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[IT-SecNots] [SECURITY] [DSA 3629-1] ntp security update


Chronologisch Thread 
  • From: Moritz Muehlenhoff <jmm AT debian.org>
  • To: debian-security-announce AT lists.debian.org
  • Subject: [IT-SecNots] [SECURITY] [DSA 3629-1] ntp security update
  • Date: Mon, 25 Jul 2016 23:15:32 +0200
  • List-archive: https://lists.debian.org/msgid-search/20160725211532.GA31300 AT pisco.westfalen.local
  • List-id: <debian-security-announce.lists.debian.org>
  • List-url: <http://lists.debian.org/debian-security-announce/>
  • Old-return-path: <jmm AT inutil.org>
  • Priority: urgent
  • Resent-date: Mon, 25 Jul 2016 21:16:04 +0000 (UTC)
  • Resent-from: debian-security-announce AT lists.debian.org
  • Resent-message-id: <6i-j-8XlcPO.A.irF.UGolXB@bendel>
  • Resent-sender: debian-security-announce-request AT lists.debian.org

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- -------------------------------------------------------------------------
Debian Security Advisory DSA-3629-1 security AT debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
July 25, 2016 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : ntp
CVE ID : CVE-2015-7974 CVE-2015-7977 CVE-2015-7978 CVE-2015-7979
CVE-2015-8138 CVE-2015-8158 CVE-2016-1547 CVE-2016-1548
CVE-2016-1550 CVE-2016-2516 CVE-2016-2518

Several vulnerabilities were discovered in the Network Time Protocol
daemon and utility programs:

CVE-2015-7974

Matt Street discovered that insufficient key validation allows
impersonation attacks between authenticated peers.

CVE-2015-7977 / CVE-2015-7978

Stephen Gray discovered that a NULL pointer dereference and a
buffer overflow in the handling of "ntpdc reslist" commands may
result in denial of service.

CVE-2015-7979

Aanchal Malhotra discovered that if NTP is configured for broadcast
mode, an attacker can send malformed authentication packets which
break associations with the server for other broadcast clients.

CVE-2015-8138

Matthew van Gundy and Jonathan Gardner discovered that missing
validation of origin timestamps in ntpd clients may result in denial
of service.

CVE-2015-8158

Jonathan Gardner discovered that missing input sanitising in ntpq
may result in denial of service.

CVE-2016-1547

Stephen Gray and Matthew van Gundy discovered that incorrect handling
of crypto NAK packets my result in denial of service.

CVE-2016-1548

Jonathan Gardner and Miroslav Lichvar discovered that ntpd clients
could be forced to change from basic client/server mode to interleaved
symmetric mode, preventing time synchronisation.

CVE-2016-1550

Matthew van Gundy, Stephen Gray and Loganaden Velvindron discovered
that timing leaks in the the packet authentication code could result
in recovery of a message digest.

CVE-2016-2516

Yihan Lian discovered that duplicate IPs on "unconfig" directives will
trigger an assert.

CVE-2016-2518

Yihan Lian discovered that an OOB memory access could potentially
crash ntpd.

For the stable distribution (jessie), these problems have been fixed in
version 1:4.2.6.p5+dfsg-7+deb8u2.

For the testing distribution (stretch), these problems have been fixed
in version 1:4.2.8p7+dfsg-1.

For the unstable distribution (sid), these problems have been fixed in
version 1:4.2.8p7+dfsg-1.

We recommend that you upgrade your ntp packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce AT lists.debian.org
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  • [IT-SecNots] [SECURITY] [DSA 3629-1] ntp security update, Moritz Muehlenhoff, 25.07.2016

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