ID

VAR-201803-1837

CVE

CVE-2018-7170

TITLE

ntp Data processing vulnerability

DESCRIPTION

ntpd in ntp 4.2.x before 4.2.8p7 and 4.3.x before 4.3.92 allows authenticated users that know the private symmetric key to create arbitrarily-many ephemeral associations in order to win the clock selection of ntpd and modify a victim's clock via a Sybil attack. This issue exists because of an incomplete fix for CVE-2016-1549. ntp Contains data processing vulnerabilities and key management errors. NTP is prone to a remote security vulnerability. Successful exploits will allow attackers to bypass certain security restrictions and perform some unauthorized actions to the application. This may aid in further attacks. Versions prior to NTP 4.2.8p7 and 4.3.x versions prior to 4.3.92 are vulnerable. ntpd is one of the operating system daemons. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201805-12 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: NTP: Multiple vulnerabilities Date: May 26, 2018 Bugs: #649612 ID: 201805-12 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities have been found in NTP, the worst of which could lead to remote code execution. Background ========== NTP contains software for the Network Time Protocol. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/ntp < 4.2.8_p11 >= 4.2.8_p11 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 or cause a Denial of Service condition. Workaround ========== There is no known workaround at this time. Resolution ========== All NTP users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/ntp-4.2.8_p11" References ========== [ 1 ] CVE-2018-7170 https://nvd.nist.gov/vuln/detail/CVE-2018-7170 [ 2 ] CVE-2018-7182 https://nvd.nist.gov/vuln/detail/CVE-2018-7182 [ 3 ] CVE-2018-7183 https://nvd.nist.gov/vuln/detail/CVE-2018-7183 [ 4 ] CVE-2018-7184 https://nvd.nist.gov/vuln/detail/CVE-2018-7184 [ 5 ] CVE-2018-7185 https://nvd.nist.gov/vuln/detail/CVE-2018-7185 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201805-12 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 2018 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. https://creativecommons.org/licenses/by-sa/2.5 . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 [slackware-security] ntp (SSA:2018-060-02) New ntp packages are available for Slackware 14.0, 14.1, 14.2, and -current to fix security issues. Here are the details from the Slackware 14.2 ChangeLog: +--------------------------+ patches/packages/ntp-4.2.8p11-i586-1_slack14.2.txz: Upgraded. This release addresses five security issues in ntpd: * LOW/MEDIUM: Sec 3012 / CVE-2016-1549 / VU#961909: Sybil vulnerability: ephemeral association attack. While fixed in ntp-4.2.8p7, there are significant additional protections for this issue in 4.2.8p11. Reported by Matt Van Gundy of Cisco. * INFO/MEDIUM: Sec 3412 / CVE-2018-7182 / VU#961909: ctl_getitem(): buffer read overrun leads to undefined behavior and information leak. Reported by Yihan Lian of Qihoo 360. * LOW: Sec 3415 / CVE-2018-7170 / VU#961909: Multiple authenticated ephemeral associations. Reported on the questions@ list. * LOW: Sec 3453 / CVE-2018-7184 / VU#961909: Interleaved symmetric mode cannot recover from bad state. Reported by Miroslav Lichvar of Red Hat. * LOW/MEDIUM: Sec 3454 / CVE-2018-7185 / VU#961909: Unauthenticated packet can reset authenticated interleaved association. Reported by Miroslav Lichvar of Red Hat. For more information, see: http://support.ntp.org/bin/view/Main/SecurityNotice#February_2018_ntp_4_2_8p11_NTP_S https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1549 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7182 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7170 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7184 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7185 (* 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 14.0: ftp://ftp.slackware.com/pub/slackware/slackware-14.0/patches/packages/ntp-4.2.8p11-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-4.2.8p11-x86_64-1_slack14.0.txz Updated package for Slackware 14.1: ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/ntp-4.2.8p11-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-4.2.8p11-x86_64-1_slack14.1.txz Updated package for Slackware 14.2: ftp://ftp.slackware.com/pub/slackware/slackware-14.2/patches/packages/ntp-4.2.8p11-i586-1_slack14.2.txz Updated package for Slackware x86_64 14.2: ftp://ftp.slackware.com/pub/slackware/slackware64-14.2/patches/packages/ntp-4.2.8p11-x86_64-1_slack14.2.txz Updated package for Slackware -current: ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/ntp-4.2.8p11-i586-1.txz Updated package for Slackware x86_64 -current: ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/ntp-4.2.8p11-x86_64-1.txz MD5 signatures: +-------------+ Slackware 14.0 package: 01c86ddfabec68d52877336258d064c7 ntp-4.2.8p11-i486-1_slack14.0.txz Slackware x86_64 14.0 package: b2d36d96f9a4d84df3586d38b8b47389 ntp-4.2.8p11-x86_64-1_slack14.0.txz Slackware 14.1 package: 78b4e9221e725dcb45160950bfc926d0 ntp-4.2.8p11-i486-1_slack14.1.txz Slackware x86_64 14.1 package: e0d32ed484e02ad28c59838e6407d549 ntp-4.2.8p11-x86_64-1_slack14.1.txz Slackware 14.2 package: 81690d8e511b403f0fe89c1d120f5049 ntp-4.2.8p11-i586-1_slack14.2.txz Slackware x86_64 14.2 package: d2c877e3d1b9c7ce003ef090c7610c74 ntp-4.2.8p11-x86_64-1_slack14.2.txz Slackware -current package: c3ee95d3944b09c2e891883dc5411a6f n/ntp-4.2.8p11-i586-1.txz Slackware x86_64 -current package: fa9c7a8aca0c769791e34a8e48e6d260 n/ntp-4.2.8p11-x86_64-1.txz Installation instructions: +------------------------+ Upgrade the package as root: # upgradepkg ntp-4.2.8p11-i586-1_slack14.2.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. | +------------------------------------------------------------------------+ -----BEGIN PGP SIGNATURE----- iEYEARECAAYFAlqYjI8ACgkQakRjwEAQIjM5rACfdDAWRxL2nQATj8HFDPgCVInK 13MAnR04OluKfiEsJVgO6uWJKXy2HOGq =FRx7 -----END PGP SIGNATURE-----

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

encryption problem

CONFIGURATIONS

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Matthew Van Gundy of Cisco ASIG, and Stefan Moser.

SOURCES

LAST UPDATE DATE

2024-08-14T13:14:09.720000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE