware project! :-)\n\nAlso see the \"Get Slack\" section on http://slackware.com for\nadditional mirror sites near you. \n\nUpdated package for Slackware 13.0:\nftp://ftp.slackware.com/pub/slackware/slackware-13.0/patches/packages/ntp-4.2.8p2-i486-1_slack13.0.txz\n\nUpdated package for Slackware x86_64 13.0:\nftp://ftp.slackware.com/pub/slackware/slackware64-13.0/patches/packages/ntp-4.2.8p2-x86_64-1_slack13.0.txz\n\nUpdated package for Slackware 13.1:\nftp://ftp.slackware.com/pub/slackware/slackware-13.1/patches/packages/ntp-4.2.8p2-i486-1_slack13.1.txz\n\nUpdated package for Slackware x86_64 13.1:\nftp://ftp.slackware.com/pub/slackware/slackware64-13.1/patches/packages/ntp-4.2.8p2-x86_64-1_slack13.1.txz\n\nUpdated package for Slackware 13.37:\nftp://ftp.slackware.com/pub/slackware/slackware-13.37/patches/packages/ntp-4.2.8p2-i486-1_slack13.37.txz\n\nUpdated package for Slackware x86_64 13.37:\nftp://ftp.slackware.com/pub/slackware/slackware64-13.37/patches/packages/ntp-4.2.8p2-x86_64-1_slack13.37.txz\n\nUpdated package for Slackware 14.0:\nftp://ftp.slackware.com/pub/slackware/slackware-14.0/patches/packages/ntp-4.2.8p2-i486-1_slack14.0.txz\n\nUpdated package for Slackware x86_64 14.0:\nftp://ftp.slackware.com/pub/slackware/slackware64-14.0/patches/packages/ntp-4.2.8p2-x86_64-1_slack14.0.txz\n\nUpdated package for Slackware 14.1:\nftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/ntp-4.2.8p2-i486-1_slack14.1.txz\n\nUpdated package for Slackware x86_64 14.1:\nftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/ntp-4.2.8p2-x86_64-1_slack14.1.txz\n\nUpdated package for Slackware -current:\nftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/ntp-4.2.8p2-i486-1.txz\n\nUpdated package for Slackware x86_64 -current:\nftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/ntp-4.2.8p2-x86_64-1.txz\n\n\nMD5 signatures:\n+-------------+\n\nSlackware 13.0 package:\n570bb3e4bb7b065101fa4963e757d7e7 ntp-4.2.8p2-i486-1_slack13.0.txz\n\nSlackware x86_64 13.0 package:\ne6add42a70a66496be2d4978370c2799 ntp-4.2.8p2-x86_64-1_slack13.0.txz\n\nSlackware 13.1 package:\n99f1cfa5e23a256d840ed0a56b7f9400 ntp-4.2.8p2-i486-1_slack13.1.txz\n\nSlackware x86_64 13.1 package:\n0a6622196521e084d36cda13fc6da824 ntp-4.2.8p2-x86_64-1_slack13.1.txz\n\nSlackware 13.37 package:\n28cfe042c585cf036582ce5f0c2daadf ntp-4.2.8p2-i486-1_slack13.37.txz\n\nSlackware x86_64 13.37 package:\nc436da55cd2d113142410a9d982c5ac5 ntp-4.2.8p2-x86_64-1_slack13.37.txz\n\nSlackware 14.0 package:\ncf69f8ecb5e4c1902dfb22d0f9685278 ntp-4.2.8p2-i486-1_slack14.0.txz\n\nSlackware x86_64 14.0 package:\n9c8344ec56d5d2335fd7370e2f9cf639 ntp-4.2.8p2-x86_64-1_slack14.0.txz\n\nSlackware 14.1 package:\n9dcf0eafa851ad018f8341c2fb9307b5 ntp-4.2.8p2-i486-1_slack14.1.txz\n\nSlackware x86_64 14.1 package:\ne0c063f4e46a72ec86012a46299a46df ntp-4.2.8p2-x86_64-1_slack14.1.txz\n\nSlackware -current package:\n5f72de16e3bb6cd216e7694a49671cee n/ntp-4.2.8p2-i486-1.txz\n\nSlackware x86_64 -current package:\n1ba531770e4a2ae6e8e7116aaa26523e n/ntp-4.2.8p2-x86_64-1.txz\n\n\nInstallation instructions:\n+------------------------+\n\nUpgrade the package as root:\n# upgradepkg ntp-4.2.8p2-i486-1_slack14.1.txz\n\nThen, restart the NTP daemon:\n\n# sh /etc/rc.d/rc.ntpd restart\n\n\n+-----+\n\nSlackware Linux Security Team\nhttp://slackware.com/gpg-key\nsecurity@slackware.com\n\n+------------------------------------------------------------------------+\n| To leave the slackware-security mailing list: |\n+------------------------------------------------------------------------+\n| Send an email to majordomo@slackware.com with this text in the body of |\n| the email message: |\n| |\n| unsubscribe slackware-security |\n| |\n| You will get a confirmation message back containing instructions to |\n| complete the process. Please do not reply to this email address. \n \n The updated packages provides a solution for these security issues. \n _______________________________________________________________________\n\n References:\n\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1798\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1799\n http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities\n _______________________________________________________________________\n\n Updated Packages:\n\n Mandriva Business Server 1/X86_64:\n b0f98e6b8700e3e3413582fe28d1ba06 mbs1/x86_64/ntp-4.2.6p5-8.4.mbs1.x86_64.rpm\n d864780718c95368bf9ec81643e35e5d mbs1/x86_64/ntp-client-4.2.6p5-8.4.mbs1.x86_64.rpm\n 6f457df52d46fb8e6b0fe44aead752eb mbs1/x86_64/ntp-doc-4.2.6p5-8.4.mbs1.x86_64.rpm \n b4bff3de733ea6d2839a77a9211ce02b mbs1/SRPMS/ntp-4.2.6p5-8.4.mbs1.src.rpm\n\n Mandriva Business Server 2/X86_64:\n e9ac2f3465bcc50199aef8a4d553927f mbs2/x86_64/ntp-4.2.6p5-16.3.mbs2.x86_64.rpm\n cf2970c3c56efbfa84f964532ad64544 mbs2/x86_64/ntp-client-4.2.6p5-16.3.mbs2.x86_64.rpm\n 1ae1b1d3c2e7bdea25c01c33652b6169 mbs2/x86_64/ntp-doc-4.2.6p5-16.3.mbs2.noarch.rpm \n d250433009fd187361bda6338dc5eede mbs2/SRPMS/ntp-4.2.6p5-16.3.mbs2.src.rpm\n _______________________________________________________________________\n\n To upgrade automatically use MandrivaUpdate or urpmi. The verification\n of md5 checksums and GPG signatures is performed automatically for you. 7) - noarch, x86_64\n\n3. These packages include the ntpd\nservice which continuously adjusts system time and utilities used to query\nand configure the ntpd service. (BZ#1191111)\n\n* The ntpd service could previously join multicast groups only when\nstarting, which caused problems if ntpd was started during system boot\nbefore network was configured. With this update, ntpd attempts to join\nmulticast groups every time network configuration is changed. (BZ#1171640)\n\nEnhancements:\n\n* This update adds support for configurable Differentiated Services Code\nPoints (DSCP) in NTP packets, simplifying configuration in large networks\nwhere different NTP implementations or versions are using different DSCP\nvalues. (BZ#1202828)\n\n* This update adds the ability to configure separate clock stepping\nthresholds for each direction (backward and forward). Use the \"stepback\"\nand \"stepfwd\" options to configure each threshold. This could allow a remote\n attacker to cause a denial of service by impeding synchronization\n between NTP peers. \n\nAdditionally, it was discovered that generating MD5 keys using ntp-keygen\non big endian machines would either trigger an endless loop, or generate\nnon-random keys. \n\nFor the stable distribution (wheezy), these problems have been fixed in\nversion 1:4.2.6.p5+dfsg-2+deb7u4. \n\nFor the unstable distribution (sid), these problems have been fixed in\nversion 1:4.2.6.p5+dfsg-7. \n\nWe recommend that you upgrade your ntp packages. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA1\n\n=====================================================================\n Red Hat Security Advisory\n\nSynopsis: Moderate: ntp security, bug fix, and enhancement update\nAdvisory ID: RHSA-2015:1459-01\nProduct: Red Hat Enterprise Linux\nAdvisory URL: https://rhn.redhat.com/errata/RHSA-2015-1459.html\nIssue date: 2015-07-22\nUpdated on: 2015-02-25\nCVE Names: CVE-2014-9297 CVE-2014-9298 CVE-2015-1798 \n CVE-2015-1799 CVE-2015-3405 \n=====================================================================\n\n1. Summary:\n\nUpdated ntp packages that fix multiple security issues, several bugs, and\nadd two enhancements are now available for Red Hat Enterprise Linux 6. \n\nRed Hat Product Security has rated this update as having Moderate security\nimpact. Common Vulnerability Scoring System (CVSS) base scores, which give\ndetailed severity ratings, are available for each vulnerability from the\nCVE links in the References section. \n\n2. Relevant releases/architectures:\n\nRed Hat Enterprise Linux Desktop (v. 6) - i386, x86_64\nRed Hat Enterprise Linux Desktop Optional (v. 6) - i386, noarch, x86_64\nRed Hat Enterprise Linux HPC Node (v. 6) - x86_64\nRed Hat Enterprise Linux HPC Node Optional (v. 6) - noarch, x86_64\nRed Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64\nRed Hat Enterprise Linux Server Optional (v. 6) - i386, noarch, ppc64, s390x, x86_64\nRed Hat Enterprise Linux Workstation (v. 6) - i386, x86_64\nRed Hat Enterprise Linux Workstation Optional (v. 6) - i386, noarch, x86_64\n\n3. Description:\n\nThe Network Time Protocol (NTP) is used to synchronize a computer\u0027s time\nwith another referenced time source. \n\nIt was found that because NTP\u0027s access control was based on a source IP\naddress, an attacker could bypass source IP restrictions and send malicious\ncontrol and configuration packets by spoofing ::1 addresses. \n(CVE-2014-9298)\n\nA denial of service flaw was found in the way NTP hosts that were peering\nwith each other authenticated themselves before updating their internal\nstate variables. An attacker could send packets to one peer host, which\ncould cascade to other peers, and stop the synchronization process among\nthe reached peers. (CVE-2015-1799)\n\nA flaw was found in the way the ntp-keygen utility generated MD5 symmetric\nkeys on big-endian systems. An attacker could possibly use this flaw to\nguess generated MD5 keys, which could then be used to spoof an NTP client\nor server. (CVE-2015-3405)\n\nA stack-based buffer overflow was found in the way the NTP autokey protocol\nwas implemented. When an NTP client decrypted a secret received from an NTP\nserver, it could cause that client to crash. A man-in-the-middle attacker could use this\nflaw to send crafted packets that would be accepted by a client or a peer\nwithout the attacker knowing the symmetric key. (CVE-2015-1798)\n\nThe CVE-2015-1798 and CVE-2015-1799 issues were discovered by Miroslav\nLichv\u00e1r of Red Hat. \n\nBug fixes:\n\n* The ntpd daemon truncated symmetric keys specified in the key file to 20\nbytes. As a consequence, it was impossible to configure NTP authentication\nto work with peers that use longer keys. The maximum length of keys has now\nbeen changed to 32 bytes. (BZ#1053551)\n\n* The ntp-keygen utility used the exponent of 3 when generating RSA keys,\nand generating RSA keys failed when FIPS mode was enabled. ntp-keygen has\nbeen modified to use the exponent of 65537, and generating keys in FIPS\nmode now works as expected. (BZ#1184421)\n\n* The ntpd daemon included a root delay when calculating its root\ndispersion. Consequently, the NTP server reported larger root dispersion\nthan it should have and clients could reject the source when its distance\nreached the maximum synchronization distance (1.5 seconds by default). \nCalculation of root dispersion has been fixed, the root dispersion is now\nreported correctly, and clients no longer reject the server due to a large\nsynchronization distance. (BZ#1045376)\n\n* The ntpd daemon dropped incoming NTP packets if their source port was\nlower than 123 (the NTP port). Clients behind Network Address Translation\n(NAT) were unable to synchronize with the server if their source port was\ntranslated to ports below 123. With this update, ntpd no longer checks the\nsource port number. (BZ#1171630)\n\nEnhancements:\n\n* This update introduces configurable access of memory segments used for\nShared Memory Driver (SHM) reference clocks. Previously, only the first two\nmemory segments were created with owner-only access, allowing just two SHM\nreference clocks to be used securely on a system. Now, the owner-only\naccess to SHM is configurable with the \"mode\" option, and it is therefore\npossible to use more SHM reference clocks securely. (BZ#1122015)\n\n* Support for nanosecond resolution has been added to the SHM reference\nclock. Prior to this update, when a Precision Time Protocol (PTP) hardware\nclock was used as a time source to synchronize the system clock (for\nexample, with the timemaster service from the linuxptp package), the\naccuracy of the synchronization was limited due to the microsecond\nresolution of the SHM protocol. The nanosecond extension in the SHM\nprotocol now enables sub-microsecond synchronization of the system clock. \n(BZ#1117704)\n\n4. Solution:\n\nAll ntp users are advised to upgrade to these updated packages, which\ncontain backported patches to correct these issues and add these\nenhancements. After installing the update, the ntpd daemon will\nrestart automatically. \n\nBefore applying this update, make sure all previously released errata\nrelevant to your system have been applied. \n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258\n\n5. Bugs fixed (https://bugzilla.redhat.com/):\n\n995134 - ntp package doesn\u0027t build with net-snmp-devel\n1045376 - Fix root distance and root dispersion calculations. Package List:\n\nRed Hat Enterprise Linux Desktop (v. 6):\n\nSource:\nntp-4.2.6p5-5.el6.src.rpm\n\ni386:\nntp-4.2.6p5-5.el6.i686.rpm\nntp-debuginfo-4.2.6p5-5.el6.i686.rpm\nntpdate-4.2.6p5-5.el6.i686.rpm\n\nx86_64:\nntp-4.2.6p5-5.el6.x86_64.rpm\nntp-debuginfo-4.2.6p5-5.el6.x86_64.rpm\nntpdate-4.2.6p5-5.el6.x86_64.rpm\n\nRed Hat Enterprise Linux Desktop Optional (v. 6):\n\ni386:\nntp-debuginfo-4.2.6p5-5.el6.i686.rpm\nntp-perl-4.2.6p5-5.el6.i686.rpm\n\nnoarch:\nntp-doc-4.2.6p5-5.el6.noarch.rpm\n\nx86_64:\nntp-debuginfo-4.2.6p5-5.el6.x86_64.rpm\nntp-perl-4.2.6p5-5.el6.x86_64.rpm\n\nRed Hat Enterprise Linux HPC Node (v. 6):\n\nSource:\nntp-4.2.6p5-5.el6.src.rpm\n\nx86_64:\nntp-4.2.6p5-5.el6.x86_64.rpm\nntp-debuginfo-4.2.6p5-5.el6.x86_64.rpm\nntpdate-4.2.6p5-5.el6.x86_64.rpm\n\nRed Hat Enterprise Linux HPC Node Optional (v. 6):\n\nnoarch:\nntp-doc-4.2.6p5-5.el6.noarch.rpm\n\nx86_64:\nntp-debuginfo-4.2.6p5-5.el6.x86_64.rpm\nntp-perl-4.2.6p5-5.el6.x86_64.rpm\n\nRed Hat Enterprise Linux Server (v. 6):\n\nSource:\nntp-4.2.6p5-5.el6.src.rpm\n\ni386:\nntp-4.2.6p5-5.el6.i686.rpm\nntp-debuginfo-4.2.6p5-5.el6.i686.rpm\nntpdate-4.2.6p5-5.el6.i686.rpm\n\nppc64:\nntp-4.2.6p5-5.el6.ppc64.rpm\nntp-debuginfo-4.2.6p5-5.el6.ppc64.rpm\nntpdate-4.2.6p5-5.el6.ppc64.rpm\n\ns390x:\nntp-4.2.6p5-5.el6.s390x.rpm\nntp-debuginfo-4.2.6p5-5.el6.s390x.rpm\nntpdate-4.2.6p5-5.el6.s390x.rpm\n\nx86_64:\nntp-4.2.6p5-5.el6.x86_64.rpm\nntp-debuginfo-4.2.6p5-5.el6.x86_64.rpm\nntpdate-4.2.6p5-5.el6.x86_64.rpm\n\nRed Hat Enterprise Linux Server Optional (v. 6):\n\ni386:\nntp-debuginfo-4.2.6p5-5.el6.i686.rpm\nntp-perl-4.2.6p5-5.el6.i686.rpm\n\nnoarch:\nntp-doc-4.2.6p5-5.el6.noarch.rpm\n\nppc64:\nntp-debuginfo-4.2.6p5-5.el6.ppc64.rpm\nntp-perl-4.2.6p5-5.el6.ppc64.rpm\n\ns390x:\nntp-debuginfo-4.2.6p5-5.el6.s390x.rpm\nntp-perl-4.2.6p5-5.el6.s390x.rpm\n\nx86_64:\nntp-debuginfo-4.2.6p5-5.el6.x86_64.rpm\nntp-perl-4.2.6p5-5.el6.x86_64.rpm\n\nRed Hat Enterprise Linux Workstation (v. 6):\n\nSource:\nntp-4.2.6p5-5.el6.src.rpm\n\ni386:\nntp-4.2.6p5-5.el6.i686.rpm\nntp-debuginfo-4.2.6p5-5.el6.i686.rpm\nntpdate-4.2.6p5-5.el6.i686.rpm\n\nx86_64:\nntp-4.2.6p5-5.el6.x86_64.rpm\nntp-debuginfo-4.2.6p5-5.el6.x86_64.rpm\nntpdate-4.2.6p5-5.el6.x86_64.rpm\n\nRed Hat Enterprise Linux Workstation Optional (v. 6):\n\ni386:\nntp-debuginfo-4.2.6p5-5.el6.i686.rpm\nntp-perl-4.2.6p5-5.el6.i686.rpm\n\nnoarch:\nntp-doc-4.2.6p5-5.el6.noarch.rpm\n\nx86_64:\nntp-debuginfo-4.2.6p5-5.el6.x86_64.rpm\nntp-perl-4.2.6p5-5.el6.x86_64.rpm\n\nThese packages are GPG signed by Red Hat for security. Our key and\ndetails on how to verify the signature are available from\nhttps://access.redhat.com/security/team/key/\n\n7. References:\n\nhttps://access.redhat.com/security/cve/CVE-2014-9297\nhttps://access.redhat.com/security/cve/CVE-2014-9298\nhttps://access.redhat.com/security/cve/CVE-2015-1798\nhttps://access.redhat.com/security/cve/CVE-2015-1799\nhttps://access.redhat.com/security/cve/CVE-2015-3405\nhttps://access.redhat.com/security/updates/classification/#moderate\n\n8. Contact:\n\nThe Red Hat security contact is \u003csecalert@redhat.com\u003e. More contact\ndetails at https://access.redhat.com/security/team/contact/\n\nCopyright 2015 Red Hat, Inc. \n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1\n\niD8DBQFVrzhmXlSAg2UNWIIRAm99AJ48H4E3oVeZOC1QZtZHqK2Kqtyz4QCfQQtv\nN7izaJnwt/eplpxx4DE0HoY=\n=6lW5\n-----END PGP SIGNATURE-----\n\n\n--\nRHSA-announce mailing list\nRHSA-announce@redhat.com\nhttps://www.redhat.com/mailman/listinfo/rhsa-announce",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.