var-201803-1821
Vulnerability from variot
ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the "received" timestamp, which allows remote attackers to cause a denial of service (disruption) by sending a packet with a zero-origin timestamp causing the association to reset and setting the contents of the packet as the most recent timestamp. This issue is a result of an incomplete fix for CVE-2015-7704. ntp Contains an input validation vulnerability.Service operation interruption (DoS) There is a possibility of being put into a state. NTP is prone to a denial-of-service vulnerability. An attacker can exploit this issue to cause a denial-of-service condition, denying service to legitimate users. Versions prior to NTP 4.2.8p11 are vulnerable. ntpd is one of the operating system daemons. ========================================================================== Ubuntu Security Notice USN-3707-1 July 09, 2018
ntp vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
- Ubuntu 17.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in NTP.
Software Description: - ntp: Network Time Protocol daemon and utility programs
Details:
Yihan Lian discovered that NTP incorrectly handled certain malformed mode 6 packets. This issue only affected Ubuntu 17.10 and Ubuntu 18.04 LTS. (CVE-2018-7182)
Michael Macnair discovered that NTP incorrectly handled certain responses. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2018-7183)
Miroslav Lichvar discovered that NTP incorrectly handled certain zero-origin timestamps. This issue only affected Ubuntu 17.10 and Ubuntu 18.04 LTS. (CVE-2018-7184)
Miroslav Lichvar discovered that NTP incorrectly handled certain zero-origin timestamps. (CVE-2018-7185)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 18.04 LTS: ntp 1:4.2.8p10+dfsg-5ubuntu7.1
Ubuntu 17.10: ntp 1:4.2.8p10+dfsg-5ubuntu3.3
Ubuntu 16.04 LTS: ntp 1:4.2.8p4+dfsg-3ubuntu5.9
Ubuntu 14.04 LTS: ntp 1:4.2.6.p5+dfsg-3ubuntu2.14.04.13
In general, a standard system update will make all the necessary changes.
References: https://usn.ubuntu.com/usn/usn-3707-1 CVE-2018-7182, CVE-2018-7183, CVE-2018-7184, CVE-2018-7185
Package Information: https://launchpad.net/ubuntu/+source/ntp/1:4.2.8p10+dfsg-5ubuntu7.1 https://launchpad.net/ubuntu/+source/ntp/1:4.2.8p10+dfsg-5ubuntu3.3 https://launchpad.net/ubuntu/+source/ntp/1:4.2.8p4+dfsg-3ubuntu5.9 https://launchpad.net/ubuntu/+source/ntp/1:4.2.6.p5+dfsg-3ubuntu2.14.04.13 . - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 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.
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.
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
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"data": "ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the \"received\" timestamp, which allows remote attackers to cause a denial of service (disruption) by sending a packet with a zero-origin timestamp causing the association to reset and setting the contents of the packet as the most recent timestamp. This issue is a result of an incomplete fix for CVE-2015-7704. ntp Contains an input validation vulnerability.Service operation interruption (DoS) There is a possibility of being put into a state. NTP is prone to a denial-of-service vulnerability. \nAn attacker can exploit this issue to cause a denial-of-service condition, denying service to legitimate users. \nVersions prior to NTP 4.2.8p11 are vulnerable. ntpd is one of the operating system daemons. ==========================================================================\nUbuntu Security Notice USN-3707-1\nJuly 09, 2018\n\nntp vulnerabilities\n==========================================================================\n\nA security issue affects these releases of Ubuntu and its derivatives:\n\n- Ubuntu 18.04 LTS\n- Ubuntu 17.10\n- Ubuntu 16.04 LTS\n- Ubuntu 14.04 LTS\n\nSummary:\n\nSeveral security issues were fixed in NTP. \n\nSoftware Description:\n- ntp: Network Time Protocol daemon and utility programs\n\nDetails:\n\nYihan Lian discovered that NTP incorrectly handled certain malformed mode 6\npackets. This issue only affected Ubuntu\n17.10 and Ubuntu 18.04 LTS. (CVE-2018-7182)\n\nMichael Macnair discovered that NTP incorrectly handled certain responses. \nA remote attacker could possibly use this issue to execute arbitrary code. \n(CVE-2018-7183)\n\nMiroslav Lichvar discovered that NTP incorrectly handled certain\nzero-origin timestamps. This issue only affected Ubuntu 17.10 and Ubuntu\n18.04 LTS. (CVE-2018-7184)\n\nMiroslav Lichvar discovered that NTP incorrectly handled certain\nzero-origin timestamps. (CVE-2018-7185)\n\nUpdate instructions:\n\nThe problem can be corrected by updating your system to the following\npackage versions:\n\nUbuntu 18.04 LTS:\n ntp 1:4.2.8p10+dfsg-5ubuntu7.1\n\nUbuntu 17.10:\n ntp 1:4.2.8p10+dfsg-5ubuntu3.3\n\nUbuntu 16.04 LTS:\n ntp 1:4.2.8p4+dfsg-3ubuntu5.9\n\nUbuntu 14.04 LTS:\n ntp 1:4.2.6.p5+dfsg-3ubuntu2.14.04.13\n\nIn general, a standard system update will make all the necessary changes. \n\nReferences:\n https://usn.ubuntu.com/usn/usn-3707-1\n CVE-2018-7182, CVE-2018-7183, CVE-2018-7184, CVE-2018-7185\n\nPackage Information:\n https://launchpad.net/ubuntu/+source/ntp/1:4.2.8p10+dfsg-5ubuntu7.1\n https://launchpad.net/ubuntu/+source/ntp/1:4.2.8p10+dfsg-5ubuntu3.3\n https://launchpad.net/ubuntu/+source/ntp/1:4.2.8p4+dfsg-3ubuntu5.9\n https://launchpad.net/ubuntu/+source/ntp/1:4.2.6.p5+dfsg-3ubuntu2.14.04.13\n. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\nGentoo Linux Security Advisory GLSA 201805-12\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n https://security.gentoo.org/\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n\n Severity: Normal\n Title: NTP: Multiple vulnerabilities\n Date: May 26, 2018\n Bugs: #649612\n ID: 201805-12\n\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n\nSynopsis\n========\n\nMultiple vulnerabilities have been found in NTP, the worst of which\ncould lead to remote code execution. \n\nAffected packages\n=================\n\n -------------------------------------------------------------------\n Package / Vulnerable / Unaffected\n -------------------------------------------------------------------\n 1 net-misc/ntp \u003c 4.2.8_p11 \u003e= 4.2.8_p11 \n\nDescription\n===========\n\nMultiple vulnerabilities have been discovered in NTP. Please review the\nCVE identifiers referenced below for details. \n\nWorkaround\n==========\n\nThere is no known workaround at this time. \n\nResolution\n==========\n\nAll NTP users should upgrade to the latest version:\n\n # emerge --sync\n # emerge --ask --oneshot --verbose \"\u003e=net-misc/ntp-4.2.8_p11\"\n\nReferences\n==========\n\n[ 1 ] CVE-2018-7170\n https://nvd.nist.gov/vuln/detail/CVE-2018-7170\n[ 2 ] CVE-2018-7182\n https://nvd.nist.gov/vuln/detail/CVE-2018-7182\n[ 3 ] CVE-2018-7183\n https://nvd.nist.gov/vuln/detail/CVE-2018-7183\n[ 4 ] CVE-2018-7184\n https://nvd.nist.gov/vuln/detail/CVE-2018-7184\n[ 5 ] CVE-2018-7185\n https://nvd.nist.gov/vuln/detail/CVE-2018-7185\n\nAvailability\n============\n\nThis GLSA and any updates to it are available for viewing at\nthe Gentoo Security Website:\n\n https://security.gentoo.org/glsa/201805-12\n\nConcerns?\n=========\n\nSecurity is a primary focus of Gentoo Linux and ensuring the\nconfidentiality and security of our users\u0027 machines is of utmost\nimportance to us. Any security concerns should be addressed to\nsecurity@gentoo.org or alternatively, you may file a bug at\nhttps://bugs.gentoo.org. \n\nLicense\n=======\n\nCopyright 2018 Gentoo Foundation, Inc; referenced text\nbelongs to its owner(s). \n\nThe contents of this document are licensed under the\nCreative Commons - Attribution / Share Alike license. \n\nhttps://creativecommons.org/licenses/by-sa/2.5\n. \n-----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA1\n\n[slackware-security] ntp (SSA:2018-060-02)\n\nNew ntp packages are available for Slackware 14.0, 14.1, 14.2, and -current to\nfix security issues. \n\n\nHere are the details from the Slackware 14.2 ChangeLog:\n+--------------------------+\npatches/packages/ntp-4.2.8p11-i586-1_slack14.2.txz: Upgraded. \n This release addresses five security issues in ntpd:\n * LOW/MEDIUM: Sec 3012 / CVE-2016-1549 / VU#961909: Sybil vulnerability:\n ephemeral association attack. While fixed in ntp-4.2.8p7, there are\n significant additional protections for this issue in 4.2.8p11. \n Reported by Matt Van Gundy of Cisco. \n * INFO/MEDIUM: Sec 3412 / CVE-2018-7182 / VU#961909: ctl_getitem(): buffer\n read overrun leads to undefined behavior and information leak. \n Reported by Yihan Lian of Qihoo 360. \n * LOW: Sec 3415 / CVE-2018-7170 / VU#961909: Multiple authenticated\n ephemeral associations. Reported on the questions@ list. \n * LOW: Sec 3453 / CVE-2018-7184 / VU#961909: Interleaved symmetric mode\n cannot recover from bad state. Reported by Miroslav Lichvar of Red Hat. \n * LOW/MEDIUM: Sec 3454 / CVE-2018-7185 / VU#961909: Unauthenticated packet\n can reset authenticated interleaved association. \n Reported by Miroslav Lichvar of Red Hat. \n For more information, see:\n http://support.ntp.org/bin/view/Main/SecurityNotice#February_2018_ntp_4_2_8p11_NTP_S\n https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1549\n https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7182\n https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7170\n https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7184\n https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7185\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 14.0:\nftp://ftp.slackware.com/pub/slackware/slackware-14.0/patches/packages/ntp-4.2.8p11-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-4.2.8p11-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-4.2.8p11-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-4.2.8p11-x86_64-1_slack14.1.txz\n\nUpdated package for Slackware 14.2:\nftp://ftp.slackware.com/pub/slackware/slackware-14.2/patches/packages/ntp-4.2.8p11-i586-1_slack14.2.txz\n\nUpdated package for Slackware x86_64 14.2:\nftp://ftp.slackware.com/pub/slackware/slackware64-14.2/patches/packages/ntp-4.2.8p11-x86_64-1_slack14.2.txz\n\nUpdated package for Slackware -current:\nftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/ntp-4.2.8p11-i586-1.txz\n\nUpdated package for Slackware x86_64 -current:\nftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/ntp-4.2.8p11-x86_64-1.txz\n\n\nMD5 signatures:\n+-------------+\n\nSlackware 14.0 package:\n01c86ddfabec68d52877336258d064c7 ntp-4.2.8p11-i486-1_slack14.0.txz\n\nSlackware x86_64 14.0 package:\nb2d36d96f9a4d84df3586d38b8b47389 ntp-4.2.8p11-x86_64-1_slack14.0.txz\n\nSlackware 14.1 package:\n78b4e9221e725dcb45160950bfc926d0 ntp-4.2.8p11-i486-1_slack14.1.txz\n\nSlackware x86_64 14.1 package:\ne0d32ed484e02ad28c59838e6407d549 ntp-4.2.8p11-x86_64-1_slack14.1.txz\n\nSlackware 14.2 package:\n81690d8e511b403f0fe89c1d120f5049 ntp-4.2.8p11-i586-1_slack14.2.txz\n\nSlackware x86_64 14.2 package:\nd2c877e3d1b9c7ce003ef090c7610c74 ntp-4.2.8p11-x86_64-1_slack14.2.txz\n\nSlackware -current package:\nc3ee95d3944b09c2e891883dc5411a6f n/ntp-4.2.8p11-i586-1.txz\n\nSlackware x86_64 -current package:\nfa9c7a8aca0c769791e34a8e48e6d260 n/ntp-4.2.8p11-x86_64-1.txz\n\n\nInstallation instructions:\n+------------------------+\n\nUpgrade the package as root:\n# upgradepkg ntp-4.2.8p11-i586-1_slack14.2.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. 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