var-201708-0212
Vulnerability from variot
The crypto_xmit function in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (crash). NOTE: This vulnerability exists due to an incomplete fix for CVE-2014-9750. 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. A remote attacker may exploit this issue to cause a denial-of-service condition, denying service to legitimate users. Due to the nature of this issue, code-injection may be possible; however this has not been confirmed. Versions prior to NTP 4.2.8p4 and 4.3.x prior to 4.3.77 are vulnerable. Note #2: This issue was previously titled 'NTP CVE-2015-7692 Denial of Service Vulnerability'. The title has been changed to better reflect the vulnerability information.
Gentoo Linux Security Advisory GLSA 201607-15
https://security.gentoo.org/
Severity: Normal Title: NTP: Multiple vulnerabilities Date: July 20, 2016 Bugs: #563774, #572452, #581528, #584954 ID: 201607-15
Synopsis
Multiple vulnerabilities have been found in NTP, the worst of which could lead to Denial of Service.
Affected packages
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/ntp < 4.2.8_p8 >= 4.2.8_p8
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_p8"
References
[ 1 ] CVE-2015-7691 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7691 [ 2 ] CVE-2015-7692 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7692 [ 3 ] CVE-2015-7701 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7701 [ 4 ] CVE-2015-7702 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7702 [ 5 ] CVE-2015-7703 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7703 [ 6 ] CVE-2015-7704 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7704 [ 7 ] CVE-2015-7705 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7705 [ 8 ] CVE-2015-7848 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7848 [ 9 ] CVE-2015-7849 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7849 [ 10 ] CVE-2015-7850 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7850 [ 11 ] CVE-2015-7851 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7851 [ 12 ] CVE-2015-7852 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7852 [ 13 ] CVE-2015-7853 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7853 [ 14 ] CVE-2015-7854 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7854 [ 15 ] CVE-2015-7855 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7855 [ 16 ] CVE-2015-7871 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7871 [ 17 ] CVE-2015-7973 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7973 [ 18 ] CVE-2015-7974 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7974 [ 19 ] CVE-2015-7975 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7975 [ 20 ] CVE-2015-7976 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7976 [ 21 ] CVE-2015-7977 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7977 [ 22 ] CVE-2015-7978 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7978 [ 23 ] CVE-2015-7979 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7979 [ 24 ] CVE-2015-8138 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8138 [ 25 ] CVE-2015-8139 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8139 [ 26 ] CVE-2015-8140 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8140 [ 27 ] CVE-2015-8158 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8158 [ 28 ] CVE-2016-1547 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1547 [ 29 ] CVE-2016-1548 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1548 [ 30 ] CVE-2016-1549 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1549 [ 31 ] CVE-2016-1550 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1550 [ 32 ] CVE-2016-1551 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1551 [ 33 ] CVE-2016-2516 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2516 [ 34 ] CVE-2016-2517 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2517 [ 35 ] CVE-2016-2518 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2518 [ 36 ] CVE-2016-2519 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2519 [ 37 ] CVE-2016-4953 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4953 [ 38 ] CVE-2016-4954 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4954 [ 39 ] CVE-2016-4955 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4955 [ 40 ] CVE-2016-4956 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4956 [ 41 ] CVE-2016-4957 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4957
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/201607-15
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 2016 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
. ============================================================================ Ubuntu Security Notice USN-2783-1 October 27, 2015
ntp vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 15.10
- Ubuntu 15.04
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary:
Several security issues were fixed in NTP. (CVE-2015-5146)
Miroslav Lichvar discovered that NTP incorrectly handled logconfig directives. (CVE-2015-5194)
Miroslav Lichvar discovered that NTP incorrectly handled certain statistics types. (CVE-2015-5195)
Miroslav Lichvar discovered that NTP incorrectly handled certain file paths. (CVE-2015-5196, CVE-2015-7703)
Miroslav Lichvar discovered that NTP incorrectly handled certain packets. (CVE-2015-5219)
Aanchal Malhotra, Isaac E. Cohen, and Sharon Goldberg discovered that NTP incorrectly handled restarting after hitting a panic threshold. (CVE-2015-5300)
It was discovered that NTP incorrectly handled autokey data packets. (CVE-2015-7701)
Aanchal Malhotra, Isaac E. Cohen, and Sharon Goldberg discovered that NTP incorrectly handled rate limiting. (CVE-2015-7704, CVE-2015-7705)
Yves Younan discovered that NTP incorrectly handled logfile and keyfile directives. (CVE-2015-7850)
Yves Younan and Aleksander Nikolich discovered that NTP incorrectly handled ascii conversion. (CVE-2015-7852)
Yves Younan discovered that NTP incorrectly handled reference clock memory. (CVE-2015-7853)
John D "Doug" Birdwell discovered that NTP incorrectly handled decoding certain bogus values. (CVE-2015-7871)
In the default installation, attackers would be isolated by the NTP AppArmor profile.
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 15.10: ntp 1:4.2.6.p5+dfsg-3ubuntu8.1
Ubuntu 15.04: ntp 1:4.2.6.p5+dfsg-3ubuntu6.2
Ubuntu 14.04 LTS: ntp 1:4.2.6.p5+dfsg-3ubuntu2.14.04.5
Ubuntu 12.04 LTS: ntp 1:4.2.6.p3+dfsg-1ubuntu3.6
In general, a standard system update will make all the necessary changes. 6) - i386, noarch, x86_64
On October 21st, 2015, NTP.org released a security advisory detailing 13 issues regarding multiple DoS vulnerabilities, information disclosure vulnerabilities, and logic issues that may result in an attacker gaining the ability to modify an NTP server's advertised time.
Workarounds that mitigate one or more of the vulnerabilities may be available for certain products, please see the individual Cisco Bug IDs for details. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
===================================================================== Red Hat Security Advisory
Synopsis: Moderate: ntp security and bug fix update Advisory ID: RHSA-2016:2583-02 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-2583.html Issue date: 2016-11-03 CVE Names: CVE-2015-5194 CVE-2015-5195 CVE-2015-5196 CVE-2015-5219 CVE-2015-7691 CVE-2015-7692 CVE-2015-7701 CVE-2015-7702 CVE-2015-7703 CVE-2015-7852 CVE-2015-7974 CVE-2015-7977 CVE-2015-7978 CVE-2015-7979 CVE-2015-8158 =====================================================================
- Summary:
An update for ntp is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
- Relevant releases/architectures:
Red Hat Enterprise Linux Client (v. 7) - x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64 Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - aarch64, noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch, x86_64
- Description:
The Network Time Protocol (NTP) is used to synchronize a computer's time with another referenced time source. These packages include the ntpd service which continuously adjusts system time and utilities used to query and configure the ntpd service.
Security Fix(es):
-
It was found that the fix for CVE-2014-9750 was incomplete: three issues were found in the value length checks in NTP's ntp_crypto.c, where a packet with particular autokey operations that contained malicious data was not always being completely validated. (CVE-2015-7691, CVE-2015-7692, CVE-2015-7702)
-
A memory leak flaw was found in ntpd's CRYPTO_ASSOC. If ntpd was configured to use autokey authentication, an attacker could send packets to ntpd that would, after several days of ongoing attack, cause it to run out of memory. (CVE-2015-7701)
-
An off-by-one flaw, leading to a buffer overflow, was found in cookedprint functionality of ntpq. (CVE-2015-7852)
-
A NULL pointer dereference flaw was found in the way ntpd processed 'ntpdc reslist' commands that queried restriction lists with a large amount of entries. (CVE-2015-7977)
-
A stack-based buffer overflow flaw was found in the way ntpd processed 'ntpdc reslist' commands that queried restriction lists with a large amount of entries. (CVE-2015-7978)
-
It was found that when NTP was configured in broadcast mode, a remote attacker could broadcast packets with bad authentication to all clients. The clients, upon receiving the malformed packets, would break the association with the broadcast server, causing them to become out of sync over a longer period of time. (CVE-2015-7979)
-
It was found that ntpd could crash due to an uninitialized variable when processing malformed logconfig configuration commands. (CVE-2015-5194)
-
It was found that ntpd would exit with a segmentation fault when a statistics type that was not enabled during compilation (e.g. timingstats) was referenced by the statistics or filegen configuration command. (CVE-2015-5195)
-
It was found that NTP's :config command could be used to set the pidfile and driftfile paths without any restrictions. A remote attacker could use this flaw to overwrite a file on the file system with a file containing the pid of the ntpd process (immediately) or the current estimated drift of the system clock (in hourly intervals). (CVE-2015-5196, CVE-2015-7703)
-
It was discovered that the sntp utility could become unresponsive due to being caught in an infinite loop when processing a crafted NTP packet. (CVE-2015-5219)
-
A flaw was found in the way NTP verified trusted keys during symmetric key authentication. An authenticated client (A) could use this flaw to modify a packet sent between a server (B) and a client (C) using a key that is different from the one known to the client (A). (CVE-2015-7974)
-
A flaw was found in the way the ntpq client processed certain incoming packets in a loop in the getresponse() function. A remote attacker could potentially use this flaw to crash an ntpq client instance. (CVE-2015-8158)
The CVE-2015-5219 and CVE-2015-7703 issues were discovered by Miroslav LichvA!r (Red Hat).
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.3 Release Notes linked from the References section.
- Solution:
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
After installing this update, the ntpd daemon will restart automatically.
- Bugs fixed (https://bugzilla.redhat.com/):
1242553 - ntpd doesn't reset system leap status when disarming leap timer 1254542 - CVE-2015-5194 ntp: crash with crafted logconfig configuration command 1254544 - CVE-2015-5195 ntp: ntpd crash when processing config commands with statistics type 1254547 - CVE-2015-7703 ntp: config command can be used to set the pidfile and drift file paths 1255118 - CVE-2015-5219 ntp: infinite loop in sntp processing crafted packet 1274254 - CVE-2015-7691 CVE-2015-7692 CVE-2015-7702 ntp: incomplete checks in ntp_crypto.c 1274255 - CVE-2015-7701 ntp: slow memory leak in CRYPTO_ASSOC 1274261 - CVE-2015-7852 ntp: ntpq atoascii memory corruption vulnerability 1297471 - CVE-2015-7974 ntp: missing key check allows impersonation between authenticated peers (VU#357792) 1300269 - CVE-2015-7977 ntp: restriction list NULL pointer dereference 1300270 - CVE-2015-7978 ntp: stack exhaustion in recursive traversal of restriction list 1300271 - CVE-2015-7979 ntp: off-path denial of service on authenticated broadcast mode 1300273 - CVE-2015-8158 ntp: potential infinite loop in ntpq
- Package List:
Red Hat Enterprise Linux Client (v. 7):
Source: ntp-4.2.6p5-25.el7.src.rpm
x86_64: ntp-4.2.6p5-25.el7.x86_64.rpm ntp-debuginfo-4.2.6p5-25.el7.x86_64.rpm ntpdate-4.2.6p5-25.el7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
noarch: ntp-doc-4.2.6p5-25.el7.noarch.rpm ntp-perl-4.2.6p5-25.el7.noarch.rpm
x86_64: ntp-debuginfo-4.2.6p5-25.el7.x86_64.rpm sntp-4.2.6p5-25.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: ntp-4.2.6p5-25.el7.src.rpm
x86_64: ntp-4.2.6p5-25.el7.x86_64.rpm ntp-debuginfo-4.2.6p5-25.el7.x86_64.rpm ntpdate-4.2.6p5-25.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
noarch: ntp-doc-4.2.6p5-25.el7.noarch.rpm ntp-perl-4.2.6p5-25.el7.noarch.rpm
x86_64: ntp-debuginfo-4.2.6p5-25.el7.x86_64.rpm sntp-4.2.6p5-25.el7.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: ntp-4.2.6p5-25.el7.src.rpm
aarch64: ntp-4.2.6p5-25.el7.aarch64.rpm ntp-debuginfo-4.2.6p5-25.el7.aarch64.rpm ntpdate-4.2.6p5-25.el7.aarch64.rpm
ppc64: ntp-4.2.6p5-25.el7.ppc64.rpm ntp-debuginfo-4.2.6p5-25.el7.ppc64.rpm ntpdate-4.2.6p5-25.el7.ppc64.rpm
ppc64le: ntp-4.2.6p5-25.el7.ppc64le.rpm ntp-debuginfo-4.2.6p5-25.el7.ppc64le.rpm ntpdate-4.2.6p5-25.el7.ppc64le.rpm
s390x: ntp-4.2.6p5-25.el7.s390x.rpm ntp-debuginfo-4.2.6p5-25.el7.s390x.rpm ntpdate-4.2.6p5-25.el7.s390x.rpm
x86_64: ntp-4.2.6p5-25.el7.x86_64.rpm ntp-debuginfo-4.2.6p5-25.el7.x86_64.rpm ntpdate-4.2.6p5-25.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
aarch64: ntp-debuginfo-4.2.6p5-25.el7.aarch64.rpm sntp-4.2.6p5-25.el7.aarch64.rpm
noarch: ntp-doc-4.2.6p5-25.el7.noarch.rpm ntp-perl-4.2.6p5-25.el7.noarch.rpm
ppc64: ntp-debuginfo-4.2.6p5-25.el7.ppc64.rpm sntp-4.2.6p5-25.el7.ppc64.rpm
ppc64le: ntp-debuginfo-4.2.6p5-25.el7.ppc64le.rpm sntp-4.2.6p5-25.el7.ppc64le.rpm
s390x: ntp-debuginfo-4.2.6p5-25.el7.s390x.rpm sntp-4.2.6p5-25.el7.s390x.rpm
x86_64: ntp-debuginfo-4.2.6p5-25.el7.x86_64.rpm sntp-4.2.6p5-25.el7.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source: ntp-4.2.6p5-25.el7.src.rpm
x86_64: ntp-4.2.6p5-25.el7.x86_64.rpm ntp-debuginfo-4.2.6p5-25.el7.x86_64.rpm ntpdate-4.2.6p5-25.el7.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
noarch: ntp-doc-4.2.6p5-25.el7.noarch.rpm ntp-perl-4.2.6p5-25.el7.noarch.rpm
x86_64: ntp-debuginfo-4.2.6p5-25.el7.x86_64.rpm sntp-4.2.6p5-25.el7.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-2015-5194 https://access.redhat.com/security/cve/CVE-2015-5195 https://access.redhat.com/security/cve/CVE-2015-5196 https://access.redhat.com/security/cve/CVE-2015-5219 https://access.redhat.com/security/cve/CVE-2015-7691 https://access.redhat.com/security/cve/CVE-2015-7692 https://access.redhat.com/security/cve/CVE-2015-7701 https://access.redhat.com/security/cve/CVE-2015-7702 https://access.redhat.com/security/cve/CVE-2015-7703 https://access.redhat.com/security/cve/CVE-2015-7852 https://access.redhat.com/security/cve/CVE-2015-7974 https://access.redhat.com/security/cve/CVE-2015-7977 https://access.redhat.com/security/cve/CVE-2015-7978 https://access.redhat.com/security/cve/CVE-2015-7979 https://access.redhat.com/security/cve/CVE-2015-8158 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/7.3_Release_Notes/index.html
- Contact:
The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/
Copyright 2016 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1
iD8DBQFYGvvBXlSAg2UNWIIRAhRGAJ44LtHkhexE/w50LEGifKeLUMXYkwCgmm/0 XqilrenZq9cyvtnH8eGxdCw= =XqfK -----END PGP SIGNATURE-----
-- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce .
CVE-2015-5300
It was found that ntpd did not correctly implement the -g option:
Normally, ntpd exits with a message to the system log if the offset
exceeds the panic threshold, which is 1000 s by default. This
option allows the time to be set to any value without restriction;
however, this can happen only once. If the threshold is exceeded
after that, ntpd will exit with a message to the system log. This
option can be used with the -q and -x options.
ntpd could actually step the clock multiple times by more than the
panic threshold if its clock discipline doesn't have enough time to
reach the sync state and stay there for at least one update. If a
man-in-the-middle attacker can control the NTP traffic since ntpd
was started (or maybe up to 15-30 minutes after that), they can
prevent the client from reaching the sync state and force it to step
its clock by any amount any number of times, which can be used by
attackers to expire certificates, etc.
This is contrary to what the documentation says. Normally, the
assumption is that an MITM attacker can step the clock more than the
panic threshold only once when ntpd starts and to make a larger
adjustment the attacker has to divide it into multiple smaller
steps, each taking 15 minutes, which is slow. For example:
ntpq -c ':config pidfile /tmp/ntp.pid'
ntpq -c ':config driftfile /tmp/ntp.drift'
In Debian ntpd is configured to drop root privileges, which limits
the impact of this issue.
CVE-2015-7704
If ntpd as an NTP client receives a Kiss-of-Death (KoD) packet
from the server to reduce its polling rate, it doesn't check if the
originate timestamp in the reply matches the transmit timestamp from
its request. An off-path attacker can send a crafted KoD packet to
the client, which will increase the client's polling interval to a
large value and effectively disable synchronization with the server.
CVE-2015-7850
An exploitable denial of service vulnerability exists in the remote
configuration functionality of the Network Time Protocol. A
specially crafted configuration file could cause an endless loop
resulting in a denial of service. An attacker could provide a the
malicious configuration file to trigger this vulnerability.
CVE-2015-7855
It was found that NTP's decodenetnum() would abort with an assertion
failure when processing a mode 6 or mode 7 packet containing an
unusually long data value where a network address was expected.
CVE-2015-7871
An error handling logic error exists within ntpd that manifests due
to improper error condition handling associated with certain
crypto-NAK packets. An unauthenticated, off-path attacker can force
ntpd processes on targeted servers to peer with time sources of the
attacker's choosing by transmitting symmetric active crypto-NAK
packets to ntpd. This attack bypasses the authentication typically
required to establish a peer association and allows an attacker to
make arbitrary changes to system time.
For the oldstable distribution (wheezy), these problems have been fixed in version 1:4.2.6.p5+dfsg-2+deb7u6.
For the stable distribution (jessie), these problems have been fixed in version 1:4.2.6.p5+dfsg-7+deb8u1.
For the testing distribution (stretch), these problems have been fixed in version 1:4.2.8p4+dfsg-3.
For the unstable distribution (sid), these problems have been fixed in version 1:4.2.8p4+dfsg-3.
We recommend that you upgrade your ntp packages.
Here are the details from the Slackware 14.1 ChangeLog: +--------------------------+ patches/packages/ntp-4.2.8p4-i486-1_slack14.1.txz: Upgraded. In addition to bug fixes and enhancements, this release fixes several low and medium severity vulnerabilities. For more information, see: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9750 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5196 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7691 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7692 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7701 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7702 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7704 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7705 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7848 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7849 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7850 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7851 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7852 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7853 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7854 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7855 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7871 ( 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-4.2.8p4-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-4.2.8p4-x86_64-1_slack13.0.txz
Updated package for Slackware 13.1: ftp://ftp.slackware.com/pub/slackware/slackware-13.1/patches/packages/ntp-4.2.8p4-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-4.2.8p4-x86_64-1_slack13.1.txz
Updated package for Slackware 13.37: ftp://ftp.slackware.com/pub/slackware/slackware-13.37/patches/packages/ntp-4.2.8p4-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-4.2.8p4-x86_64-1_slack13.37.txz
Updated package for Slackware 14.0: ftp://ftp.slackware.com/pub/slackware/slackware-14.0/patches/packages/ntp-4.2.8p4-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-4.2.8p4-x86_64-1_slack14.0.txz
Updated package for Slackware 14.1: ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/ntp-4.2.8p4-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-4.2.8p4-x86_64-1_slack14.1.txz
Updated package for Slackware -current: ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/ntp-4.2.8p4-i586-1.txz
Updated package for Slackware x86_64 -current: ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/ntp-4.2.8p4-x86_64-1.txz
MD5 signatures: +-------------+
Slackware 13.0 package: 21dd14178fea17a88c9326c8672ecefd ntp-4.2.8p4-i486-1_slack13.0.txz
Slackware x86_64 13.0 package: 8647479b2007b92ff8598184f2275263 ntp-4.2.8p4-x86_64-1_slack13.0.txz
Slackware 13.1 package: e0f122e8e271dc84db06202c03cc0288 ntp-4.2.8p4-i486-1_slack13.1.txz
Slackware x86_64 13.1 package: db0aff04b72b3d8c96ca8c8e1ed36c05 ntp-4.2.8p4-x86_64-1_slack13.1.txz
Slackware 13.37 package: 5914e43e886e5ff88fefd30083493e30 ntp-4.2.8p4-i486-1_slack13.37.txz
Slackware x86_64 13.37 package: 4335c3bf2ae24afc5ad734e8d80b3e94 ntp-4.2.8p4-x86_64-1_slack13.37.txz
Slackware 14.0 package: 39b05698797b638b67130e0b170e0a4b ntp-4.2.8p4-i486-1_slack14.0.txz
Slackware x86_64 14.0 package: dcf4a56ba1d013ee1c9d0e624e158709 ntp-4.2.8p4-x86_64-1_slack14.0.txz
Slackware 14.1 package: 1fd3a7beaf23303e2c211af377662614 ntp-4.2.8p4-i486-1_slack14.1.txz
Slackware x86_64 14.1 package: 438c3185aa8ec20d1c2b5e51786e4d41 ntp-4.2.8p4-x86_64-1_slack14.1.txz
Slackware -current package: 81bfb2fed450cb26a51b5e1cee0d33ed n/ntp-4.2.8p4-i586-1.txz
Slackware x86_64 -current package: 8bae4ad633af40d4d54b7686e4b225f9 n/ntp-4.2.8p4-x86_64-1.txz
Installation instructions: +------------------------+
Upgrade the package as root:
upgradepkg ntp-4.2.8p4-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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Show details on source website{
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"data": "The crypto_xmit function in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (crash). NOTE: This vulnerability exists due to an incomplete fix for CVE-2014-9750. 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. \nA remote attacker may exploit this issue to cause a denial-of-service condition, denying service to legitimate users. Due to the nature of this issue, code-injection may be possible; however this has not been confirmed. \nVersions prior to NTP 4.2.8p4 and 4.3.x prior to 4.3.77 are vulnerable. \nNote #2: This issue was previously titled \u0027NTP CVE-2015-7692 Denial of Service Vulnerability\u0027. The title has been changed to better reflect the vulnerability information. \n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\nGentoo Linux Security Advisory GLSA 201607-15\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n https://security.gentoo.org/\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n\n Severity: Normal\n Title: NTP: Multiple vulnerabilities\n Date: July 20, 2016\n Bugs: #563774, #572452, #581528, #584954\n ID: 201607-15\n\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n\nSynopsis\n========\n\nMultiple vulnerabilities have been found in NTP, the worst of which\ncould lead to Denial of Service. \n\nAffected packages\n=================\n\n -------------------------------------------------------------------\n Package / Vulnerable / Unaffected\n -------------------------------------------------------------------\n 1 net-misc/ntp \u003c 4.2.8_p8 \u003e= 4.2.8_p8\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_p8\"\n\nReferences\n==========\n\n[ 1 ] CVE-2015-7691\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7691\n[ 2 ] CVE-2015-7692\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7692\n[ 3 ] CVE-2015-7701\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7701\n[ 4 ] CVE-2015-7702\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7702\n[ 5 ] CVE-2015-7703\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7703\n[ 6 ] CVE-2015-7704\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7704\n[ 7 ] CVE-2015-7705\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7705\n[ 8 ] CVE-2015-7848\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7848\n[ 9 ] CVE-2015-7849\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7849\n[ 10 ] CVE-2015-7850\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7850\n[ 11 ] CVE-2015-7851\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7851\n[ 12 ] CVE-2015-7852\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7852\n[ 13 ] CVE-2015-7853\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7853\n[ 14 ] CVE-2015-7854\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7854\n[ 15 ] CVE-2015-7855\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7855\n[ 16 ] CVE-2015-7871\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7871\n[ 17 ] CVE-2015-7973\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7973\n[ 18 ] CVE-2015-7974\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7974\n[ 19 ] CVE-2015-7975\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7975\n[ 20 ] CVE-2015-7976\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7976\n[ 21 ] CVE-2015-7977\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7977\n[ 22 ] CVE-2015-7978\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7978\n[ 23 ] CVE-2015-7979\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7979\n[ 24 ] CVE-2015-8138\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8138\n[ 25 ] CVE-2015-8139\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8139\n[ 26 ] CVE-2015-8140\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8140\n[ 27 ] CVE-2015-8158\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8158\n[ 28 ] CVE-2016-1547\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1547\n[ 29 ] CVE-2016-1548\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1548\n[ 30 ] CVE-2016-1549\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1549\n[ 31 ] CVE-2016-1550\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1550\n[ 32 ] CVE-2016-1551\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1551\n[ 33 ] CVE-2016-2516\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2516\n[ 34 ] CVE-2016-2517\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2517\n[ 35 ] CVE-2016-2518\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2518\n[ 36 ] CVE-2016-2519\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2519\n[ 37 ] CVE-2016-4953\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4953\n[ 38 ] CVE-2016-4954\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4954\n[ 39 ] CVE-2016-4955\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4955\n[ 40 ] CVE-2016-4956\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4956\n[ 41 ] CVE-2016-4957\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4957\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/201607-15\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 2016 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\nhttp://creativecommons.org/licenses/by-sa/2.5\n\n\n. ============================================================================\nUbuntu Security Notice USN-2783-1\nOctober 27, 2015\n\nntp vulnerabilities\n============================================================================\n\nA security issue affects these releases of Ubuntu and its derivatives:\n\n- Ubuntu 15.10\n- Ubuntu 15.04\n- Ubuntu 14.04 LTS\n- Ubuntu 12.04 LTS\n\nSummary:\n\nSeveral security issues were fixed in NTP. (CVE-2015-5146)\n\nMiroslav Lichvar discovered that NTP incorrectly handled logconfig\ndirectives. (CVE-2015-5194)\n\nMiroslav Lichvar discovered that NTP incorrectly handled certain statistics\ntypes. (CVE-2015-5195)\n\nMiroslav Lichvar discovered that NTP incorrectly handled certain file\npaths. (CVE-2015-5196, CVE-2015-7703)\n\nMiroslav Lichvar discovered that NTP incorrectly handled certain packets. (CVE-2015-5219)\n\nAanchal Malhotra, Isaac E. Cohen, and Sharon Goldberg discovered that NTP\nincorrectly handled restarting after hitting a panic threshold. \n(CVE-2015-5300)\n\nIt was discovered that NTP incorrectly handled autokey data packets. \n(CVE-2015-7701)\n\nAanchal Malhotra, Isaac E. Cohen, and Sharon Goldberg discovered that NTP\nincorrectly handled rate limiting. (CVE-2015-7704,\nCVE-2015-7705)\n\nYves Younan discovered that NTP incorrectly handled logfile and keyfile\ndirectives. (CVE-2015-7850)\n\nYves Younan and Aleksander Nikolich discovered that NTP incorrectly handled\nascii conversion. (CVE-2015-7852)\n\nYves Younan discovered that NTP incorrectly handled reference clock memory. \n(CVE-2015-7853)\n\nJohn D \"Doug\" Birdwell discovered that NTP incorrectly handled decoding\ncertain bogus values. (CVE-2015-7871)\n\nIn the default installation, attackers would be isolated by the NTP\nAppArmor profile. \n\nUpdate instructions:\n\nThe problem can be corrected by updating your system to the following\npackage versions:\n\nUbuntu 15.10:\n ntp 1:4.2.6.p5+dfsg-3ubuntu8.1\n\nUbuntu 15.04:\n ntp 1:4.2.6.p5+dfsg-3ubuntu6.2\n\nUbuntu 14.04 LTS:\n ntp 1:4.2.6.p5+dfsg-3ubuntu2.14.04.5\n\nUbuntu 12.04 LTS:\n ntp 1:4.2.6.p3+dfsg-1ubuntu3.6\n\nIn general, a standard system update will make all the necessary changes. 6) - i386, noarch, x86_64\n\n3. \n\nOn October 21st, 2015, NTP.org released a security advisory detailing 13 issues regarding multiple DoS vulnerabilities, information disclosure vulnerabilities, and logic issues that may result in an attacker gaining the ability to modify an NTP server\u0027s advertised time. \n\nWorkarounds that mitigate one or more of the vulnerabilities may be available for certain products, please see the individual Cisco Bug IDs for details. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA1\n\n=====================================================================\n Red Hat Security Advisory\n\nSynopsis: Moderate: ntp security and bug fix update\nAdvisory ID: RHSA-2016:2583-02\nProduct: Red Hat Enterprise Linux\nAdvisory URL: https://rhn.redhat.com/errata/RHSA-2016-2583.html\nIssue date: 2016-11-03\nCVE Names: CVE-2015-5194 CVE-2015-5195 CVE-2015-5196 \n CVE-2015-5219 CVE-2015-7691 CVE-2015-7692 \n CVE-2015-7701 CVE-2015-7702 CVE-2015-7703 \n CVE-2015-7852 CVE-2015-7974 CVE-2015-7977 \n CVE-2015-7978 CVE-2015-7979 CVE-2015-8158 \n=====================================================================\n\n1. Summary:\n\nAn update for ntp is now available for Red Hat Enterprise Linux 7. \n\nRed Hat Product Security has rated this update as having a security impact\nof Moderate. A Common Vulnerability Scoring System (CVSS) base score, which\ngives a detailed severity rating, is available for each vulnerability from\nthe CVE link(s) in the References section. \n\n2. Relevant releases/architectures:\n\nRed Hat Enterprise Linux Client (v. 7) - x86_64\nRed Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64\nRed Hat Enterprise Linux ComputeNode (v. 7) - x86_64\nRed Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64\nRed Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64\nRed Hat Enterprise Linux Server Optional (v. 7) - aarch64, noarch, ppc64, ppc64le, s390x, x86_64\nRed Hat Enterprise Linux Workstation (v. 7) - x86_64\nRed Hat Enterprise Linux Workstation Optional (v. 7) - 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. These packages include the ntpd\nservice which continuously adjusts system time and utilities used to query\nand configure the ntpd service. \n\nSecurity Fix(es):\n\n* It was found that the fix for CVE-2014-9750 was incomplete: three issues\nwere found in the value length checks in NTP\u0027s ntp_crypto.c, where a packet\nwith particular autokey operations that contained malicious data was not\nalways being completely validated. (CVE-2015-7691, CVE-2015-7692,\nCVE-2015-7702)\n\n* A memory leak flaw was found in ntpd\u0027s CRYPTO_ASSOC. If ntpd was\nconfigured to use autokey authentication, an attacker could send packets to\nntpd that would, after several days of ongoing attack, cause it to run out\nof memory. (CVE-2015-7701)\n\n* An off-by-one flaw, leading to a buffer overflow, was found in\ncookedprint functionality of ntpq. (CVE-2015-7852)\n\n* A NULL pointer dereference flaw was found in the way ntpd processed\n\u0027ntpdc reslist\u0027 commands that queried restriction lists with a large amount\nof entries. (CVE-2015-7977)\n\n* A stack-based buffer overflow flaw was found in the way ntpd processed\n\u0027ntpdc reslist\u0027 commands that queried restriction lists with a large amount\nof entries. \n(CVE-2015-7978)\n\n* It was found that when NTP was configured in broadcast mode, a remote\nattacker could broadcast packets with bad authentication to all clients. \nThe clients, upon receiving the malformed packets, would break the\nassociation with the broadcast server, causing them to become out of sync\nover a longer period of time. (CVE-2015-7979)\n\n* It was found that ntpd could crash due to an uninitialized variable when\nprocessing malformed logconfig configuration commands. (CVE-2015-5194)\n\n* It was found that ntpd would exit with a segmentation fault when a\nstatistics type that was not enabled during compilation (e.g. timingstats)\nwas referenced by the statistics or filegen configuration command. \n(CVE-2015-5195)\n\n* It was found that NTP\u0027s :config command could be used to set the pidfile\nand driftfile paths without any restrictions. A remote attacker could use\nthis flaw to overwrite a file on the file system with a file containing the\npid of the ntpd process (immediately) or the current estimated drift of the\nsystem clock (in hourly intervals). (CVE-2015-5196, CVE-2015-7703)\n\n* It was discovered that the sntp utility could become unresponsive due to\nbeing caught in an infinite loop when processing a crafted NTP packet. \n(CVE-2015-5219)\n\n* A flaw was found in the way NTP verified trusted keys during symmetric\nkey authentication. An authenticated client (A) could use this flaw to\nmodify a packet sent between a server (B) and a client (C) using a key that\nis different from the one known to the client (A). (CVE-2015-7974)\n\n* A flaw was found in the way the ntpq client processed certain incoming\npackets in a loop in the getresponse() function. A remote attacker could\npotentially use this flaw to crash an ntpq client instance. (CVE-2015-8158)\n\nThe CVE-2015-5219 and CVE-2015-7703 issues were discovered by Miroslav\nLichvA!r (Red Hat). \n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat\nEnterprise Linux 7.3 Release Notes linked from the References section. \n\n4. Solution:\n\nFor details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nAfter installing this update, the ntpd daemon will restart automatically. \n\n5. Bugs fixed (https://bugzilla.redhat.com/):\n\n1242553 - ntpd doesn\u0027t reset system leap status when disarming leap timer\n1254542 - CVE-2015-5194 ntp: crash with crafted logconfig configuration command\n1254544 - CVE-2015-5195 ntp: ntpd crash when processing config commands with statistics type\n1254547 - CVE-2015-7703 ntp: config command can be used to set the pidfile and drift file paths\n1255118 - CVE-2015-5219 ntp: infinite loop in sntp processing crafted packet\n1274254 - CVE-2015-7691 CVE-2015-7692 CVE-2015-7702 ntp: incomplete checks in ntp_crypto.c\n1274255 - CVE-2015-7701 ntp: slow memory leak in CRYPTO_ASSOC\n1274261 - CVE-2015-7852 ntp: ntpq atoascii memory corruption vulnerability\n1297471 - CVE-2015-7974 ntp: missing key check allows impersonation between authenticated peers (VU#357792)\n1300269 - CVE-2015-7977 ntp: restriction list NULL pointer dereference\n1300270 - CVE-2015-7978 ntp: stack exhaustion in recursive traversal of restriction list\n1300271 - CVE-2015-7979 ntp: off-path denial of service on authenticated broadcast mode\n1300273 - CVE-2015-8158 ntp: potential infinite loop in ntpq\n\n6. Package List:\n\nRed Hat Enterprise Linux Client (v. 7):\n\nSource:\nntp-4.2.6p5-25.el7.src.rpm\n\nx86_64:\nntp-4.2.6p5-25.el7.x86_64.rpm\nntp-debuginfo-4.2.6p5-25.el7.x86_64.rpm\nntpdate-4.2.6p5-25.el7.x86_64.rpm\n\nRed Hat Enterprise Linux Client Optional (v. 7):\n\nnoarch:\nntp-doc-4.2.6p5-25.el7.noarch.rpm\nntp-perl-4.2.6p5-25.el7.noarch.rpm\n\nx86_64:\nntp-debuginfo-4.2.6p5-25.el7.x86_64.rpm\nsntp-4.2.6p5-25.el7.x86_64.rpm\n\nRed Hat Enterprise Linux ComputeNode (v. 7):\n\nSource:\nntp-4.2.6p5-25.el7.src.rpm\n\nx86_64:\nntp-4.2.6p5-25.el7.x86_64.rpm\nntp-debuginfo-4.2.6p5-25.el7.x86_64.rpm\nntpdate-4.2.6p5-25.el7.x86_64.rpm\n\nRed Hat Enterprise Linux ComputeNode Optional (v. 7):\n\nnoarch:\nntp-doc-4.2.6p5-25.el7.noarch.rpm\nntp-perl-4.2.6p5-25.el7.noarch.rpm\n\nx86_64:\nntp-debuginfo-4.2.6p5-25.el7.x86_64.rpm\nsntp-4.2.6p5-25.el7.x86_64.rpm\n\nRed Hat Enterprise Linux Server (v. 7):\n\nSource:\nntp-4.2.6p5-25.el7.src.rpm\n\naarch64:\nntp-4.2.6p5-25.el7.aarch64.rpm\nntp-debuginfo-4.2.6p5-25.el7.aarch64.rpm\nntpdate-4.2.6p5-25.el7.aarch64.rpm\n\nppc64:\nntp-4.2.6p5-25.el7.ppc64.rpm\nntp-debuginfo-4.2.6p5-25.el7.ppc64.rpm\nntpdate-4.2.6p5-25.el7.ppc64.rpm\n\nppc64le:\nntp-4.2.6p5-25.el7.ppc64le.rpm\nntp-debuginfo-4.2.6p5-25.el7.ppc64le.rpm\nntpdate-4.2.6p5-25.el7.ppc64le.rpm\n\ns390x:\nntp-4.2.6p5-25.el7.s390x.rpm\nntp-debuginfo-4.2.6p5-25.el7.s390x.rpm\nntpdate-4.2.6p5-25.el7.s390x.rpm\n\nx86_64:\nntp-4.2.6p5-25.el7.x86_64.rpm\nntp-debuginfo-4.2.6p5-25.el7.x86_64.rpm\nntpdate-4.2.6p5-25.el7.x86_64.rpm\n\nRed Hat Enterprise Linux Server Optional (v. 7):\n\naarch64:\nntp-debuginfo-4.2.6p5-25.el7.aarch64.rpm\nsntp-4.2.6p5-25.el7.aarch64.rpm\n\nnoarch:\nntp-doc-4.2.6p5-25.el7.noarch.rpm\nntp-perl-4.2.6p5-25.el7.noarch.rpm\n\nppc64:\nntp-debuginfo-4.2.6p5-25.el7.ppc64.rpm\nsntp-4.2.6p5-25.el7.ppc64.rpm\n\nppc64le:\nntp-debuginfo-4.2.6p5-25.el7.ppc64le.rpm\nsntp-4.2.6p5-25.el7.ppc64le.rpm\n\ns390x:\nntp-debuginfo-4.2.6p5-25.el7.s390x.rpm\nsntp-4.2.6p5-25.el7.s390x.rpm\n\nx86_64:\nntp-debuginfo-4.2.6p5-25.el7.x86_64.rpm\nsntp-4.2.6p5-25.el7.x86_64.rpm\n\nRed Hat Enterprise Linux Workstation (v. 7):\n\nSource:\nntp-4.2.6p5-25.el7.src.rpm\n\nx86_64:\nntp-4.2.6p5-25.el7.x86_64.rpm\nntp-debuginfo-4.2.6p5-25.el7.x86_64.rpm\nntpdate-4.2.6p5-25.el7.x86_64.rpm\n\nRed Hat Enterprise Linux Workstation Optional (v. 7):\n\nnoarch:\nntp-doc-4.2.6p5-25.el7.noarch.rpm\nntp-perl-4.2.6p5-25.el7.noarch.rpm\n\nx86_64:\nntp-debuginfo-4.2.6p5-25.el7.x86_64.rpm\nsntp-4.2.6p5-25.el7.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-2015-5194\nhttps://access.redhat.com/security/cve/CVE-2015-5195\nhttps://access.redhat.com/security/cve/CVE-2015-5196\nhttps://access.redhat.com/security/cve/CVE-2015-5219\nhttps://access.redhat.com/security/cve/CVE-2015-7691\nhttps://access.redhat.com/security/cve/CVE-2015-7692\nhttps://access.redhat.com/security/cve/CVE-2015-7701\nhttps://access.redhat.com/security/cve/CVE-2015-7702\nhttps://access.redhat.com/security/cve/CVE-2015-7703\nhttps://access.redhat.com/security/cve/CVE-2015-7852\nhttps://access.redhat.com/security/cve/CVE-2015-7974\nhttps://access.redhat.com/security/cve/CVE-2015-7977\nhttps://access.redhat.com/security/cve/CVE-2015-7978\nhttps://access.redhat.com/security/cve/CVE-2015-7979\nhttps://access.redhat.com/security/cve/CVE-2015-8158\nhttps://access.redhat.com/security/updates/classification/#moderate\nhttps://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/7.3_Release_Notes/index.html\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 2016 Red Hat, Inc. \n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1\n\niD8DBQFYGvvBXlSAg2UNWIIRAhRGAJ44LtHkhexE/w50LEGifKeLUMXYkwCgmm/0\nXqilrenZq9cyvtnH8eGxdCw=\n=XqfK\n-----END PGP SIGNATURE-----\n\n\n--\nRHSA-announce mailing list\nRHSA-announce@redhat.com\nhttps://www.redhat.com/mailman/listinfo/rhsa-announce\n. \n\nCVE-2015-5300\n\n It was found that ntpd did not correctly implement the -g option:\n\n Normally, ntpd exits with a message to the system log if the offset\n exceeds the panic threshold, which is 1000 s by default. This\n option allows the time to be set to any value without restriction;\n however, this can happen only once. If the threshold is exceeded\n after that, ntpd will exit with a message to the system log. This\n option can be used with the -q and -x options. \n\n ntpd could actually step the clock multiple times by more than the\n panic threshold if its clock discipline doesn\u0027t have enough time to\n reach the sync state and stay there for at least one update. If a\n man-in-the-middle attacker can control the NTP traffic since ntpd\n was started (or maybe up to 15-30 minutes after that), they can\n prevent the client from reaching the sync state and force it to step\n its clock by any amount any number of times, which can be used by\n attackers to expire certificates, etc. \n\n This is contrary to what the documentation says. Normally, the\n assumption is that an MITM attacker can step the clock more than the\n panic threshold only once when ntpd starts and to make a larger\n adjustment the attacker has to divide it into multiple smaller\n steps, each taking 15 minutes, which is slow. For example:\n\n ntpq -c \u0027:config pidfile /tmp/ntp.pid\u0027\n ntpq -c \u0027:config driftfile /tmp/ntp.drift\u0027\n\n In Debian ntpd is configured to drop root privileges, which limits\n the impact of this issue. \n\nCVE-2015-7704\n\n If ntpd as an NTP client receives a Kiss-of-Death (KoD) packet\n from the server to reduce its polling rate, it doesn\u0027t check if the\n originate timestamp in the reply matches the transmit timestamp from\n its request. An off-path attacker can send a crafted KoD packet to\n the client, which will increase the client\u0027s polling interval to a\n large value and effectively disable synchronization with the server. \n\nCVE-2015-7850\n\n An exploitable denial of service vulnerability exists in the remote\n configuration functionality of the Network Time Protocol. A\n specially crafted configuration file could cause an endless loop\n resulting in a denial of service. An attacker could provide a the\n malicious configuration file to trigger this vulnerability. \n\nCVE-2015-7855\n\n It was found that NTP\u0027s decodenetnum() would abort with an assertion\n failure when processing a mode 6 or mode 7 packet containing an\n unusually long data value where a network address was expected. \n\nCVE-2015-7871\n\n An error handling logic error exists within ntpd that manifests due\n to improper error condition handling associated with certain\n crypto-NAK packets. An unauthenticated, off-path attacker can force\n ntpd processes on targeted servers to peer with time sources of the\n attacker\u0027s choosing by transmitting symmetric active crypto-NAK\n packets to ntpd. This attack bypasses the authentication typically\n required to establish a peer association and allows an attacker to\n make arbitrary changes to system time. \n\nFor the oldstable distribution (wheezy), these problems have been fixed\nin version 1:4.2.6.p5+dfsg-2+deb7u6. \n\nFor the stable distribution (jessie), these problems have been fixed in\nversion 1:4.2.6.p5+dfsg-7+deb8u1. \n\nFor the testing distribution (stretch), these problems have been fixed\nin version 1:4.2.8p4+dfsg-3. \n\nFor the unstable distribution (sid), these problems have been fixed in\nversion 1:4.2.8p4+dfsg-3. \n\nWe recommend that you upgrade your ntp packages. \n\n\nHere are the details from the Slackware 14.1 ChangeLog:\n+--------------------------+\npatches/packages/ntp-4.2.8p4-i486-1_slack14.1.txz: Upgraded. \n In addition to bug fixes and enhancements, this release fixes\n several low and medium severity vulnerabilities. \n For more information, see:\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9750\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5196\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7691\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7692\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7701\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7702\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7704\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7705\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7848\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7849\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7850\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7851\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7852\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7853\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7854\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7855\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7871\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-4.2.8p4-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-4.2.8p4-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-4.2.8p4-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-4.2.8p4-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-4.2.8p4-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-4.2.8p4-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-4.2.8p4-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-4.2.8p4-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-4.2.8p4-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-4.2.8p4-x86_64-1_slack14.1.txz\n\nUpdated package for Slackware -current:\nftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/ntp-4.2.8p4-i586-1.txz\n\nUpdated package for Slackware x86_64 -current:\nftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/ntp-4.2.8p4-x86_64-1.txz\n\n\nMD5 signatures:\n+-------------+\n\nSlackware 13.0 package:\n21dd14178fea17a88c9326c8672ecefd ntp-4.2.8p4-i486-1_slack13.0.txz\n\nSlackware x86_64 13.0 package:\n8647479b2007b92ff8598184f2275263 ntp-4.2.8p4-x86_64-1_slack13.0.txz\n\nSlackware 13.1 package:\ne0f122e8e271dc84db06202c03cc0288 ntp-4.2.8p4-i486-1_slack13.1.txz\n\nSlackware x86_64 13.1 package:\ndb0aff04b72b3d8c96ca8c8e1ed36c05 ntp-4.2.8p4-x86_64-1_slack13.1.txz\n\nSlackware 13.37 package:\n5914e43e886e5ff88fefd30083493e30 ntp-4.2.8p4-i486-1_slack13.37.txz\n\nSlackware x86_64 13.37 package:\n4335c3bf2ae24afc5ad734e8d80b3e94 ntp-4.2.8p4-x86_64-1_slack13.37.txz\n\nSlackware 14.0 package:\n39b05698797b638b67130e0b170e0a4b ntp-4.2.8p4-i486-1_slack14.0.txz\n\nSlackware x86_64 14.0 package:\ndcf4a56ba1d013ee1c9d0e624e158709 ntp-4.2.8p4-x86_64-1_slack14.0.txz\n\nSlackware 14.1 package:\n1fd3a7beaf23303e2c211af377662614 ntp-4.2.8p4-i486-1_slack14.1.txz\n\nSlackware x86_64 14.1 package:\n438c3185aa8ec20d1c2b5e51786e4d41 ntp-4.2.8p4-x86_64-1_slack14.1.txz\n\nSlackware -current package:\n81bfb2fed450cb26a51b5e1cee0d33ed n/ntp-4.2.8p4-i586-1.txz\n\nSlackware x86_64 -current package:\n8bae4ad633af40d4d54b7686e4b225f9 n/ntp-4.2.8p4-x86_64-1.txz\n\n\nInstallation instructions:\n+------------------------+\n\nUpgrade the package as root:\n# upgradepkg ntp-4.2.8p4-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. 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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.