CVE-2014-9751

ntp: drop packets with source address ::1

Severity Score

6.8

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The read_network_packet function in ntp_io.c in ntpd in NTP 4.x before 4.2.8p1 on Linux and OS X does not properly determine whether a source IP address is an IPv6 loopback address, which makes it easier for remote attackers to spoof restricted packets, and read or write to the runtime state, by leveraging the ability to reach the ntpd machine's network interface with a packet from the ::1 address.

La función read_network_packet en ntp_io.c en ntpd en NTP 4.x en versiones anteriores a 4.2.8p1 en Linux y OS X no determina correctamente si una dirección IP fuente es una dirección IPv6 loopback, lo que facilita a atacantes remotos suplantar paquetes restringidos y leer o escribir en el estado runtime, aprovechando la habilidad para alcanzar la interfaz de red de la máquina ntpd con un paquete proveniente de la dirección ::1.

It was found that because NTP's access control was based on a source IP address, an attacker could bypass source IP restrictions and send malicious control and configuration packets by spoofing ::1 addresses.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-10-04 CVE Reserved
2015-10-04 CVE Published
2023-07-27 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (10)

URL	Tag	Source
http://www.kb.cert.org/vuls/id/852879	Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html	Third Party Advisory
http://www.securityfocus.com/bid/72584	Third Party Advisory
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03886en_us	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
http://bugs.ntp.org/show_bug.cgi?id=2672	2021-09-08

URL	Date	SRC
http://rhn.redhat.com/errata/RHSA-2015-1459.html	2021-09-08
http://support.ntp.org/bin/view/Main/SecurityNotice#December_2014_NTP_Security_Vulne	2021-09-08
http://www.debian.org/security/2015/dsa-3388	2021-09-08
https://bugzilla.redhat.com/show_bug.cgi?id=1184572	2015-11-19
https://access.redhat.com/security/cve/CVE-2014-9751	2015-11-19

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Ntp Search vendor "Ntp"	Ntp Search vendor "Ntp" for product "Ntp"	>= 4.2.0 < 4.2.8 Search vendor "Ntp" for product "Ntp" and version " >= 4.2.0 < 4.2.8"	-	Affected	in	Apple Search vendor "Apple"	Macos Search vendor "Apple" for product "Macos"	-	-	Safe
Ntp Search vendor "Ntp"	Ntp Search vendor "Ntp" for product "Ntp"	>= 4.2.0 < 4.2.8 Search vendor "Ntp" for product "Ntp" and version " >= 4.2.0 < 4.2.8"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	-	-	Safe
Ntp Search vendor "Ntp"	Ntp Search vendor "Ntp" for product "Ntp"	4.2.8 Search vendor "Ntp" for product "Ntp" and version "4.2.8"	-	Affected	in	Apple Search vendor "Apple"	Macos Search vendor "Apple" for product "Macos"	-	-	Safe
Ntp Search vendor "Ntp"	Ntp Search vendor "Ntp" for product "Ntp"	4.2.8 Search vendor "Ntp" for product "Ntp" and version "4.2.8"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	-	-	Safe
Redhat Search vendor "Redhat"		Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop"				6.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				6.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				6.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "6.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Oracle Search vendor "Oracle"		Linux Search vendor "Oracle" for product "Linux"				7 Search vendor "Oracle" for product "Linux" and version "7"		-		Affected