CVE-2016-7429
published 2017-01-13CVE-2016-7429: NTP before 4.2.8p9 changes the peer structure to the interface it receives the response from a source, which allows remote attackers to cause a denial of…
PriorityP419low3.7CVSS 3.0
AVNACHPRNUINSUCNINAL
EPSS
7.42%
93.8th percentile
NTP before 4.2.8p9 changes the peer structure to the interface it receives the response from a source, which allows remote attackers to cause a denial of service (prevent communication with a source) by sending a response for a source to an interface the source does not use.
Affected
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | ntp | < ntp 1:4.2.8p9+dfsg-1 (bullseye) | ntp 1:4.2.8p9+dfsg-1 (bullseye) |
| ntp | ntp | <= 4.2.8 | — |
| ntp | ntp | >= 0 < 1:4.2.8p9+dfsg-1 | 1:4.2.8p9+dfsg-1 |
| ntp | ntp | >= 0 < 1:4.2.6.p5+dfsg-3ubuntu2.14.04.11 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.11 |
| ntp | ntp | >= 0 < 1:4.2.8p4+dfsg-3ubuntu5.5 | 1:4.2.8p4+dfsg-3ubuntu5.5 |
CVSS provenance
nvdv3.03.7LOWCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P
osv5.9MEDIUM
vendor_ubuntu5.9MEDIUM
vendor_cisco5.3MEDIUM
vendor_debian3.7LOW
vendor_redhat3.7LOW
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GHSA
GHSA-9h42-3m2m-9456: NTP before 4
ghsa_unreviewed·2022-05-14
CVE-2016-7429 [MEDIUM] GHSA-9h42-3m2m-9456: NTP before 4
NTP before 4.2.8p9 changes the peer structure to the interface it receives the response from a source, which allows remote attackers to cause a denial of service (prevent communication with a source) by sending a response for a source to an interface the source does not use.
OSV
ntp vulnerabilities
osv·2017-07-05·CVSS 5.9
CVE-2016-2519 [MEDIUM] ntp vulnerabilities
ntp vulnerabilities
Yihan Lian discovered that NTP incorrectly handled certain large request
data values. A remote attacker could possibly use this issue to cause NTP
to crash, resulting in a denial of service. This issue only affected
Ubuntu 16.04 LTS. (CVE-2016-2519)
Miroslav Lichvar discovered that NTP incorrectly handled certain spoofed
addresses when performing rate limiting. A remote attacker could possibly
use this issue to perform a denial of service. This issue only affected
Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 16.10. (CVE-2016-7426)
Matthew Van Gundy discovered that NTP incorrectly handled certain crafted
broadcast mode packets. A remote attacker could possibly use this issue to
perform a denial of service. This issue only affected Ubuntu 14.04 LTS,
Ubuntu 16.04 LTS,
OSV
CVE-2016-7429: NTP before 4
osv·2017-01-13·CVSS 3.7
CVE-2016-7429 [LOW] CVE-2016-7429: NTP before 4
NTP before 4.2.8p9 changes the peer structure to the interface it receives the response from a source, which allows remote attackers to cause a denial of service (prevent communication with a source) by sending a response for a source to an interface the source does not use.
Ubuntu
NTP vulnerabilities
vendor_ubuntu·2017-07-05·CVSS 5.9
CVE-2016-2519 [MEDIUM] NTP vulnerabilities
Title: NTP vulnerabilities
Summary: Several security issues were fixed in NTP.
Yihan Lian discovered that NTP incorrectly handled certain large request
data values. A remote attacker could possibly use this issue to cause NTP
to crash, resulting in a denial of service. This issue only affected
Ubuntu 16.04 LTS. (CVE-2016-2519)
Miroslav Lichvar discovered that NTP incorrectly handled certain spoofed
addresses when performing rate limiting. A remote attacker could possibly
use this issue to perform a denial of service. This issue only affected
Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 16.10. (CVE-2016-7426)
Matthew Van Gundy discovered that NTP incorrectly handled certain crafted
broadcast mode packets. A remote attacker could possibly use this issue to
perform a denial of service.
Cisco
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: November 2016
vendor_cisco·2016-11-23·CVSS 5.3
CVE-2015-8138 [MEDIUM] CWE-119 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: November 2016
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: November 2016
Multiple Cisco products incorporate a version of the Network Time Protocol daemon (ntpd) package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or modify the time being advertised by a device acting as a Network Time Protocol (NTP) server.
On November 21, 2016, the NTP Consortium of the Network Time Foundation released a security notice that details ten issues regarding DoS vulnerabilities and logic issues that may allow an attacker to shift a system's time.
The new vulnerabilities disclosed in this document are as follows:
Network Time Protocol Trap Service Denial of S
Red Hat
ntp: Attack on interface selection
vendor_redhat·2016-11-21·CVSS 3.7
CVE-2016-7429 [LOW] ntp: Attack on interface selection
ntp: Attack on interface selection
NTP before 4.2.8p9 changes the peer structure to the interface it receives the response from a source, which allows remote attackers to cause a denial of service (prevent communication with a source) by sending a response for a source to an interface the source does not use.
A flaw was found in the way ntpd running on a host with multiple network interfaces handled certain server responses. A remote attacker could use this flaw which would cause ntpd to not synchronize with the source.
Mitigation: If you are going to configure your OS to disable source address checks, also configure your firewall configuration to control what interfaces can receive packets from what networks.
Package: ntp (Red Hat Enterprise Linux 5) - Will not fix
Debian
CVE-2016-7429: ntp - NTP before 4.2.8p9 changes the peer structure to the interface it receives the r...
vendor_debian·2016·CVSS 3.7
CVE-2016-7429 [LOW] CVE-2016-7429: ntp - NTP before 4.2.8p9 changes the peer structure to the interface it receives the r...
NTP before 4.2.8p9 changes the peer structure to the interface it receives the response from a source, which allows remote attackers to cause a denial of service (prevent communication with a source) by sending a response for a source to an interface the source does not use.
Scope: local
bullseye: resolved (fixed in 1:4.2.8p9+dfsg-1)
Cisco
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: November 2016
vendor_cisco
CVE-2016-7429 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: November 2016
CVE-2016-7429: Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: November 2016
Multiple Cisco products incorporate a version of the Network Time Protocol daemon (ntpd) package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or modify the time being advertised by a device acting as a Network Time Protocol (NTP) server. On November 21, 2016, the NTP Consortium of the Network Time Foundation released a security notice that
CWE: CWE-119, CWE-20, CWE-399, CWE-119, CWE-20, CWE-399
Bug IDs: CSCvc22942, CSCvc23435, CSCvc23437, CSCvc22942, CSCvc23435
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2016-7426 CVE-2016-7429 CVE-2016-7433 CVE-2016-9310 CVE-2016-9311 ntp: various flaws [fedora-all]
bugzilla·2016-11-22·CVSS 7.5
CVE-2016-7426 [HIGH] CVE-2016-7426 CVE-2016-7429 CVE-2016-7433 CVE-2016-9310 CVE-2016-9311 ntp: various flaws [fedora-all]
CVE-2016-7426 CVE-2016-7429 CVE-2016-7433 CVE-2016-9310 CVE-2016-9311 ntp: various flaws [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multipl
Bugzilla
CVE-2016-7429 ntp: Attack on interface selection
bugzilla·2016-11-22·CVSS 3.7
CVE-2016-7429 [LOW] CVE-2016-7429 ntp: Attack on interface selection
CVE-2016-7429 ntp: Attack on interface selection
When ntpd receives a server response on a socket that corresponds to a different interface than was used for the request, the peer structure is updated to use the interface for new requests. If ntpd is running on a host with multiple interfaces in separate networks and the operating system doesn't check source address in received packets (e.g. rp_filter on Linux is set to 0), an attacker that knows the address of the source can send a packet with spoofed source address which will cause ntpd to select wrong interface for the source and prevent it from sending new requests until the list of interfaces is refreshed, which happens on routing changes or every 5 minutes by default. If the attack is repeated often enough (once per second), ntpd wi
http://nwtime.org/ntp428p9_release/http://rhn.redhat.com/errata/RHSA-2017-0252.htmlhttp://support.ntp.org/bin/view/Main/NtpBug3072http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilitieshttp://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.htmlhttp://www.securityfocus.com/bid/94453http://www.securitytracker.com/id/1037354https://bto.bluecoat.com/security-advisory/sa139https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_ushttps://www.kb.cert.org/vuls/id/633847http://nwtime.org/ntp428p9_release/http://rhn.redhat.com/errata/RHSA-2017-0252.htmlhttp://support.ntp.org/bin/view/Main/NtpBug3072http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilitieshttp://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.htmlhttp://www.securityfocus.com/bid/94453http://www.securitytracker.com/id/1037354https://bto.bluecoat.com/security-advisory/sa139https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_ushttps://www.kb.cert.org/vuls/id/633847
2017-01-13
Published